US2119419A - Locking means for fluid motors - Google Patents
Locking means for fluid motors Download PDFInfo
- Publication number
- US2119419A US2119419A US80643A US8064336A US2119419A US 2119419 A US2119419 A US 2119419A US 80643 A US80643 A US 80643A US 8064336 A US8064336 A US 8064336A US 2119419 A US2119419 A US 2119419A
- Authority
- US
- United States
- Prior art keywords
- cylinder
- piston
- locking
- locking means
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/09—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by means for actuating valves
Definitions
- This invention relates to remote control apparatus of the kind in which liquid pressure in one )1 more pipe lines serves as the medium for transmitting movement from a master cylinder to a slave cylinder unit.
- the present invention provides a liquid pressure remote control system having a device for mechanically locking the setting of the member actuated by the motor cylinder unit, said system being characterized by the fact that said locking device is automatically released concurrently with the passage of pressure liquid from the master cylinder into the motor cylinder, said release being effected in the motor cylinder itself or in an auxiliary cylinder supplied in common therewith from the master cylinder.
- the invention further provides an improved system which is characterized in that the locking device is effectual at any setting of the slave cylinder unit, and is automatically released by pressure liquid forced into the slave cylinder unit by the master cylinder.
- the invention provides a double-acting motor cylinder unit for a two pipe line remote control system, the cylinder of said unit being divided by a piston into two. compartments, each of which latter is bounded by a pressure-responsive member serving, when liquid is forced into either of the working compartments,
- the motor cylinder unit may be provided with a locking device which acts as a one-way clutch, and in a particular example as applied to a double-acting slave cylinder, a pair of one-way locking devices are provided and are adapted to work in opposition, thus in effect locking the setting of the motor cylinder unit against unwanted movement in both directions.
- a locking device which acts as a one-way clutch, and in a particular example as applied to a double-acting slave cylinder, a pair of one-way locking devices are provided and are adapted to work in opposition, thus in effect locking the setting of the motor cylinder unit against unwanted movement in both directions.
- Figure 2 is a fragmentary sectional plan of the I 4 l4, the position of which is governed by an arm l6 connected with an operating member indil cated at 25 and carried by a spindle 22.
- the piston element I4 passes to the left expelling liquid under pressure from the master cylinder l2 through the pipe line 48 to the remotely placed motor cylinder 50.
- the pipe line 49 serves to transmit liquid expelled from the right hand side of the motor cylinder back to the other master cylinder i3, within which, of course, the piston element I4 is receding.
- locking means should be provided for the rod 52 so that forces applied thereto, other than operating forces, will not be able to alter the setting of said rod 52, and for'this purpose a locking means is provided at each end of the motor cylinder unit 50.
- the left hand locking means is shown in section in Figure 1, but it will be understood that 3 the right hand locking means is exactly similar in construction, although it is, of course, adapted to i work in the opposite direction.
- the working space 58 is bounded by an auxiliary cup washer or piston 59 which bears against a sleeve BD'haVing a circumferential series of perforations for the guidance of a corresponding number of balls 6
- These balls arenormally urged by a spring 65 into contact with the interior frusto-conical surface of a wedge ring 62, which is held in position by means of a gland nut 63 and which serves to support a stop washer 64 cooperating with a cir--- cumferential flange formed upon the sleeve 60. It will be seen that any tendency to move the rod 52 to the right will be counteracted by the wedging of the balls of theleft hand locking means.
- a motor unit comprising a cylinder, a main piston dividing said cylinder into two working spaces, an auxiliary piston within said cylinder,-locking means associated with the auxiliary piston and adapted to lock the piston rod relatively to the cylinder in any position, said auxiliary piston first being moved by liquid forced into the cylinder, thus releasing the locking means and enabling the main piston to move under the influence of the liquid.
- a motor unit comprising a cylinder, a main piston dividing'said cylinder into two working spaces, an auxiliary piston in each of said spaces, and a pair of opposing one-way locking devices each adapted to be rendered inoperative by one of the auxiliary pistons when liquid under pressure enters the corresponding working space, thus enabling the main piston to be moved by said liquid.
- a motor unit comprising a cylinder, a-main piston dividing said cylinder into two working spaces, 'an auxiliary piston bounding each of said spaces, and a one-way wedge device associated with each of the auxiliary pistons, each of said wedge devices comprising a locking element engaged within a chamber bounded by axially converging walls carried by the cylinder and piston rod respectively, and a spring which urges the locking element towards a jamming position while the auxiliary piston is arranged to press the locking element in the reverse direction, so as to release the wedge device when liquid is forced under pressure intothatworking space bounded by the respective auxiliary piston.
- a motor unit comprising a cylinder, a main piston dividing said cylinder into two working spaces
- a piston rod extending coaxially through the cyI inder and attached to the main piston, an aux iliary piston fitted at each end of the cylinde and formed with a circumferential series of hole: balls located in the holes and engaging the pis ton rod at their inner parts, a tapering wall upo: the cylinder which wall is engaged by the oute parts of the'balls, and a spring urging the am: iliary piston so that the balls tend to jam be tween the tapering wall and the piston rod.
- a motor unit comprising a cylinder, a main pis ton dividing the cylinder into two working space: a piston rod carrying the piston, and lockim means disposed within the cylinder, said look ing means consisting of two separate one-wa: frictional wedge devices in which the resistanc1 to .movement increases as the external force tending to overcome the locking increases, S8.i( wedge devices being arranged in opposition anc acting between the cylinder and the piston roc at any setting of said piston rod, each of saiC wedge devices being released by the entry 01 liquid under pressure into that side of the cylinder causing movement of the piston rod in the direction normally prevented by said wedge device.
- a motor unit comprising a cylinder, a main piston within said cylinder, an, auxiliary piston bounding the working space within said cylinder and locking means for preventing movement of the main piston, said locking means being of the form in which the locking effect, which takes place automatically at any position of the main piston, increases as the external force tending to overcome said locking effect increases, and the locking means being connected with the auxiliary piston so that movement of said auxiliary piston under the action of liquid pressure withi the cylinder releases the locking means.
- a motor unit comprising a cylinder, a main piston within said cylinder, an auxiliary piston bounding the working space within said cylinder, and locking means for preventing movement of the main piston, said locking means comprising a one-way wedge device in which the locking effect, which takes place automatically at any position of themain piston, increases as the external force tending to overcome said locking efiect increases, and said locking means being connected with the auxiliary piston" so that movement of said auxiliary piston under the action of liquid pressure within the cylinder releases the locking means.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
Description
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US80643A US2119419A (en) | 1935-08-29 | 1936-05-19 | Locking means for fluid motors |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US38460A US2126310A (en) | 1934-09-05 | 1935-08-29 | Transmitter for fluid pressure systems |
US80643A US2119419A (en) | 1935-08-29 | 1936-05-19 | Locking means for fluid motors |
Publications (1)
Publication Number | Publication Date |
---|---|
US2119419A true US2119419A (en) | 1938-05-31 |
Family
ID=26715227
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US80643A Expired - Lifetime US2119419A (en) | 1935-08-29 | 1936-05-19 | Locking means for fluid motors |
Country Status (1)
Country | Link |
---|---|
US (1) | US2119419A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2455439A (en) * | 1945-02-17 | 1948-12-07 | Herbert E Page | Fluid jack with ram locking means |
US2769430A (en) * | 1953-08-31 | 1956-11-06 | Gen Motors Corp | Actuator with dual locking means |
US3151525A (en) * | 1963-02-28 | 1964-10-06 | Berg Airlectro Products Co | Brake actuator and setting means therefor |
US3267819A (en) * | 1961-07-05 | 1966-08-23 | Bendix Westinghouse Automotive | Brake mechanism with mechanical lock |
US3353455A (en) * | 1965-09-20 | 1967-11-21 | Westinghouse Air Brake Co | Fluid pressure motor |
US3974746A (en) * | 1975-05-05 | 1976-08-17 | Senobio Campos | Mono-seal pump piston |
-
1936
- 1936-05-19 US US80643A patent/US2119419A/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2455439A (en) * | 1945-02-17 | 1948-12-07 | Herbert E Page | Fluid jack with ram locking means |
US2769430A (en) * | 1953-08-31 | 1956-11-06 | Gen Motors Corp | Actuator with dual locking means |
US3267819A (en) * | 1961-07-05 | 1966-08-23 | Bendix Westinghouse Automotive | Brake mechanism with mechanical lock |
US3151525A (en) * | 1963-02-28 | 1964-10-06 | Berg Airlectro Products Co | Brake actuator and setting means therefor |
US3353455A (en) * | 1965-09-20 | 1967-11-21 | Westinghouse Air Brake Co | Fluid pressure motor |
US3974746A (en) * | 1975-05-05 | 1976-08-17 | Senobio Campos | Mono-seal pump piston |
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