US2260853A

US2260853A - Fluid motor

Info

Publication number: US2260853A
Application number: US365493A
Authority: US
Inventors: Henry C Hueber
Original assignee: Trico Products Corp
Current assignee: Trico Products Corp
Priority date: 1940-11-13
Filing date: 1940-11-13
Publication date: 1941-10-28
Anticipated expiration: 1958-10-28

Description

oct. 28, 1941. Q HUEBER 2,260,853

FLUID MOTOR Filed Nov. 13, 1940 ATTO NEYs 'Patented oct. 2s, 1941 UNITED sTATEs lPATENT OFFICE'.v

FLUID MOTOR Henry C. Hueber, Snyder, N. Y., assigner to Trlco Products Corporation, BuHalo. N. Y.

Application November 13. 1940, Serial N0. 365,493

9 Claims.

'I'his invention relates to a uid motor and especially to a motor which is operated by suction. such as is found in the present day windshield cleaner installation on motor vehicles. In such installation a motor chamber at one 'side of its pistonfis connected to a source ci suction such as the intake manifold of the vehicle engine and its opposite side connected to the atmosphere for creating a pressure differential suiiicient to move the piston in one direction and upon the completion of vthis stroke ofthe piston the pressure diiferential is reversed, as by means of an automatic valve mechanism so as Vto eiect a reverse stroke oi the piston. the valve compartment, containing the automatic valve mechanism, considerable noise is engendered which, in the quiet operation oi' the vpresent day automobile, is quite noticeable and therefore undesirable. Furthermore, foreign particles are'frequently inhaled by the motor which cause undue wear and eventuallyimpair the efficiency of the motor.

The object of the present invention is to provide practical means for illtering the air as it enters the motor as well as eliminating any noise incidental to the passage oi the iniiowing air.

The invention further resides in a construction by which the filtering means are rendered selicleaning and so disposed as to be readily acces,

sible for repair or adjustment.

In the drawing:

Fig. 1 is a side elevation of a well-known type of windshield cleaner motor constructed in accordance with the present invention and having the valve chamber cover removed;

Fig. 2 is an end elevation of the motor;

Fig. 3 is a fragmentary transverse sectional view through the motor; and

Fig. 4 is a cross sectional view through the valve chamber taken about on line 4-4 of Fig. 2.

Referring more particularly to the drawing, the numeral I designates a motor housing having a chamber 2 in which operates a piston 3 which is iixedly carried by a shaft I to oscillate therethrough a double crank arm 5. The motor is provided with a nipple 6 designed for being connected by a conduit to a suitable source of suction. This nipple communicates with a suction supply port 1 in avalve seat 8 which port is connected by a valve 9 iirst to oneV and then the -other of a pair of chamber' ports I0 also in the valve seat 8. The two chamber ports communicate with the motor chamber 2 at respectively opposite sides oiy the .vane-like piston 3, the unconnected one of the chamber ports being uncov.

. restricting orifice, as shownvin Patent No. 2,032,-

As the outside atmosphere enters 319 granted February 25, 1936, to E. C. Horton and H. Hueber, or by slippage beneath the chamber closure which has produced a wheezing or whistling noise to the annoyance of the occupants of the vehicle. y

In accordance with the present invention thel iniiowing air stream is caused to pass ilrst through a iibrous or porous lter body I4, such as felt, which is disposed within a iilter chamber I3 provided on the outside of the motor housing. The illter chamber is located adjacent the valve chamber. the same being partitioned therefrom by a wall I5. A wall vI6 forming an extension of the partition I5 lies in opposition to the side wall I1 of the motor housing and defines the chamber I3 while the ends of such filter chamber are closed by walls I8 from opposed portions of the side wall. This leaves the chamber open only at its lower side through which the filter body is inserted. The partition wall is Iformed with one or more openings I9 through which the air enters the valve chamber after first passing through the lter. The overhanging wall I6 forms an oiIset extension of the floor orbottom wall of the valve chamber to provide support for the post 20 on which the pressure plate 2| of the valve mechanism is suspended, the valve mechanism depicted being similar to that disclosed in the aforesaid patent. A cover plate 2| encloses the automatic valve mechanism, being secured in position by a pair of screws 23 engaging in threaded openings 24.

One or more retaining pins 25 are passedI downwardly through ears 26, formed on the inner face of the chamber wall to hold the filter body under compression and against freely expanding outwardly beyond the confines of chamber I3. By reason of the tendency to expand, the lter body subjects the pins to a lateral pressure suillcient to cause the pins to bind upon their supporting ears 26 against accidental dislodgement therefrom when the valve chamber cover 2| is removed, it being noted that the latter when in place overlies the ear openings.

By reason of the novel formation and location o1' the lter chamber beneath a portion of the valve chamber, the iilter is protected while at the same tlmea large surface area of the nlter Y spirit of the invention claimed.

What is claimed is:

1. A iiuid operated windshield cleaner motor having a body with an exteriorly provided valve compartment the oor of which has one portion offset outwardly from the exterior wall of the motor body to overhang the same in spaced relation and form therewith -a chamber separated from the compartment by a partition, the partition having an air opening, and an air lter body disposed in the chamber to filter the iniiowing air.

2. A suction operated motor having a casing, an upstanding wall on the outer side o the casing dening a valve compartment, a cover for the compartment, a pair of opposed end walls forming with the upstanding wall a chamber,

the latter open on one side to the outside atmosphere and having air communication with the compartment, and a porous air lter body confined in the chamber between the endwalls.

3. A suction motor having a casing with an exteriorly arranged compartment, automatic valve mechanism in the compartment, a wall of the compartment being provided with an air inlet opening, an open chamber about the air inlet opening, and a brous body inserted in the chamber for iiltering the air and dampening the noise of passing through the air inlet opening, said brous body being exposed through the open chamber for easy dislodgment of foreign matter therefrom.

4. An air motor having a casing with an exteriorly arranged valve compartment for housing the automatic valve `mechanism,v a nlter chamber adjoining the compartment and separated therefrom by an angular wall, said chamber having restricted air communication with the compartment, a lter body arranged in the chamber about the angular wall and over the air communication, and means for securing the filter body against the angular wall.

5. An air motor having a casing with a valve compartment, the latter-having an outwardly oifsetV bottom wall dening with the casing a chamber which is open at one side, and a lter body disposed in the chamber, said chamber having air ow communication with the compartment.

6. An air motor having a casing with a valve compartment, the latter having an outwardly offset bottom wallvdefining with the casing a chamber which is open at one side, a lter body disposed in the chamber, said chamber having `air iiow communication with the compartment,

and a retaining pin passed downwardly through the bottom wall into engagement with the lter body to hold the latter against. displacement through the open side of the chamber.

-7. A iluid motor having a 'casing with an exteriorly arranged valve compartment for its automatic valve mechanism, the compartment having a marginal portion overhanging the casing wall in outwardly spaced relation to dene therewith a chamber, a vfibrous body inserted in the chamber, the latter having air communication with thevalve compartment, and means for retaining the fibrous body in its chamber.

8. An air motor having a casing with a valve compartment, the latter ,having an upstanding angular wall and opposed end walls defining with the casing a chamber which is open at one side, and a lter body disposed in the chamber, said chamber having air iiow communication with the compartment.

9. An air motor having a casing with a valve compartment, the latter having an outwardly offset bottom wall dening with the casing a chamber which is open at one side, an expansible lter body disposed in the chamber, said chamber having' air flow communication with the compartment. and a retaining pin slidably passed downwardly through an opening in the bottom wall into engagement with the iilter body to hold the latter under compression whereby to bind the pin against displacement.

. HENRY C. HUEBER.