U.S. patent number 3,910,265 [Application Number 05/361,560] was granted by the patent office on 1975-10-07 for hygienic device.
Invention is credited to Martin Richard Coleman.
United States Patent |
3,910,265 |
Coleman |
October 7, 1975 |
Hygienic device
Abstract
An illustrative embodiment of the invention discloses a
light-weight shower brush that provides a physically beneficial
massaging and cleaning action. The water flow intensity from the
brush's scrubbing head can be varied through adjustable ports
within the head that are operated by rotating the brush proper. An
oscillating valve within the brush's shaft, moreover, enables the
water that gushes from the scrubbing head to discharge in a
pulsating manner and thereby impart an invigorating massage during
application. A separate bath oil reservoir also is provided within
the shaft. This reservoir communicates through two apertures with
the water flowing toward the scrubbing head in order to enable
measured amounts of the bath oil to mix with the water for hygienic
purposes.
Inventors: |
Coleman; Martin Richard
(Oceanside, NY) |
Family
ID: |
23422527 |
Appl.
No.: |
05/361,560 |
Filed: |
May 18, 1973 |
Current U.S.
Class: |
601/160; 401/43;
401/271; 15/22.1; 601/114 |
Current CPC
Class: |
B05B
1/3026 (20130101); B05B 7/2443 (20130101); A46B
13/06 (20130101); B05B 3/04 (20130101); B05B
1/18 (20130101) |
Current International
Class: |
A46B
13/00 (20060101); A46B 13/06 (20060101); B05B
1/30 (20060101); B05B 3/02 (20060101); B05B
3/04 (20060101); B05B 7/24 (20060101); B05B
1/18 (20060101); A61H 009/00 (); A46B 011/06 () |
Field of
Search: |
;401/281,271,40-43,270
;128/66 ;15/29 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
|
|
|
|
|
|
|
436,216 |
|
Nov 1967 |
|
CH |
|
592,510 |
|
Feb 1960 |
|
CA |
|
Primary Examiner: Charles; Lawrence
Attorney, Agent or Firm: Sinnott, Esq.; J. P.
Claims
I claim:
1. A hygienic device comprising a shaft having a conduit formed
therein for promoting continuous flow, a scrubbing head secured to
said shaft and having at least one port formed therein for fluid
communication with said conduit, means for regulating said fluid
communication, said scrubbing head being rotatable relative to said
shaft for selectively registering said scrubbing head port with
said conduit port, and means within said conduit for automatically
varying the intensity of said fluid flow through said shaft.
2. A device according to claim 1 wherein a spindle connects said
scrubbing head to said shaft for rotation relative thereto.
3. A device according to claim 2 wherein means for establishing
frictional forces between said shaft and said scrubbing head are
interposed therebetween.
4. A device according to claim 3 wherein said frictional means
further comprises a gasket associated with one of said ports.
5. A device according to claim 1 wherein said automatic flow
intensity varying means comprises a fin within said shaft conduit
to establish two flow channels, a flow-powered driving means in one
of said channels, and a flow interruptor in said other channel
driven by said driving means and automatically obstructing and
opening said respective channel to flow therethrough.
6. A device according to claim 1 further comprising a
longitudinally disposed reservoir formed in said shaft, said
reservoir having a partition separating said reservoir from said
conduit and having apertures formed at the longitudinal extremeties
of said partition to establish liquid communication between said
reservoir and said conduit.
7. A device according to claim 6 further comprising a filler cap in
engagement with said shaft in order to establish means for filling
said reservoir, and a gasket bevelled on one side thereof
interposed between said cap and said shaft to promote a pressure in
said reservoir that is higher than the pressure in said
conduit.
8. A device according to claim 6 further comprising a filler cap in
engagement with said shaft in order to establish means for filling
said reservoir, said cap having a passageway formed therein to
enable gas to flow into said reservoir and to block liquid flow out
of said reservoir.
9. A device according to claim 6 further comprising a filler cap in
engagement with shaft in order to establish means for filling said
reservoir, and a gasket interposed between said cap and said shaft,
said gasket having a passageway formed therein to enable gas to
flow into said reservoir and to block liquid flow out of said
reservoir.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to hygienic techniques and, more
particularly, to an improved brush for washing, massaging, soaping,
and the like.
2. Description of the Prior Art
Through the years, a number of proposals have been advanced to
combine soap dispensers with scrub brushes in order to provide an
apparatus that mixes the soap with a stream of water flowing
through the brush handle and out of the scrubbing head. Many of
these proposed designs have been characterized by complicated and
expensive valves, passageways and manufacturing methods. Other
designs have required essentially permanent changes to the
household plumbing -- changes that are beyond the usual mechanical
ability of the average home owner or apartment dweller and require
the services of a skilled plumber for installation.
In spite of the relative complexity that has marked these earlier
proposals, water flow regulation nevertheless was controlled
through the installed faucets in the tub, sink or shower stall.
This arrangement requires the person bathing or washing to
interrupt the particular activity and make an awkward and
inconvenient adjustment to the water flow at the faucets in order
to satisfy the circumstances of the moment, or otherwise to
continue washing at a less than comfortable or efficient pressure
and flow rate.
A number of additional inadequacies in prior scrub-brush designs
also can be identified. Those proposals, for example, which
required the application of continuous manual pressure on some part
of the brush structure to maintain water flow through the scrubbing
head were physically inconvenient when the need arose to scrub
one's own back, or to shift the brush to the other hand. In some
designs, moreover, soap flow stopped if the brush was inverted or
held horizontally. Water flow from the brush, save for faucet
regulation or relaxing the grip on the brush handle was continuous
and uninterrupted.
Clearly, there is a need for a rugged, easily manufactured scrub
brush that overcomes these shortcomings. Further, a brush is needed
that has qualities that are lacking in existing designs and which
can be made available to the public at a reasonable cost.
SUMMARY
In accordance with the invention, the disadvantages of prior
scrub-brush proposals are, to a significant extent, overcome. For
example, in an illustrative embodiment of the invention, the
scrubbing head is mounted on the shaft or handle by means of a
spindle. Mounted in this manner, the scrubbing head can be rotated
relative to the shaft in a plane that is generally perpendicular to
the direction of water flow through the head. Communicating ports
are provided in the base of the scrubbing head and the end of the
shaft. Rotating the scrubbing head relative to the end of the shaft
brings those communicating ports into complete or partial registry,
as desired. This structural feature of the invention enables the
user of the brush to throttle or vary the intensity of the water
flow from the scrubbing head in accordance with the flow area
common to the opposing ports in the end of the shaft and the base
of the scrubbing head. Thus, through a simple manipulation, flow
control is provided for the brush at the point of use.
If necessary, flow through the brush can be stopped by moving the
communicating ports completely out of registry with each other.
Within the shaft, and preferably near the scrubbing head, an
oscillating valve flow pulsator can be positioned in order to
interrupt the water flow from the brush intermittently, or to cause
the flow intensity to pulsate. This specific characteristic of the
invention provides the user with a healthy, invigorating massage
while bathing.
Also within the shaft, and disposed adjacent to the water conduit,
the invention further may provide a reservoir for liquid soap, bath
oil or some other substance. The reservoir is longitudinally
disposed within the shaft and has, toward opposite extremities,
respective holes, or apertures, that establish fluid communication
between the reservoir and the water conduit. The swiftly flowing
water in the handle establishes a relatively low pressure at the
conduit surface adjacent to these apertures. The higher pressure
within the liquid cleansing agent, or bath material, causes a
stream of the substance within the reservoir to flow through one or
both of these apertures and mix with the water.
The position of these two apertures, at opposite longitudinal ends
of the reservoir, promotes continuous flow from the reservoir into
the conduit in spite of the angle at which the brush is held or the
particular motion that the brush may be undergoing while in
use.
A further aspect of the invention is characterized by a flexible
gasket on the reservoir filler cap. This gasket is flat on one side
and chamfered, or bevelled, on the other side. As the bathing
material flows into the conduit, air at atmospheric pressure is
allowed to enter the reservoir in order to maintain the reservoir
pressure high relative to the water pressure in the conduit. The
chamfered edge of the gasket flexes readily in one direction to
admit air to the reservoir and restore atmospheric pressure. The
gasket, however, restricts soap and the like from flowing in the
opposite direction out of the reservoir when water flow is
terminated.
Naturally, other check valves can be used to restore higher
pressure to the reservoir. Typically, a spring loaded valve can be
made a part of the reservoir filler cap. Illustratively, a very
small pore also can be formed either in the filler cap gasket or in
the filler cap proper. The pore diameter is so chosen that viscous
soaps, bath oils, and the like can not drain through the pore. Air,
however, can flow with freedom through the pore and into the
reservoir and thus maintain sufficient pressure to promote soap
discharge.
A holder secured to the wall near the place of use can be provided
in order to allow the brush to be stored neatly when it is not in
use.
Thus, there is provided in accordance with the invention, a scrub
brush that can be readily molded in plastic to make available to
the public a sturdy and relatively inexpensive device that
overcomes many of the inadequacies of prior designs. The flow
intensity is easily adjusted at the scrubbing head, for example.
Additionally, the flow of water and of soap or bath oil is
uninterrupted without regard to the position of the brush or the
hand of the user relative to the brush. Pulsating water flow also
is available through the incorporation of an oscillating valve
structure in the shaft.
For a more complete understanding of the present invention,
together with other and further objects thereof, reference is had
to the following description taken in conjunction with the
accompanying drawing, the scope of the invention being pointed out
in the appended claims.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is a side elevation in full section of a typical embodiment
of the invention;
FIG. 1A is a plan view of a portion of the device that is shown in
FIG. 1 taken along the line A--A of FIG. 1 and looking in the
direction of the arrows;
FIG. 1B is a plan view of a portion of the device that is shown in
FIG. 1 taken along the line B--B of FIG. 1 and looking in the
direction of the arrows;
FIG. 2 is a bottom view of a portion of the embodiment of the
invention that is shown in FIG. 1, taken along the line 2--2 of
FIG. 1 and looking in the direction of the arrows;
FIG. 3 is a plan view of a portion of the embodiment of the
invention that is shown in FIG. 1, taken along the line 3--3 of
FIG. 1 and looking in the direction of the arrows;
FIG. 4 is a typical reservoir filler cap for use in accordance with
the invention;
FIG. 5 is a portion of a gasket for use with a reservoir filler
cap;
FIG. 6 is another reservoir filler cap for use in connection with
the invention; and
FIG. 7 is a front elevation of a wall bracket for supporting the
brush shown in FIG. 1 when it is not in use.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
For a more complete appreciation of the invention, attention is
invited to FIG. 1 of the drawing. As shown, a scrub brush, molded
in plastic or fashioned from some other suitable material, is
connected to a water supply through a flexible hose 10 that
terminates in a compressible fitting 11. A threaded collar 12
couples the hole to a threaded male nipple 13 that is formed on the
water inlet end of a hollow brush shaft 14.
The shaft 14 has a main water flow conduit 15 that terminates, at
the discharge end, in an essentially right-angle turn 16. At the
end of the turn 16, the conduit 15 is partially obstructed by a
partition 17. As shown in FIG. 2, the partition 17 is generally
circular and has two diametrically disposed ports 20 and 21 formed
in its surface. A threaded aperture 22 also is formed in the center
of the partition 17. A pair of flexible gaskets 23 and 24
circumscribe respective protruding flanges 25 and 26 that establish
the individual peripheries of the ports 20 and 21. A pair of stops
27 and 30 (shown in FIG. 2) protrude from the surface of the
partition 17 in the same direction as the flanges 25 and 26.
Turning once more to FIG. 1, a rotatable scrubbing head 31 is
secured adjacent to the partition 17. The head 31, moreover, is
connected to the partition by means of a spindle 32 that penetrates
a centrally disposed hole 33 formed in the head 31. The spindle 32
has a threaded end which is received in the mating threaded
aperture 22 that is formed in the surface of the partition 17.
The head 31 has a base 34 that is held in engagement with the
flanges 25 and 26 and the gaskets 23 and 24 on the partition 17
through the force that is applied by the spindle 32. Because the
gaskets 23 and 24 in the uncompressed state protrude slightly
beyond the respective flanges, the compression force applied by the
spindle 32 establishes a moderate degree of frictional resistance
against rotation between the base 34 of the head 31 and the
gaskets.
As shown in FIG. 3, the base 34 of the scrubbing head 31 also is
provided with two radially oriented and diametrically arranged
ports 35 and 36. These ports each are of the same size as the
respective associated ports 20 and 21 formed in the partition 17. A
travelling stop 37 also is formed on the base 34. The travelling
stop (not shown in FIG. 1) is engaged between the stops 27 and 30
on the partition 17. When so engaged the stop 37 limits the travel
of head 31 to enable the sets of ports 20 and 35 and 21 and 36 on
the partition and the head to register in full alignment, as shown
in FIG. 1, thereby permitting maximum flow through these ports, or
in some degree of partial registry to provide a desired change in
flow velocity. Flow is, of course, terminated when the sets of
ports are completely out of alignment and are not in any degree of
registry with each other. The limited movement of the stop 37 that
is defined by the pair of stops 27 and 30 also aids relative
orientation by enabling the user to readily identify the fully open
and fully closed positions, as well as partially opens intermediate
positions. The frictional forces applied by the gaskets 23 and 24,
moreover, tend to stablize the position of the scrubbing head
relative to the shaft during use of the brush in order to maintain
the desired flow intensity.
As illustrated in FIG. 1, the scrubbing head 31 terminates in a
skirt 40 and a brush plate that is generally transverse to the
direction of water flow from the shaft 14. The brush plate has a
group of perforations 42 that enable water from the ports to flow
out of the scrubbing head. As shown in the drawing, tufts of
bristles 43 are received in, and complete the head 31.
Alternatively, a number of scrubbing or scouring members can be
used on the head 31. Molded rubber fingers, suction cups or a
porous foam rubber sponge are typical of the cleansing,
body-contact devices that can be used with the invention.
Within the shaft 14, and just within the right angle 16, a flow
pulsator or interrupter 44 is positioned. For illustrative
purposes, the pulsator 44 has a paddle wheel 45 and a parallel vane
or intermittant flow cylinder 46. The wheel 45 and the vane 46 are
secured to an axle 47 that is disposed transverse to the direction
of flow within the shaft 14. The axle 47 is supported in a journal
50 that is formed in a flow dividing fin 51 that separates the
conduit 15 into a vane channel 52 and a paddle wheel channel 53.
The extreme ends of the axle 47 are received in axle bearings 54
and 55 formed in the inner surface of the shaft.
As shown in FIG. 1A, the vane 46 is, illustratively, a solid member
of slightly greater than semicircular shape. The vane channel 52,
moreover, is somewhat reduced in cross-sectional area adjacent to a
recess 46A that accommodates the vane 46. The paddle wheel 45, as
shown in FIG. 1B, is received in a recess 45A. The paddle wheel
channel 53 also is reduced in cross sectional area adjacent to the
wheel 45. The constricted channel areas tend to increase liquid
flow velocity as the liquids impinge on the paddle wheel 45 or the
vane 46.
Water flowing through the paddle wheel channel 53 imparts rotary
motion to the wheel 45, which causes the axle 47 to turn. The vane
46 (which can be somewhat more than one-half of a cylinder as shown
in the drawing, a simple flat vane, or a cylinder with an
asymmetric or off-center bore, for instance) also turns with the
axle 47 to block and then permit water to flow toward the scrubbing
head 31. The intermittant, pulsating action of the flow through the
head can provide the user of the brush with a pleasing, healthy and
invigorating massage while bathing.
Naturally, a number of different types of automatically oscillating
valves are suitable for this use and can be modified to provide
physically beneficial water flow patterns. Thus, the period and
frequency of the pulsations, the duration of the individual pulses,
and the like, can be provided to suit individual wishes.
In order to mix soap, bath oil, medications or other substances
with the water flowing through the conduit 15, a reservoir 56 is
provided in the shaft 14. As shown, the reservoir 56 is formed by a
partition 57 that forms one side of the conduit 15. A pair of
apertures 60 and 61 are formed in the longitudinal extremities of
the reservoir partition 57 to establish liquid communication
between the reservoir 56 and the conduit.
Water, flowing through the conduit 15 at high velocity, establishes
low pressures in the vicinities of the apertures 60 and 61. The
somewhat higher pressure in the reservoir 56 forces the substance
within the reservoir to flow through the appertures 60 and 61 and
mix with the stream of water. Natural flow turbulence within the
conduit 15 tends to produce good mixing, and tends to produce a
lather in the event that soap is dispensed. For the apertures 60
and 61, diameters of 3/64 inch to 5/64 inch should be generally
adequate for the purpose of the invention.
To fill and replenish the reservoir 56 with dispensable matter, a
threaded filler cap 62 is received in a mating threaded recess 63
that is formed in the outer surface of the shaft 14. For the
purpose of enabling the user to have a firm, comfortable grip on
the shaft 14, the top of the cap 62, when fully seated in the
recess 63, is flush with the outer shaft surface. If desired, this
general surface area also can be corrugated, knurled, or the like,
to provide a fine gripping surface.
To maintain flow from the reservoir 56 into the conduit 15, higher
pressure should be maintained within the reservoir relative to the
pressure in the conduit 15. In accordance with a feature of the
invention, and as shown in FIG. 4, air flow into the reservoir is
provided by means of a bevelled or chamfered gasket 64. The thin
edge of the gasket 64 acts as a check valve that allows air to flow
into the reservoir, while preventing fluids within the reservoir
from flowing out in the opposite direction. A spring-loaded
pressure relief valve also could be incorporated into the brush
structure for this purpose.
A somewhat different solution to this problem is shown in FIG. 5.
Thus, a gasket 65 that circumscribes the shank of the filler cap
has a small passageway 66. The passageway 66 establishes free gas
communication between the reservoir and the atmosphere. The
dimensions of the passageway are so small, however, that the more
viscous bath oils and the like are not able to flow out of the
handle in the opposite direction.
Relying on essentially the same physical principle, FIG. 6 shows a
filler cap 67 that has a gas or air passageway 70 formed in the
center of the shank. As hereinbefore mentioned, air flows through
this tiny hole and into the reservoir, while the more viscous
liquids within the reservoir can not flow the other way. For
manufacturing simplicity, it may be preferable to shape the
passageway 70 in a slightly conical form.
In order to store the scrub-brush when it is not in use, FIG. 7
shows a suitable wall bracket 71. The bracket 71 has a flat,
circular portion that is erected flush with a wall. Because
mountings for this device will frequently be placed in tile bath
rooms, a screw 72 at the center of the circular bracket 71 joins
the bracket to the wall at a cemented point that is common to four
tiles. In this way, the screw 72 can easily penetrate and remain in
the cement without resorting to tile drills or other special
equipment. Two protruding ears 73 and 74 extend away from the wall
and the bracket in order to engage and support the lower edge of
the scrubbing head 31 (not shown in (FIG. 7).
The flexible hose 10 can be attached to a water tap through a
temporarily applied rubber sleeve or made a part of a more
permanent installation. In this last regard, a Tee connection at
the shower nozzle that diverts water either in whole or in part
from the shower proper to the brush can be installed through a
simple manipulation or threaded couplings.
* * * * *