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Patent No. 5421089

Fork With Timer

A fork with timer for providing a cue to a user after an elapsed period of time for indicating that another bite of food using the fork may be taken.

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Class 91/489 - Valved


Subclass of Class 91 - Motors: expansible chamber type
Definition: Apparatus in which there is provided valve means in addition
No. of patents: 20
Last issue date: 05/06/2008


NumberTitleIssue Date
7367735Hand-held instrument having variable contour grip
A hand-held instrument has a variable contour grip, a main body having a grip-attaching portion, and a tubular grip body made of a resilient material and mounted around the grip-attaching portion of the main body for undergoing rotation relative thereto. Each of an ...
05/06/2008
7172394Saddle bearing liner for axial piston pump
A saddle bearing liner (30) for a variable displacement axial piston pump (10) includes two axially-spaced apart bearing surfaces (62, 64) with an offset central section (54) integrally joining them. A hollow projection (80) extend...
02/06/2007
7124677Swashplate assembly
A rotary hydraulic machine has a swashplate adjustable by an actuator. The swashplate has a part cylindrical bearing surface supported by a complimentary bearing surface in the housing and a fluid bearing acts between the surfaces. The fluid is supplied to the fluid...
10/24/2006
7090475Hydraulic control circuit for a hydraulic engine with at least two speeds
A hydraulic control circuit for a radial piston engine with two speeds. The changeover between the speeds takes place through the alteration of the absorption volume, the delivery side being connected to the discharge side with a bypass connection by a valve arrange...
08/15/2006
6925974Wobble plate engine
A wobble plate engine includes a cylinder block, a plurality of pistons, a drive shaft, a weight, an oscillating member, a plurality of rods connecting the pistons to the oscillating member, a pair of bevel gears and a plurality of thrust bearing assemblies wherein ...
08/09/2005
6513325Mechanism of returning to neutral for axle driving apparatus
A hydrostatic transmission including a hydraulic pump and a hydraulic motor fluidly connected with each other, being immersed in an oil sump formed in a housing. A pair of oil passages for fluidly connecting the hydraulic pump with the hydraulic motor are...
02/04/2003
6345501Hydraulic motor
A hydraulic motor arrangement including a hydraulic motor having an inlet port arranged to receive a driving fluid, and an outlet port whereby fluid can exhaust from the motor, the arrangement incorporating a by-pass line interconnecting the inlet and the...
02/12/2002
6341488Mechanism of returning to neutral for axle driving apparatus
A hydrostatic transmission is provided comprising a hydraulic pump and a hydraulic motor fluidly connected with each other through a closed fluid circuit. Pistons press against a control arm connected with a movable swash plate of the hydraulic pump and g...
01/29/2002
6186747Axial plunger slurry pump
An axial plunger slurry pump comprises a pump body, a sloping cam plate, a swashplate, cylinders, plungers and a pump head. Each of the plungers comprises a plunger body with a rubber piston positioned in its front end and being able to slide over it, and...
02/13/2001
6116871Device to reduce pulsations on a hydrostatic positive displacement unit
This invention relates to a device to reduce pulsations on a hydrostatic positive displacement unit, such as an axial piston machine or a radial piston machine which can be used both as a pump and as a motor. The direction of rotation of the positive disp...
09/12/2000
6109032Mechanism of returning to neutral for axle driving apparatus
A hydrostatic transmission is provided comprising a hydraulic pump and a hydraulic motor fluidly connected with each other through a closed fluid circuit. Pistons press against a control arm connected with a movable swash plate of the hydraulic pump and g...
08/29/2000
6086336Device to reduce pulsations on a hydrostatic positive displacement unit
This invention relates to a device to reduce pulsations on a hydrostatic positive displacement units, such as an axial or radial piston machine working both as a pump and as a motor with a reversible direction of rotation. In the displacement units, at le...
07/11/2000
5313873Device for controlling the flow of fluid to a fluid unit
A fluid unit, for example a piston/cylinder unit, is supplied with fluid via a cyclically opened or closed on/off valve. The vacuum peaks occurring on the outlet side of the on/off valve when it is closed and the inertia forces of the flowing fluid are us...
05/24/1994
5094145Hydraulic pump or motor with rotary cylinder barrel
A hydraulic pump or motor having a rotary cylinder barrel formed with a plurality of cylinders in which a corresponding number of plungers are axially slidably disposed for reciprocation and a valve plate in frictional engagement with an end face of the c...
03/10/1992
4967555Hydraulic continuously variable speed transmission with relief valve to prevent engine stall
A hydraulic continuously variable speed transmission includes a hydraulic pump and a hydraulic motor, at least one of said hydraulic pump and motor being of variable displacement type. A hydraulic path is formed in a member of the pump which rotates in sy...
11/06/1990
4864916Radial pump/motor
A hydraulic pump/motor in which working piston elements are arranged for radial reciprocation. A cam is arranged eccentrically to a rotor which carries the pistons. Fluid cavities are provided in feet on the pistons, in the faces of a polygon to which the...
09/12/1989
4348946Radial piston machine with free--floating piston and piston--shoe assemblies
A radial-piston machine has a rotor formed with a plurality of each a piston carrying radial cylinders. Each such piston is formed on its radially outer end with a part-spherical seat and a part-spherical portion of a respective piston shoe that rides on ...
09/14/1982
4224859Axial piston machine
The axial piston machine, such as an engine or a pump, comprises a radial hydrostatic bearing for the drive shaft in the form of an oil gap between a conical shaft portion and a corresponding conical boring in a bearing block. The gap has a plurality of b...
09/30/1980
4057006Valve plate arrangement for hydrostatic piston machines
An axial piston machine of the swash plate type includes a valve plate provided in a front face thereof with control openings which communicate at opposite ends through bores with the rear face of the valve plate. A plurality of shallow pockets, respectiv...
11/08/1977
3935794Radial piston pump/motors
Radial piston pump or motor has within its housing a stationary pintle valve, an external shaft connected to a rotating spider of which are mounted pressure balanced pivotal cylinders. Rigid piston - shoe assemblies engage the cylinders and ride on a cyli...
02/03/1976
 
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