Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7040216 | Hydraulic motor A hydraulic motor is equipped with an output shaft (2), a cylinder (4) arranged around the output shaft and receiving a plurality of pistons (6) expanding with the fluid pressure, a diagonal plate (7) that contacts the plurality of the ex... | 05/09/2006 |
| 6752066 | Device for controlling the oscillation of the arm of a handling equipment of the swingable lever type A handling equipment of the swingable arm type comprises a double acting cylinder within whose chamber a main piston is sealingly mounted, which is slidable owing to the selective delivery of fluid under pressure at opposite zones of the chamber, which is connected ... | 06/22/2004 |
| 6336323 | Brake for a hydraulic motor In a brake (53) for a hydraulic motor (10), a braking piston (66) is added that can move toward and away from fixed friction discs (54) and rotating friction discs (55). A braking passage (73) leads a high-pressure fluid into the braking piston (66) to pr... | 01/08/2002 |
| 5520091 | Hydraulically coupled position locking device for surgical tables An auxiliary mechanical position locking device is coupled to the hydraulic system that motivates a double acting piston for positional control of surgical tables. The combination of hydraulic coupling and mechanical locking maintains positional stability... | 05/28/1996 |
| 5365828 | Pneumatic linear drive comprising a locking mechanism for end positions A linear drive is disclosed comprising a single-acting pneumatic piston cylinder unit, at least one spring which acts against the pneumatic force and loads the piston rod in the direction of one end position, and one form-locking pneumatic locking mechani... | 11/22/1994 |
| 5193431 | Device for operation of a sliding door member A device for operation of a sliding door member, the device being movable between an open position in which the door member is open and a closed position in which the door member is closed. The device includes a pneumatic cylinder having an actuating pist... | 03/16/1993 |
| 4899644 | Fluid cylinder assembly for robot actuators A fluid cylinder assembly comprising a fluid cylinder having ports disposed at opposite ends thereof communicable with a source of fluid under pressure, a piston disposed in said cylinder having a first rod section extending through an end of said cylinde... | 02/13/1990 |
