Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 7370570 | Fluid pressure cylinder A fluid pressure cylinder can apply a fastening force to an axially movable reciprocating rod. A reciprocating rod 13 is mounted in a case main body 10 so as to be reciprocable in a forward direction and a backward direction, and two lock units 16 | 05/13/2008 |
| 7299739 | Hydraulic cylinder A fluid pressure cylinder has a piston rod 18 fixed to a piston 26 and projecting outside a cylinder body 23. A lock surface 43 inclining to a radial direction of the piston rod 18 is formed in an engagement member 31 provid... | 11/27/2007 |
| 7249659 | Fluid actuator An actuator responsive to fluid signals to retract and extend a piston. The actuator includes a cylinder and a pressure piston carried inside the cylinder. Also included is a shaft, and a rod connected to the pressure piston. The actuator further includes a first po... | 07/31/2007 |
| 7240605 | Actuator with a variable run The invention concerns a pneumatic and/or hydraulic actuator. The pneumatic and/or hydraulic actuator is one in which the run of a driving shaft, which is pneumatically operated by a piston, can vary on the basis of the insertion in the body of the actuator or at le... | 07/10/2007 |
| 7216581 | Piston locking actuator A locking actuator may be locked in an extended position. A piston with a first and a second end defines a recess that originates proximate to the first end. A strut is adapted to at least partially nest within the recess and the strut is adapted to hold at least on... | 05/15/2007 |
| 7195197 | Techniques for controlling a fin with unlimited adjustment and no backlash A fin control assembly includes a housing, an arm configured to couple to a fin and to steer the fin relative to the housing, and a locking member disposed within the housing. The locking member is configured to (i) lock the arm in a substantially fixed state to inh... | 03/27/2007 |
| 7152456 | Automated robotic measuring system An automated coordinate measuring system comprising a measuring arm used for acquisition of geometry data that incorporates an exoskeletal structure resilient to physical perturbations including thermal changes and vibrations which may affect coordinate data acquisi... | 12/26/2006 |
| 7125058 | Locking device with solenoid release pin A locking device with a solenoid release actuator includes a housing, a plunger axially slidable within the housing, a biasing member for biasing the plunger in a first direction, one or more locking balls, and the locking balls disposed in an aperture in the housin... | 10/24/2006 |
| 7108108 | Rod clamping device A device for clamping a rod to stop axial and/or rotative movement between the rod and the device. The device includes pressure and clamp units, the clamp unit having a bushing fixed therein and provided with a radially resilient center section normally sized to per... | 09/19/2006 |
| 6782799 | Double acting hydraulic cylinder with axial locking device A double-acting hydraulic actuator with an axial locking device has a cylinder chamber defined by two coaxial cylindrical walls of different diameters interconnected by a frustoconical wall. A guide piston sliding in the smaller-diameter cylindrical wall is fixed to... | 08/31/2004 |
| 5746055 | Hydraulic tilt and trim control for marine propulsion A hydraulic tile and trim mechanism for a marine outboard drive that provides a compact assembly and which ensures that contaminants which may enter the hydraulic fluid can accumulate in the fluid reservoir and will not be circulated by the fluid pump. Th... | 05/05/1998 |
| 5727442 | Safety device at hydraulic piston-cylinder units The invention relates to a safety arrangement on hydraulic piston-cylinder units. In particular for monitoring locking cylinders, e.g., of operating tools mounted on a grab bucket boom. A sensor for monitoring the piston position is provided on the piston... | 03/17/1998 |
| 5349894 | Locking hydraulic actuator A method for locking a hydraulic actuator in a predetermined position and a locking hydraulic actuator are provided. The method includes the steps of supplying hydraulic fluid to a forward chamber in the hydraulic actuator, transferring the hydraulic flui... | 09/27/1994 |
| 5341722 | Positioning apparatus used for machine tools etc. A positioning apparatus can perform high-accuracy positioning in a short time without a Curvic (trademark) or positioning coupling. With provision of a hydraulic motor having a rotary shaft fixed to a turret head and a hollow type rotary encoder for detec... | 08/30/1994 |
| 5097748 | Hydraulic locking cylinder with throttled supply of fluid during unlocking stage A hydraulic cylinder that locks into position has a housing (1) with at least one pressure connection (7) and a piston (3) and rod (6) that travel tight in an out of the housing. The locking mechanism comprises a piston (11) that rests against a spring (3... | 03/24/1992 |
| 4997160 | Ball lock control valve actuation plunger - hydraulic type An ancillary hydraulic driven ball lock control valve actuation plunger cooperates with a piston for displacing a timer valve. An annular locking plunger is pressurized by fluid at a control port, the sliding motion of the plunger controlling the position... | 03/05/1991 |
| 4989828 | Ball lock control valve actuation plunger-mechanical type An ancillary mechanically driven ball lock control valve actuation plunger cooperates with a piston for displacing a timer valve plunger. An annular locking plunger is pressurized by fluid at a control port, the sliding motion of the plunger controlling t... | 02/05/1991 |
| 4854218 | Piston and cylinder unit The invention relates to a piston and cylinder unit whose piston rod is provided with a rack extending along it. The rack is in mesh with a ring of teeth (such as the teeth of a toothed belt or the teeth of a gear wheel) adapted to revolve about one axis ... | 08/08/1989 |
| 4785712 | Hydraulic operating apparatus for electric circuit breaker A hydraulic operating apparatus in which a differential piston is used as a drive unit, and in which the differential piston is driven by applying a high pressure fluid on a large piston face side through a hydraulic pressure control device for controllin... | 11/22/1988 |
| 4784037 | Locking apparatus for gate valves A locking apparatus for fluid operated valves having a piston connected to the valve actuator which moves in response to applied pressure within a cylinder housing having a cylinder head, a catch block is secured to the piston, and the cylinder head incor... | 11/15/1988 |
| 4779513 | Pneumatic cylinder with rod braking and decelerating mechanism A pneumatic cylinder device having a decleration mechanism. The pneumatic cylinder device has a pneumatic cylinder including a cylinder accomodating a piston movable in the cylinder in response to supply and discharge of compressed air and having a connec... | 10/25/1988 |
| 4742758 | Self-locking, fluid operated actuator The present invention relates to a fluid-operated actuator, constituted by a cylinder and by a double-effect piston, provided with a device suitable to automatically locking the same piston at the end of its working stroke.... | 05/10/1988 |
| 4690033 | Self actuating locking and unlocking arrangement and method for reciprocating piston type actuators A method and arrangement for reciprocating a piston in a cylinder of a fluid actuated actuator between one and another alternate positions, and using the piston fluid actuator fluid to move a lock member from a first position to a second position to lock ... | 09/01/1987 |
| 4526086 | Piston-cylinder assembly A piston-cylinder assembly for displacing a load through a long stroke consists of a rod, a piston slidable on the rod and by fluid pressure the piston is clamped to the rod, and a cylinder in which the piston is contained. By clamping the piston to the r... | 07/02/1985 |
| 4524676 | Hydraulic cylinder locking device A hydraulic cylinder having a locking device disposed in either, or both head ends which attach to the cylinder, has a piston reciprocally movable within a piston chamber formed in the cylinder. A stud member having a groove portion and a stud portion, se... | 06/25/1985 |
| 4515065 | Automatic centering servo actuator A high resolution servo actuator is responsive to an electronic control or manual control. An output shaft having fast response and infinite positioning for stroking a manual servo valve on a pump is rotated by hydraulic power. A set of hydraulic working ... | 05/07/1985 |
| 4339984 | Drive, particularly for an industrial manipulator The drive comprises an air-operated driving unit imparting either a linear or a rotary motion to the working member of a manipulator and, at the same time, driving the rotor of an electromagnetic brake in accordance with displacement of the working member... | 07/20/1982 |
| 4131189 | Safety apparatus for operating clutch actuated, movable ram machines To permit safe operation of clutch actuated moving ram machines, especially when the operator is to be permitted to "float" the ram, the operating linkage to the clutch is formed with a connection which requires input motion of the linkage in predetermine... | 12/26/1978 |
| 4106390 | Pneumatic linear actuator A digitally controllable pneumatic linear actuator in which a moving piston driven by compressed air is initially decelerated by the pressure of compressed air applied to the both sides thereof in the course of its advancing movement toward a predetermine... | 08/15/1978 |
| 4102248 | Protective system for pneumatically operated devices This disclosure relates to a system for protecting pneumatic cylinders and diaphragm valves against failure of both electrical and pneumatic supplies. In the event of a failure of the air supply, the loss of air pressure is detected and all drives are loc... | 07/25/1978 |
| 4050674 | Hydraulic jack A hydraulic jack comprising a cylinder, a piston slidable relative to the cylinder, pump means to supply pressurized fluid to the base of the piston, a seal between the piston and the cylinder, means for limiting the stroke of the piston in the cylinder, ... | 09/27/1977 |
| 4016803 | Servo device The invention relates to a servo assembly having a stationary part including a housing, a movable member and a servo motor. Of primary interest is the stopping mechanism which includes a stop unit on the movable member and two pressure operated, verticall... | 04/12/1977 |
