U.S. patent application number 12/749562 was filed with the patent office on 2010-07-22 for handheld spray receptor.
Invention is credited to Barry Porter.
Application Number | 20100181347 12/749562 |
Document ID | / |
Family ID | 42336128 |
Filed Date | 2010-07-22 |
United States Patent
Application |
20100181347 |
Kind Code |
A1 |
Porter; Barry |
July 22, 2010 |
HANDHELD SPRAY RECEPTOR
Abstract
The handheld spray receptor provides an apparatus which, when
used with a supply of a liquid under pressure, dispenses a liquid
material in a pattern that is controlled by an inexpensive and
disposable actuator. Such actuators are employed as an industry
standard part that would be found on any aerosol spray can, and
feature small cylindrical actuators that may be easily
interchanged, so as to provide varied spray patterns. A purging
model provides for a quick and convenient method of purging liquid
from the actuator, so as to prevent hardening of liquid material
exposed to the atmosphere, and a subsequent clogging of the
receptor. When used with a supply of liquid under pressure and
access to a propellant, the handheld spray receptor significantly
reduces the amount of hazardous waste, in the form of partially
consumed aerosol cans, that would otherwise enter landfills or
hazardous waste recycling facilities.
Inventors: |
Porter; Barry; (Bridgewater,
MA) |
Correspondence
Address: |
BANNER & WITCOFF, LTD.
28 STATE STREET, SUITE 1800
BOSTON
MA
02109-1701
US
|
Family ID: |
42336128 |
Appl. No.: |
12/749562 |
Filed: |
March 30, 2010 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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10179088 |
Jun 25, 2002 |
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12749562 |
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Current U.S.
Class: |
222/402.18 |
Current CPC
Class: |
B65D 83/202 20130101;
B05B 7/2427 20130101 |
Class at
Publication: |
222/402.18 |
International
Class: |
B65D 83/16 20060101
B65D083/16 |
Claims
1. A handheld receptor consisting of a cylindrical receptor body
with a threaded upper end, a commercially available vertical action
valve assembly, and a valve locking ring, said valve locking ring
threaded to mate with said threaded upper end of said receptor
body, and having an opening through which said vertical action
valve may extend, configured so that when said valve locking ring
is tightened to said threaded upper end of said receptor body, said
vertical action valve is seated firmly to said receptor body, said
receptor body configured to receive said vertical action valve into
a chamber that is configured to receive said vertical action valve
with a minimum of space and volume between said vertical action
valve and said receptor body, said receptor body having a bore
through the center of said cylindrical receptor body from the top
to the bottom flat surface, through which a liquid material may be
supplied under pressure and dispensed by an operator, through the
activation of an actuator on said vertical action valve
assembly.
2. (canceled)
3. A handheld receptor as in claim 1, wherein an insert is placed
between said vertical action valve and said valve locking ring, (a)
said insert having a cylindrical portion configured to fit snugly
within the well of said vertical actuator valve and having an outer
lip and an inner lip, (b) said outer lip extending outward from
said cylindrical portion and resting on the top cylindrical surface
of said vertical action valve so as to secure said insert on top of
said vertical action valve, (c) said inner lip extending inward so
as to form a lip suitable for attaching a spray nozzle assembly,
said inner lip and said outer lip presenting a flat surface when
viewed from above, (d) said inner lip defining a circular opening
modified by two extended edges which define two straight opposing
edges, said straight edges providing a front and back edge for
securing said spray nozzle assembly securely to said handheld
receptor, (e) said spray nozzle assembly attaching to said handheld
receptor by inserting said spray nozzle assembly into the elongated
opening defined by said insert, and thereafter rotating said spray
nozzle assembly one quarter turn, so that the front and back edges
of said spray nozzle assembly grip to the lips defined by the
straight edges of said insert.
4. A handheld receptor as in claim 1, wherein an insert is placed
between said vertical action valve and said valve locking ring, (a)
said insert having a flat upper and lower surface, parallel to one
another, and a circular outer edge, of a diameter which fits snugly
within said valve locking ring, said insert having an inner opening
consisting of two circular edges of a diameter that is slightly
larger than that of the crimped edge of an aerosol can, said
circular edges being opposite of one another and each occupying
approximately ninety degrees of said opening, (b) said insert
having two straight edges connecting said circular edges one to
another, providing a narrower opening suitable for gripping by an
external pistol grip assembly, when said pistol grip assembly is
inserted parallel to said straight edges and thereafter twisted
ninety degrees.
5. A handheld receptor as in claim 1, wherein said receptor body is
comprised of machined aluminum, machined brass, or injection molded
plastic materials, said injected molded part being molded in two
parts and thereafter assembled.
6. (canceled)
7. (canceled)
8. A handheld receptor as in claim 1, for which a tubing connector
assembly is threaded and inserted in the bottom of said handheld
receptor body, in a female threaded seat configured to provide a
tight and leakproof seat, configured to provide a tight mechanical
coupling to an inlet tube that supplies liquid material to be
dispensed.
9. (canceled)
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a divisional application from
application Ser. No. 10/179,088 filed 25 Jun. 2002, now U.S. Pat.
No. x,xxx,xxx, the disclosure of which is hereby incorporated
herein by reference.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The handheld spray receptor provides an alternative method
of dispensing liquids under pressure, as might be alternatively
accomplished with an aerosol container, or a traditional spray gun.
Traditional aerosol cans often dispense hazardous materials, and
when the actuator or vertical valve on an aerosol can becomes
clogged, the entire can becomes useless, and is often discarded
improperly, creating a hazard. Cleaning out the actuator and
vertical valve of an aerosol can is difficult and often
ineffective. A purging capability can be approximated with an
aerosol can, but requires expensive equipment specially designed,
in most instances.
[0004] 2. Description of Prior Art
[0005] The most traditional method of selling and dispensing liquid
materials is by way of the traditional aerosol can. The propellant
utilized in traditional aerosol cans is often hostile to living
beings, and as such provides a hazard to the user of the aerosol
can, as well as a pollutant to the environment as a whole. Aerosol
cans also provide poor economy for viscous liquids. Viscous liquids
must be thinned with a material which is often detrimental to the
user and the environment, such as paint thinner or methyl alcohol.
It is not uncommon for a consumer to receive an aerosol product
with 90% thinner, and 10% product, making the aerosol can an
expensive method of delivering product. An aerosol can may purge
the material in the feed tube and actuator button, by holding the
can upside down and depressing the actuator button, but this can
cause the propellant to become exhausted, rendering the aerosol can
useless, even though there may be additional liquid still in the
can. In addition, the actuator button often becomes clogged,
causing the remaining liquid to be unusable. Aerosol cans create a
major disposal problem, when they become empty, and are hazardous
materials that must be properly handled to be safely disposed
of.
[0006] A variant of the traditional aerosol can is the aerosol
powered foam container, as might be used to dispense shaving cream.
These cans typically utilize an actuator that is crimped to the
mouth of the can, accompanied by a slot or other large flow opening
which releases the material rather than spraying it. U.S. Pat. No.
5,027,986 provides an example of this kind of application. Other
mechanisms utilize an extension tube and a piston effect to
dispense liquid in a flow, not a spray. U.S. Pat. No. 3,346,194
provides an example of this kind of dispenser.
[0007] Lawn and garden sprayers have been developed which dispense
liquid materials under pressure. These are often provided with a
compression pump, allowing the operator to pressurize the liquid in
the tank, and to release fertilizer, herbicides, or pesticides (or
any other liquid that might be useful in gardening) by means of a
trigger mechanism. U.S. Pat. No. 5,307,995 discloses an enhanced
method of attaching a hose to such a sprayer. U.S. Pat. No.
6,278,837 discloses a sprayer with a traditional vertical action
valve assembly. Inventions directed to dispensing personal care
products perform similar functions. U.S. Pat. No. 3,190,502
discloses an invention that will dispense shampoo in a commercial
shop, such as a beauty salon or a barber shop. A fixed electrical
pump is used to create pressure on the tank of liquid to be
dispensed, and the handheld receptor creates a flow of shampoo, and
not a spray of material.
[0008] Handheld pump sprayers are available to dispense
insecticides, such as the spray pumps that come attached to ant or
roach poison products sold in hardware and lawn and garden stores.
The dispensed material is typically carried in one hand, and the
other hand dispenses materials by squeezing the handle in a
repeated fashion, so as to cause the liquid to be dispensed in a
spray or a single stream. Such systems have also been developed to
dispense cooking oil, or other such viscous liquids. U.S. Pat. No.
5,718,383 discloses a handheld pumping mechanism attached to a feed
hose, so that vegetable oil may be sprayed on a cooking surface.
The liquid is not under pressure, and the operator provides the
mechanical energy required to operate the hand pump, thereby
controlling the amount of material dispensed.
[0009] A traditional spray-gun, as might be utilized to spray
paint, utilizes an air compressor to provide pressure, and
typically features a container into which the liquid to be sprayed
is placed. Some spraying systems have been developed specifically
for dispensing a measured amount of material from an aerosol can.
U.S. Pat. No. 5,427,281 utilizes a reservoir onto which an vertical
action valve assembly is attached. Both a traditional spray-gun and
a device with a reservoir have the problem of cleaning out the
residual material upon last use of the day. When used to dispense
materials that harden when exposed to air, such as paint, both the
reservoir and the actuator must be purged of material.
[0010] U.S. Pat. No. 5,170,939 discloses a handheld paint sprayer
which does not contain a reservoir, but which provides a special
valve which directs compressed air through the spray actuator while
insuring that no compressed air causes "backflow" of the liquid
intake hoses. Like many other actuator assemblies, cleaning of the
actuator and valve assemblies is time consuming and
complicated.
[0011] The cleaning of actuators, also referred to as nozzles, can
be accomplished with specialized and dedicated equipment. U.S. Pat.
No. 6,355,114 B1 demonstrates an apparatus for forcing solvent
through one or more nozzles, and capturing the spray for reuse, or
for disposal. When portability is not required, there are a number
of inventions which provide purging capabilities. U.S. Pat. Nos.
5,803,109 and 6,116,261 are examples of mechanisms employed in
automated paint application systems, as might be found in an
automotive assembly plant. These systems employ complex automation
to engage the purge cycle, and are integrated into a factory's
equipment.
[0012] Large industrial paint systems, which are designed to change
the color of paint applied on a frequent basis, often include a
purging capability. U.S. Pat. Nos. 3,981,320; 4,232,055; 5,072,881;
3,240,225; and 3,716,191 are examples of large industrial systems
designed with purge capabilities. The purge capability is included
to permit a single nozzle or set of nozzles to be supplied with
different colors of paint, without disassembling the equipment for
cleaning.
[0013] Systems designed to dispense special materials, such as
powder paint, also employ purging systems. U.S. Pat. Nos. 6,112,999
and 6,315,214 provide examples of systems that dispense special
paints, and employ a purging capability. Specialized amine-assisted
systems disclosed in U.S. Pat. No. 4,862,196 also employ purging
systems to clean the nozzle of the mechanism.
[0014] The prior art provides solutions for the casual consumer,
such as a typical homeowner, and for the major industrial factory.
The consumer on a shop floor, such as a maintenance depot, finds
aerosol cans to be hazardous, ineffective, wasteful, and expensive.
A simple handheld receptor, made from standard parts or easily
manufactured parts, has not been available to a facility that is
otherwise forced to use many aerosol cans, or expensive equipment
that is not cost effective. Such a handheld receptor is the object
of this invention, through a model that dispenses a liquid which is
not prone to clog the nozzle on the actuator, as well as a model
that provides a simple purging mechanism, for use with paints and
other liquids which have a tendency to clog the actuator.
SUMMARY OF THE INVENTION
[0015] The invention features a handheld body incorporating an
actuator that would be found on any aerosol spray can. By utilizing
a standard part incorporated in aerosol spray cans, maintenance
costs and manufacturing costs are minimized. In one embodiment, a
purge capability is provided so as to preserve the usefulness of
the actuator by blasting out any material that might harden when
contact is made with the atmosphere, such as when paint is
dispensed. Different spray patterns are easily achieved by
replacing the cylindrical actuator button component of the spray
actuator.
[0016] One of the main advantages of the invention is the reduction
of discarded standard aerosol cans, and the hazardous material they
often contain. When traditional aerosol cans clog, either due to
the actuator clogging with dirt or dried liquid, such as paint, or
due to the vertical valve clogging--the consumer often discards the
can and whatever contents remain in the can.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] FIG. 1 shows a perspective view of the preferred embodiment,
viewed from a point above, to the side, and to the front of the
invention.
[0018] FIG. 2 shows a perspective of an explosion view of the parts
that make up the preferred embodiment.
[0019] FIG. 2a shows a top view of the preferred design for the
insert.
[0020] FIG. 2b shows a perspective view of the preferred design for
insert.
[0021] FIG. 3 shows a cross section explosion view of the
invention, taking a cross section as viewed from the front of the
invention.
[0022] FIG. 4 shows a cross section of the assembled invention,
excluding the pistol grip and the intake tubing attachment
apparatus.
[0023] FIG. 5 shows a cross section viewed from the front, prior to
the insertion of plugs.
[0024] FIG. 6a shows a view from the side, prior to the insertion
of plugs. A view of the other side is symmetrical and
identical.
[0025] FIG. 6b shows a view from the top, prior to the insertion of
plugs.
[0026] FIG. 6c shows a view from the bottom, prior to the insertion
of plugs.
[0027] FIG. 7a shows a needle valve assembly in the closed
position.
[0028] FIG. 7b shows a needle valve assembly in the open
position.
[0029] FIG. 8 shows the needle valve assembly with a detente in
place, to prevent the inadvertent removal of the needle valve stem
from the valve.
[0030] FIG. 9 shows an embodiment of the invention which has but
one inlet.
[0031] FIG. 10 shows a cross section of the body of the simplified
embodiment with one inlet.
[0032] FIG. 11 shows a perspective isometric of the simplified
embodiment of the invention, to include the grip assembly.
[0033] FIG. 12 shows a perspective explosion view of the preferred
embodiment, to include the grip assembly and intake attachment
assemblies.
DETAILED DESCRIPTION OF THE INVENTION
[0034] The preferred embodiment of the invention is shown in FIG.
1. The handheld receptor 1 features a pistol handle assembly 2
which has a pistol handle trigger 3, which, when operated with the
index finger of an operator presses the actuator 12 downward,
releasing a spray of material dispensed by the handheld receptor 1.
A cylindrical shaped receptor body 5 utilizes a needle valve
assembly 6 on opposite sides to control the flow of propellant
entering through an inlet propellant tubing 8 through a tubing
connector assembly 7, or controls the flow of dispensed liquid fed
to the handheld receptor 1 through the dispensing liquid tubing 9
through a tubing connector assembly. An valve locking ring 4 holds
the vertical action valve assembly to the receptor body 5. Two flat
surfaces 26 are provided to assist in securing the cylindrical
receptor body 5, by means of a wrench or vise, so as to tighten the
threaded tubing connector assemblies 7 to the receptor body 5. In
the preferred embodiment the pistol handle assembly 2 is a
commercially available product constructed of plastic, the vertical
action valve assembly 11 is a standard part as would be employed in
the manufacturing of traditional aerosol spray cans, the seals 13,
16 are of a material appropriate for the liquid being dispensed.
For dispensing paint, a butyl material is preferred; for brake
cleaner and penetrant, a buna seal is preferred; Teflon works well
for many other liquids, and rubber seals are appropriate for some
liquids. The tubing 8, 9 is a commercially rated Teflon FEP
(fluorinated ethylene propylene), and the remaining parts are
machined aluminum. Any material that is either machinable or
moldable could be employed to construct the handheld receptor 1,
e.g. plastic, brass or stainless steel.
[0035] The purging model of the handheld receptor 1 permits the
operator to close the needle valve assembly 6 that provides a flow
of liquid dispensed, such as paint, and by opening the opposite
needle valve assembly 6, force air or a propellant through the
vertical valve assembly 11 and actuator 12 thereby clearing any
material from the vertical valve assembly 11 and the actuator 12,
thereby eliminating the need to clean the vertical valve assembly
11 and the actuator 12. When the handheld receptor 1 is used in
conjunction with a tank that dispenses liquid under pressure, using
gas compressed to serve as a propellant, the two feed lines to the
handheld receptor 1 provide an integrated solution.
[0036] FIG. 2 depicts an exploded view of the handheld receptor 1,
without the pistol handle assembly 2. A receptor body 5
incorporates an vertical action valve assembly 11 which provides a
actuator 12 for dispensing liquids. An insert 10 provides a ridge
for attaching the pistol handle assembly 2.
[0037] The insert 10 and vertical action valve assembly 11 are held
in place with the valve locking ring 4. The receptor body 5 may be
held stationary by means of two parallel flat surfaces 26 secured
with a traditional wrench or vise, permitting the tubing connector
assemblies 7 to be secured by means of a threaded end to the
receptor body 5. The valve locking ring 4 should be hand tightened.
Two tubing connector assemblies 7 provide for the secure attachment
of tubing that supplies propellant for purging the vertical valve
assembly 11 and actuator 12, and liquid to be dispensed through the
actuator 12. Needle valves comprise a needle valve seal 13 that
prevents leakage from the receptor body 5, a needle valve seat 14,
a detente pin 15 which prevents the needle valve stem 17 from being
removed completely from the needle valve seat 14, a needle valve
stem seal 16 that prevents leakage from the needle valve seat 14,
and the needle valve stem 17.
[0038] FIG. 2a shows a top view of the insert 10, showing two
straight edges 10a which are parallel and opposing to one another,
so as to provide a lip for attaching an optional pistol handle
assembly 2. When inserted, the pistol handle assembly 2 is inserted
into the elongated opening defined on the sides by the two parallel
edges on the insert 10, and once inserted, the pistol handle
assembly is twisted a quarter turn so that the pistol handle
assembly is pointed in a direction that is perpendicular to the two
parallel edges in the insert 10.
[0039] FIG. 2b shows a perspective view of the insert 10. with a
cross section selected from a point on the insert 10 that defines
the end of the slot into which the optional pistol grip assembly 2
would be first inserted, or from which the pistol grip assembly 10
would be removed. In the preferred embodiment of this insert
design, the outer diameter is 1.15 inches, the diameter of the
inner circular opening is one inch, the straight edges are eight
tenths of an inch apart, and the insert is 0.025 inches thick.
[0040] FIG. 3 depicts a cross-section, exploded view of the
handheld receptor 1, without the pistol handle assembly 2. A
receptor body 5 incorporates an vertical action valve assembly 11
which provides a actuator 12 for dispensing liquids. An insert 10
provides a ridge for attaching the pistol handle assembly 2. The
insert 10 and vertical action valve assembly 11 are held in place
with the valve locking ring 4. Valves comprise a needle valve seal
13 that prevents leakage from the receptor body 5, a needle valve
seat 14, a detente which prevents the needle valve stem 17 from
being removed completely from the needle valve seat 14, a needle
valve stem seal 16 that prevents leakage from the needle valve seat
14, and the needle valve stem 17. Two threaded tubing connector
receptors 18 permit the attachment of tubing connector assemblies
7, which are shown in FIG. 2.
[0041] FIG. 4 depicts a cross section of an assembled handheld
receptor 1. Two threaded tubing connector receptors 18 permit the
attachment of tubing connector assemblies 7, which are shown in
FIG. 2. A receptor body 5 incorporates an vertical action valve
assembly 11 which provides a actuator 12 for dispensing liquids.
The vertical action valve assembly 11 is held in place with the
valve locking ring 4. Two valve assemblies 6 provide control of the
liquid to be dispensed and the purging gas.
[0042] FIG. 5 depicts a cross section of a receptor body 5 with a
number of bores that facilitate the flow of liquid or purging gas
within the receptor body 5. These bores are created with a drill or
other removal tool, or are incorporated into a mold to prevent
material from filling the spaces. Two valve access bores 19 are
created from the top of the receptor body 5, stopping when they
reach the feed bore 21. The feed bore 21 traverses the receptor
body 5 from one side to the other, passing through a point in the
center of the cylindrical receptor body 5 when viewed from the top.
Two smaller valve bores 20 create a channel for material to flow
from an open needle valve assembly 6 through the feed bore 21 and
into the cavity substantially filled by the vertical action valve
assembly 11. Two transfer bores 22 are created by drilling from the
bottom of the receptor body, in two parallel paths, and carry
material from the bottom of the receptor body 5 to the valve
assemblies 6. Two inlet traverse bores 23 are produced by drilling
from the outside surface of the cylindrical receptor body, stopping
when they reach the transfer bore 22. Two connector bores 24 are
made from the bottom surface of the receptor body 5, stopping when
they reach the inlet transverse bore 23. The connector bores 24 are
enlarged and machined to form a threaded tubing connector receptor
18 for the liquid to be dispensed and the purging gas. Tapered
plugs are inserted into the various bores in order to form a
receptor body 5 as depicted in FIG. 4. The tapered plugs are
trimmed to a length that will not impede any right angle flows of
liquid or gas within the receptor body 5, and are pressed in place
with a machine press that exerts three thousand pounds per square
inch of pressure upon each plug.
[0043] FIGS. 6a, 6b, and 6c show a side, top, and bottom view of
the receptor body 5. FIG. 6a shows a side view in perspective, and
depicts the feed bore 21 and one of the inlet transverse bores 23.
Both the feed bore 21 and the inlet transverse bores 23 are plugged
with tapered plugs, inserted under pressure. FIG. 6b shows a top
view, and depicts the connector bores 24 prior to plugs inserted.
FIG. 6c shows a bottom view of the receptor body 5, and shows the
threaded tubing connector receptors 18 that are enlarged after the
connector bores 24 are created. The transfer bores 22 are machined
and then plugged with tapered plugs. The two flat surfaces 26 are
depicted, which permit the cylindrical receptor body 5 to be firmly
held with a wrench or vise.
[0044] FIGS. 7a and 7b show the needle valve assembly 6 in an open
and closed position. FIG. 7a depicts the needle valve assembly 6 in
a closed position. The needle valve assembly 6 is placed in this
position by turning the needle valve stem 17 clockwise until the
needle valve stem 17 seats firmly in the needle valve seat 14. A
needle valve stem seal 16 prevents leakage of the controlled
material from the needle valve assembly 6. FIG. 7b shows the needle
valve assembly 6 in an open position. The needle valve assembly 6
is places in this state by turning the needle valve stem 17 in a
counter-clockwise direction.
[0045] FIG. 8 shows the needle valve assembly 6 in an open
position, wherein the needle valve stem 17 is prevented from
disengaging from the needle valve seat 14 by means of a detente pin
15 which restricts the path of the needle valve stem 17. A valve
transfer bore 25 permits the flow of material to leave the needle
valve assembly 6 when the needle valve assembly 6 is in an open
position.
[0046] FIG. 9 depicts the simplest embodiment of the handheld
receptor 1. A receptor body 5 incorporates an vertical action valve
assembly 11 held in place by an valve locking ring 4. FIG. 10
depicts the receptor body 5 for this minimal implementation, with a
threaded tubing connector receptor 18 shown that provides a liquid
to be dispensed which does not require that the actuator 12 be
purged. A solvent, for example, will evaporate and not clog the
actuator 12, if left in the actuator 12 after use.
[0047] FIG. 11 depicts a non-purging version of the handheld
receptor 1. An optional pistol handle assembly 2 is attached to the
handheld receptor 1 by means of an insert 10. The insert 10 and
vertical action valve assembly 11, which includes a actuator 12,
and is attached to the receptor body by means of an valve locking
ring 4. A tubing connector assembly 7 mechanically attaches a
tubing supplying a liquid under pressure to the handheld receptor
1. Two parallel flat edges provide a means of firmly gripping the
receptor body 5 when the valve locking ring 4 is tightened.
[0048] FIG. 12 depicts a perspective isometric view of the
preferred embodiment, with the optional pistol handle assembly 2 in
place. A receptor body 5 incorporates an vertical action valve
assembly 11 which provides a actuator 12 for dispensing liquids. An
insert 10 provides a ridge for attaching the pistol handle assembly
2. The insert 10 and vertical action valve assembly 11 are held in
place with the valve locking ring 4. The receptor body 5 may be
held stationary by means of two parallel flat surfaces 26 secured
with a traditional wrench or vise. Two tubing connector assemblies
7 provide for the secure attachment of tubing that supplies
propellant for purging the actuator 12, and liquid to be dispensed
through the actuator 12. Valves comprise a needle valve seal 13
that prevents leakage from the receptor body 5, a needle valve seat
14, a detente which prevents the needle valve stem 17 from being
removed completely from the needle valve seat 14, a needle valve
stem seal 16 that prevents leakage from the needle valve seat 14,
and the needle valve stem 17.
* * * * *