US1457122A

US1457122A - Shock absorber

Info

Publication number: US1457122A
Application number: US373635A
Authority: US
Inventors: Albert C Ree
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-04-13
Filing date: 1920-04-13
Publication date: 1923-05-29
Anticipated expiration: 1940-05-29

Description

May 29, 1923.

A. c. REE

SHOCK ABSORBER Filed A'Dril 13 1920 Patented May 2 9, I 1923.

UNHT I: T

ALBERT C. REE, O1 LIBERTYVILLE, ILLINOIS.

SHOCK ABSORBER.

Application filed April 13, 1920. Serial No. 373,835.

To all whom it may concern:

Be it known that I, Ausnn'r C. REE, a citizen of the United States, and resident of Libertyville, in the county of Lake and State of Illinois, have invented certain new and useful Improvements in Shock Absorbers; and I do hereby declare that the following is a full, clear, and exact description thereof.

This invention relates to shock-absorbers, particularly of the type used in automobiles or the like having spring suspension.

The object of the invention is to rovide a shock-absorber,that will permit'the ody of the vehicle to descend freely to a certain distance, but to check the return movement of the same thereby avoiding the breaking of the vehicle spring or springs at the time when the greatest liability of such breakage occurs.

A further object of the invention is to provide means whereby movement ,of certain parts of the shock-absorber toward each other are severely restrained during the latter art of a long movement, and yet unrestrained on the first part of such movement, as well as on short movements.

In the drawings 2- Figure 1 is a longitudinal vertical section of a shock-absorber, embodying this invention,

Figure 2 is a section taken on the line 22 of Figure 1, showing a. plan view of the piston head.

Referring to the drawings, the numeral 1 designates a hollow cylindrical container hearing a closed head 2 and a detachable en 3.

Within the container 1 is a piston 4 which is detachabl extending through a suitable stufiing box in the detachable end 3 of the container.

The container is filled with air and a light non-congealable oil or its equivalent in such proportions that the volume of air therein is equal to the displacement of the piston and piston rod when in the top of the container.

The container and piston are adapted to be connected to the frame and axle, respectively, of an automobile or the like by any suitable means.

The piston 4 is provided with one or more fluid passages 6 extending therethrough which are enlarged at their lower ends to accommodate suitable check valves 7, opening when the piston moves in an upward path and closing when the piston moves in a connected to the piston rod 5,

downward path. Also, extending through the piston is one or more fluid by-passes 8, which are opened at all periods of operation, with the exception of the period hereinafter described.

Supported from the head 2 of the container and within same, is the plate 9, which is designed to close the openings 6 and 8 in the piston when the piston has moved in a suitable distance toward the container head.

The plate 9 is resiliently supported from the container head by an. expansion spring 10, one end ofwhich engages the bent up fingers 11 of the plate 9 and the other end encircles the narrow neck of the downwardly projecting stud 12, made integral with the container head.

Assuming the parts to be in position as shown in Figure 1, and a short movement of the body takes place, causing the piston to move toward the container head when this movement takes place, the valves 7 open, allowing the fluid to pass through the passages 6, thus permitting the piston to move unrestrained. When the reaction of the vehicle springs takes place, the valves in the piston automatically close, holding the vehicle springs, in suspension, but allowing them to gradually reach their normal position as the fluid flows past the piston through the bypasses 8.

When a long movement occurs, the piston moves the same as it did'in the short movement, but in this instance it continues unrestrained in its movement until it strikes the plate 9, which closes all passages within the piston. Furthermovement of the piston compresses the air within the container, thereby reducing the shock, and at the same time severely restraining its movement. When reaction of the vehicle springs takes place the action is the same as described in the short movement.

From the foregoing, it will be apparent that I have shown and described one specific form of my invention, but it is to be understood that I do not limit myself to the precise details of construction, as modifications and variations may be made therein without departing from the spirit of the invention.

Having thus fully described my invention,

fluid passages, means for closing certain of container head, and said late adapted to said passages on the down stroke of the pisclose all passages within t e iston on the ton, a plate suspended within said container extended upward movement 0 the same. and provided with integral fingers engaging In testimony that I claim the foregoin I 5 its su porting means, said means comprising have hereunto set my hand at Llbertyyi e, a. ooi ed spring the other end of winch e 1n the county of Lake and State of Illinois. gages a projection formed integral with the ALBERT C. REE.