U.S. patent number 3,871,584 [Application Number 05/479,670] was granted by the patent office on 1975-03-18 for disconnectable supply conduit for hair spray systems.
This patent grant is currently assigned to Watsco, Inc.. Invention is credited to William Wagner.
United States Patent |
3,871,584 |
Wagner |
March 18, 1975 |
DISCONNECTABLE SUPPLY CONDUIT FOR HAIR SPRAY SYSTEMS
Abstract
A manually disconnectable flexible dual conduit for
interconnection between a fluid and pressurized air supply
receptacle at one end and a hair spray gun at the other end is
described. A molded connector body member at each end of the
conduit has swivelingly supported in parallel through openings
therein a pair of tubular receptacle members, each communicating at
one end with an end portion of one of the conduit members of the
dual conduit, and being adapted to interfittingly receive similarly
swiveled projecting prong members of the supply receptacle and the
spray gun. Yieldable snap-fit mechanism is provided at each of the
connector members to effect interlocking connection, yieldable for
manual disconnect upon the application of a withdrawal force
substantially greater than that which would be required merely for
withdrawal from the connecting prongs.
Inventors: |
Wagner; William (Miami Beach,
FL) |
Assignee: |
Watsco, Inc. (N/A)
|
Family
ID: |
23904929 |
Appl.
No.: |
05/479,670 |
Filed: |
June 17, 1974 |
Current U.S.
Class: |
239/307; 239/373;
239/600; 239/526; 285/921 |
Current CPC
Class: |
B05B
7/24 (20130101); Y10S 285/921 (20130101) |
Current International
Class: |
B05B
7/24 (20060101); B05b 007/32 () |
Field of
Search: |
;239/600,588,195,307,337,373,526 ;285/137R,DIG.22 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: King; Lloyd L.
Assistant Examiner: Mar; Michael
Attorney, Agent or Firm: Schmidt; Ernest H.
Claims
What I claim as new and desire to secure by Letters Patent is:
1. In a disconnectable supply conduit for hair spray systems
including a fluid and pressurized air supply receptacle, a spray
gun, and a flexible supply conduit communicating between the fluid
and pressurized air supply receptacle, and the spray gun, the spray
gun and the supply receptacle each having a pair of
outwardly-projecting, side-by-side connector prongs and mechanism
for interhookingly connecting with a connector member, the
improvement comprising, a pair of flexible side-by-side conduit
members, a molded connector body member at each end of said conduit
members, a pair of side-by-side cylindrical through openings in
each of said molded connector body members, a tubular receptacle
member in one each of said connector body member through openings
and communicating at one end with an end portion of one each of the
ends of said pair of flexible side-by-side conduit members, and
means for swivelingly supporting opposite end portions of each of
said tubular receptacle members within their respective through
openings, said connector body members each comprising yieldable
hook means cooperative with the interhooking mechanism of the spray
gun and the supply receptacle, respectively, the connector prong
pairs of said spray gun and said supply receptacle being
interfittingly receivable within respective pairs, each, of said
connector body members.
2. The improvement as defined in claim 1, wherein said tubular
receptacle members are of metal and wherein said swiveling means
comprises an annular bead formed about the outside of each of said
tubular receptacle members receivable in complementary recesses
formed within each of said body member through openings, the
exterior diameter of each of said tubular receptacle members being
somewhat less than the diameter of their respective through
openings.
3. The improvement as defined in claim 2, including a resilient
O-ring fitted within a complementary interior recess near said
opposite end portion of each of said tubular receptacle
members.
4. The improvement as defined in claim 3, wherein one of said
connector body members is formed with a planar outer end face into
which its pair of side-by-side cylindrical through openings extend,
and a catch portion extending upwardly and rearwardly of one end of
said face portion, said catch portion being operative to snap-fit
behind the rear wall portion of a recess in the spray gun
comprising its interhooking mechanism.
5. The improvement as defined in claim 4, wherein said face portion
of said connector body member, at the opposite side thereof with
respect to said catch portion, is provided with projection means
serving as a fulcrum for rocking said last-mentioned connector
member against an end face portion of the spray gun upon
interhookingly connecting said last-mentioned connector body member
to said spray gun.
6. The improvement as defined in claim 5, wherein said projection
means comprises three laterally-extending, equidistantly-spaced
rounded projections.
7. The improvement as defined in claim 4, wherein the other of said
connector body members if formed with a planar outer end face into
which its pair of side-by-side cylindrical through openings extend,
and a tongue portion extending outwardly of the upper end of said
last-mentioned planar outer end face, said tongue portion having,
at its outer end, means operative to snap-fit in partially
surrounding relation about a locking post of the supply receptacle
comprising its interhooking mechanism.
8. The improvement as defined in claim 7, wherein said snapfit
means comprises a through circular opening near the outer end of
said tongue portion, and an entranceway communicating between the
outer end of said tongue portion and said through opening in said
tongue portion, said entranceway being defined by opposed side wall
portions converging inwardly from the outer end of said tongue
portion to a spacing therebetween that is less than the diameter of
said through circular opening.
Description
In my U.S. Pat. No. 3,758,039, issued Sept. 11, 1973, there is
described a spray gun for applying hair setting fluids and the like
in which pressurized air and the fluid to be sprayed are fed or
supplied separately through side-by-side flexibel conduits for
mixing in a mixing chamber of the spray gun prior to discharge
through the spray gun nozzle. Heretofore in such hair spray
systems, the dual supply conduit was fixedly jointed at its
respective ends to the supply receptacle and the spray gun during
the manufacturing process. Thus, whenever it became necessary for
one reason or another, such as wear due to heavy useage, or
clogging of the fluid conduit because of lacquer solids build-up,
or the like, much of the equipment had to be disassembled to
properly install a new conduit. Such replacement not only was
difficult and time consuming, but could be performed only by a
technician having the requisite knowledge and materials.
It is, accordingly, the principal object of this invention to
provide a flexible dual supply conduit having manually releasable
connector means at each end for connecting between a fluid and
pressurized air supply receptacle, and a spray gun of the type
disclosed in my above-identified patent.
A more particular object of the invention is to provide
interconnection mechanism at each end of a flexible dual supply
conduit of the above nature which incorporates snap-fit means
serving to capture the connectors with respect to their associated
supply receptacle and spray gun interconnecting mechanism, so as to
require substantial manual withdrawal force for disconnect, thereby
minimizing any possibility of accidental or inadvertent
disconnection of the supply conduit during use of the spray
system.
Another object of the invention is to provide a manually
disconnectable flexible dual supply conduit for hair spray systems
utilizing a pressurized air propellant spray gun wherein the
interconnecting mechanism between the ends of the conduit and the
supply receptacle and spray gun comprise tubular ferrule
receptacles or female members within which are removably received
tubular prong members comprising the connector means of the supply
receptacle and the spray gun, and wherein O-ring means within each
prong-receiving receptacle is utilized to minimze the posibility of
leakage at the connection junctures even under the force of the
pressurized air supplied through the supply receptacle for
operating the spray gun.
Yet another object of the invention is to provide a flexible dual
supply conduit of the character described which can be inexpensibly
molded of a synthetic plastic material, and which will be easy to
connect and disconnect with respect to a fluid and pressurized air
receptacle at one end, and a spray gun at the other end.
Yet another object of the invention is to provide a flexible dual
supply conduit of the above nature which will be simple in
construction, attractive in appearance, economical in cost, and
dependable and long wearing in operation.
Other objects, features and advantages of the invention will be
apparent from the following description when read with reference to
the accompanying drawings. In the drawings, wherein like reference
numerals denote corresponding parts throughout the several
views:
FIG. 1 illustrates a spray gun apparatus including a readily
disconnectable flexible dual spray gun feed or supply conduit
embodying the invention;
FIG. 2 is a longitudinal vertical cross-sectional view of the
snap-fit spray gun female connector member at one end of the dual
supply conduit;
FIG. 3 is a top view of the spray gun snap-fit connector member
illustrated in FIG. 2;
FIG. 4 is a longitudinal vertical cross-sectional view of the
snap-fit supply connector member at the other end of the dual
supply conduit; and
FIG. 5 is a top view of the supply connector member illustrated in
FIG. 4.
Referring now to the drawings, reference numeral 10 designates,
generally, a disconnectable, dual, fluid and pressurized air supply
conduit embodying the invention, showing its use in association
with a supply receptacle or container 11 and a spray gun 12, which,
taken together, comprise a spray system for applying hair treating
and hair setting fluids in beauty salons and the like. This
invention is directed to the connector mechanism at the spray gun
end of the supply conduit 10, comprising the female connector 13
cooperative with the male connector mechanism 14 of the spray gun,
and the female connector member 15 at the other end of the supply
conduit and cooperative with the male connector mechanism 16
provided at the connection to the supply container 11. Since the
construction and operational details of the spray gun 12, other
than as modified herein, are fully disclosed in my U.S. Pat. No.
3,758,039, only so much thereof is illustrated and described herein
as is deemed necessary to fully disclose the present invention.
As best illustrated in FIGS. 1, 2 and 3, the female connector 13
comprises an integrally formed body member 17, which may be of a
tough, substantially rigid, synthetic plastic material having a
substantially flat front face portion 18 merging, at its lower
edge, with a rectangular, outwardly-extending tongue portion 19.
The underside of the tongue portion 19 merges, along its inner end,
with a comparatively short, receding front face portion 20 the
planar face of which defines an angle of approximately 30 degrees
with the extended planar face of the front face portion 18.
Integrally formed within the body member 17 is a pair of
side-by-side through, cylindrical openings 21, 22 (only opening 22
illustrated in FIG. 2). Received within each of the through
openings 21, 22 is a receptacle ferrule 23, which is preferably
fabricated of metal, having a forward, substantially cylindrical
prong receiving portion 24 extending into a rearward,
reduced-diameter connector sleeve portion 25. At its foreward end
the prong receiving portion 24 is formed with an outer peripheral
annular bead 26 which serves to capture and retain the receptacle
ferrule 23 in place by interfitting engagement with a complementary
annular recess 27 provided within the through cylindrical opening
22. In this connection, it is to be noted that the outer diameter
of the cylindrical surface of the prong receiving portion 24 is
slightly less than that of the through opening of the body member
17 in which it fits to provide for limited swiveling movement with
respect to the retaining complementary recess 27. The outer end of
the prong receiving portion 24 of the receptacle ferrule 23 is
provided, near the outer end of the cylindrical opening 24a of said
prong receiving portion with an annular recess of substantially
semi-circular cross-sectional shape for the reception and retention
of a complemental O-ring 28. Projecting outwardly of the front face
portion 18 of the body member 17, at a position just below the
through cylindrical openings 21, 22 thereof, are three
laterally-extending, equidistantly-spaced, rounded projections 29,
30, 31. The upper end of the front surface portion 18 of the body
member 17 merges into a central, slightly upwardly-extending catch
portion 32 having a rearwardly-extending, upwardly-inclined upper
surface portion 32a terminating in an arcuately-rounded back
surface portion 33. As best illustrated in FIG. 2 the arcuately
rounded back portion 33 comprises a rearwardly and
downwardly-extending surface portion 34 and a substantially
vertical rear surface portion 35.
As illustrated in FIG. 2, end portions of the dual supply conduit
10 at one end thereof are connected to their respective ferrules 23
by slide fit in telescoping fashion over the respective sleeve
portions 25, to which they are preferably secured by use of a
suitable adhesive.
As best illustrated in FIG. 1, the spray gun 12, which is
preferably fabricated of a tough synthetic plastic material,
comprises a body member 36 integrally formed with a handle portion
37. Secured against an outer surface portion of the handle portion
37 is a handle cover member 38, having an outer end portion 39
extending somewhat beyond the end face 40 of said handle portion.
As further illustrated in FIG. 1 the underside of the outer end
portion 39 of the cover member 38 is formed with an arcuate recess
41 for the purpose hereinafter appearing. The outer end of the
handle portion 37, moreover, is formed with a
longitudinally-extending, rectangular recess 42 receivable within
which is trigger member 43 upon manual actuation of the spray gun.
Projecting outwardly of the end face 40 of the handle portion 37 is
a pair of tubular laterally-spaced male connector members or prongs
44, 45 which, at their inwardly-extending ends, connect with
flexible conduits for communication with the mixing chamber and
nozzle mechanism of the spray gun. The male connector members 44,
45 are retained in place in their respective cylindrical openings
in a manner similar to that utilized in retaining the female
connector ferrules 23, in their respective openings of the body
member 17 of the female connector 13, as is hereinabove described.
As so assembled, it will be understood that the male connector
members 44, 45 are permitted limited swiveling movement with
respect to the handle portion 37 of the spray gun 12, for the
purpose hereinafter appearing.
In use, interconnection of the female connector 13 with the spra
gun at 12 is effected, as best illustrated in FIG. 1, by inserting
the male connector members 44, 45 into the respective female
connector ferrules 23 while at the same time pushing downwardly
slightly upon rear end portion of the body member 17 of said female
connector to permit the upwardly-extending catch portion 32 thereof
to pass by the underside of the outer end portion 39 of the spray
gun handle cover member 38. The above-described swivel action of
the receptacle ferrules 23 and their associated male connector
members 44, 45 permits such non-axial movement of the female
connector 13 with respect to the spray gun 12. During this plug-in
operation, the tongue portion 19 of the female connector 13 is
loosely received within the rectangular recess 42 of a spray gun.
The laterally-disposed, rounded projections 29, 30, 31 in the front
face portion 18 of the body member 17 serve as a fulcrum about
which the female connector 13, once pushed home against the end
face 40 of the spray gun handle portion 37, can be rocked upwardly
to resiliently force the catch portion 32 up into the arcuate
recess 41 for securely retaining the female connector 13 in
interconnected relation with respect to spray gun. In this
connection, it will be noted that the relief zone provided by the
receding front face portion 20 of the female connector 13 permits
the above-described downward rocking motion of said connector
member about the pivotal projections 29, 30 and 31 upon carrying
out the interhooking attachment motions as described above.
The female connector member 15 at the other end of the dual supply
conduit comprises an integrally moled, substantially-rectangular
body portion 46 (see FIGS. 1, 4 and 5) having a pair of
longitudinal, side-by-side, through openings 47 (only one
illustrated in FIG. 4) receivable within which are metal receptacle
ferrules 48 (only one illustrated), connected one each to the
individual tubular end portions of the supply conduit 10a, 10b. The
receptacle ferrules 48 are similar in construction to the
receptacle ferrules 23 of the female connector 13, and are
similarly assembled for limited swiveling motion within and with
respect to their respective through openings 47. As best
illustrated in FIG. 4, the outer end face of the rectangular body
portion 46 of the female connector member 15 is substantially flat,
and said body portion is further integrally formed with a tongue
portion 49 extending outwardly of the upper surface of said body
portion and defining an angle of approximately 90 degrees with
respect to said front face. The tongue portion 49 is provided with
a circular through opening 50 which opens into the outer end of
said tongue portion through an entranceway defined by opposed side
walls 51, 52 converging inwardly from the outer end of said tongue
portion. The opening or recess thus defined by opposed side walls
50, 51 and the circular through opening 50 is thus of key-hole
shape.
The supply container 11 is also preferably formed of a tough
synthetic plastic material, and comprises a screw-on cap member 53
having an integrally-molded, upwardly-extending, substantially
semi-circular projection or connector head 54. The connector head
54 has integrally molded, laterally extending conduit prong members
55 (only one illustrated in FIG. 4). The conduit prong members
55,55 conduct pressurized air and fluid under pressure to the
individual conduits of the supply conduit 10 for controlled supply
to the spray nozzle mechanism of the spray gun 12.
As best illustrated in FIG. 4, interconnection of the female
connector member 15 with the fluid and pressurized air supply
prongs of the cap member 53 is effected simply by pushing said
female connector member straight upon the supply prongs for
interengagement with the respective receptacle ferrules 48,
whereupon the opening of the tongue portion 49 of the connector
member 15 will receive an integral locking post 56 extending
upwardly of the cap connector head 54 to interhookingly engage said
tongue portion. In this connection, it is to be noted that the
diameter of the locking post 56 is somewhat greater than that of
the opening into the circular through opening 50 of the tongue
portion 49 so that the outer end portions of said tongue portion
spread somewhat apart during the connecting process, thereafter to
return to normal position again in embracing relation with respect
to said locating post portion after the female connector 15 is
pushed home against the connector head 54. It will further be
understood that the tongue portion 49 of the female connector
member 15 is of such length with respect to the prong members 55,
55 that the entrance opening or mouth at the outer end of said
tongue member begins to receive the locating post member 56 just
before the prongs are received in their respective receptacle
ferrules 48 to serve as indexing or guide means for the manual
push-on connection of the female connector member 15. Upon removal
or disconnection of the female connector member 15 it will be
understood that sufficient direct withdrawal force must be exerted
upon the body of the female connector member 15 to spread the
somewhat embracingly interhooking outer end portions of the tongue
portion 49 thereof, which requires substantially greater pulling
force than would otherwise be required for withdrawal with respect
to the connector prongs 55, 55. It will thus be understood that
this interlocking means of the female connector member 15 and the
above-described mechanism of the female connector 13 serve to
prevent inadvertent loosening and disconnecting of the supply
conduit 10 at either end. Whenever it is required to replace the
supply conduit 10, however, this can readily be done manually and
without the use of tools as hereinabove described.
While I have illustrated and described herein only one form in
which the invention can conveniently be embodied in practice, it is
to be understood that this form is presented by way of example only
and not in a limiting sense. The invention, in brief, comprises all
the embodiments and modifications coming within the scope and
spirit of the following claims.
* * * * *