Class 92/133 - Adjustable

Subclass of Class 92 - Expansible chamber devices
Definition: Apparatus in which the amount of force exerted by said force
No. of patents: 21
Last issue date: 04/11/2006

Number	Title	Issue Date
7025343	Adjusting method and adjusting mechanism for remedying the coil pitch tolerance and fatigue deformation of adjustable helical spring In an adjusting method for remedying the coil pitch tolerance and fatigue deformation of an adjustable helical spring, an adjusting mechanism is mounted at one end of the casing for the adjustable helical spring for changing the precompression or the pretension of t...	04/11/2006
6467393	Zeroing device for a hydrostatic piston/cylinder unit A zeroing mechanism for a hydrostatic piston/cylinder unit (1), has an actuating piston (2) that can be moved from a zero position N into at least one deflected position A and can be returned to its zero position N by a zeroing force, the zeroing force be...	10/22/2002
5988043	Modulator adjustment device A modulator adjustment device (10) including a generally cylindrical body (36, 37) having cavities formed at opposite ends thereof and a dial wheel (32) extending radially outwardly and circumscribing the body, a rotatable coupling (48) disposed in the ca...	11/23/1999
5953915	Device for time-dependent control of the duration of regeneration of an air dryer An improved adjustability and functional reliability of a device for time-dependent control of a duration of regeneration of an air dryer including a piston, which is longitudinally guided, displaceably counter to a resistance, in a cylinder by the force ...	09/21/1999
5492050	Pneumatic actuator with rack and pinion assembly A pneumatic actuator including a first housing having a first cylinder formed therein, a first piston slidably positioned within the cylinder of the first housing, a first rack connected to the first piston and extending therefrom, a second housing having...	02/20/1996
5392807	Fluid pressure actuated flow control valve A valve of the type in which a movable valve member is spring loaded to a normally closed position and operated to an open position by a fluid pressure responsive actuator and wherein the valve closing spring and pressure responsive actuator are enclosed ...	02/28/1995
4936554	Device for automatically raising and lowering of mobile elements of chairs and beds A device raising and lowering bed or chairs including a pneumatic spring associated with each mobile element of the chair or bed and placed to allow, by its extension, raising of this mobile element. Each pneumatic spring is associated with a weight actin...	06/26/1990
4907496	Spring force actuators A spring force actuator comprising a housing, an output member axially moveable in the housing, a spring captive between the member and the end wall of the housing. The actuator further comprises an axially located screw-threaded wind-off element operable...	03/13/1990
4836757	Pressure actuated movable head for a resonant reciprocating compressor balance chamber The present invention relates to a resonant piston compressor in which a double-sided piston reciprocates within a cylinder and defines a valved compression space on one side of the piston and a balance chamber on its other side. The invention further inc...	06/06/1989
4765229	Portable vacuum pump for desoldering purposes A portable vacuum pump for desoldering applications has a hollow cylindrical barrel forming a vacuum cylinder containing a plunger. The pump has a trigger housing containing a single compression spring. The spring is mounted outside the barrel. No separat...	08/23/1988
4750870	Pressure actuated movable head for a resonant reciprocating compressor balance chamber In a resonant piston compressor utilizing a balance chamber to provide a gas spring effect for use in a heat pump arrangement and the like, an adjustable balance cylinder head which adjusts so as to increase or decrease the balance chamber volume so as to...	06/14/1988
4724675	Control device for a twin master cylinder Control device (10) for a twin master cylinder (18) of the type with two master cylinders situated side by side and parallel to one another; the device (10) is capable of being positioned between an actuating pedal (12) and pistons (26, 26') of the master...	02/16/1988
4667574	Actuator for movement of a tool and a tire carcass transfer device utilizing the actuator A tire carcass transfer device (111) having a hollow housing (112) for receiving a tire carcass (160), a plurality of flexible cups (21) arranged in a circular band around the housing, vacuum means connected to the cups (21) and fluid powered actuators (1...	05/26/1987
4651626	Semi-rotating single acting pneumatic actuator The actuator has a plurality of springs in a circular array, for effecting return movement of two pistons slidable in a bore in the actuator body and each having a rack portion meshing with a pinion on an output shaft extending perpendicularly of the axis...	03/24/1987
4374487	Pilot with cantilevered spring A fluid actuated pilot assembly employing a cantilevered spring member which is mounted to apply a force to a sensing piston in opposition to the force applied by the sensed fluid pressure. Upon the occurrence of the pressure of the fluid being sensed exc...	02/22/1983
4352320	Single-acting operating cylinder A single-acting operating cylinder assembly includes a cylinder and piston of rectangular cross section and a spring arrangement for initially forcing the piston into one operating position. The piston has an axial recess with transverse end walls. A stop...	10/05/1982
4260128	Valve actuators and combined valves and actuators A valve actuator has at least one piston in a cylindrical chamber that has a segmental skirt provided with transverse teeth on its chordal face meshing with lengthwise teeth on the hub of a rotor extending diametrically through the chamber with one rotor ...	04/07/1981
4141676	Pump for soil fumigant A method and apparatus are shown for use in mixing agricultural chemicals for placement through an applicator onto the soil. A fumigant is added to anhydrous ammonia in measured amounts as the ammonia is being injected in the field from the applicator und...	02/27/1979
4067447	Safety device for cranes An anti-two block system adapted to be used with a crane having a sensor device mounted with the boom point of the crane in communication with a hoisting actuator mechanism such that the sensor device effects movement of the hoisting lever of the crane to...	01/10/1978
3976400	Gradient pump apparatus A high pressure positive displacement gradient pump for two flowable materials utilizing two reciprocating pistons with the pair of pistons pumping in an overlapping reasonably pulse free manner. The gradient of the two flowable materials is created by ad...	08/24/1976
3943830	Actuating force generating device An actuating force generating device has a multi-stage cylinder body consisting of a plurality of cylinders having different diameters and arranged in series; a plurality of pistons slidably fitted in the cylinders, respectively; fluid ports each provided...	03/16/1976

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Class 92/133 - Adjustable