U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Bizarre Patents

Patent No. 5979328

Vehicular Impact Signaling Device

An apparatus for the deployment of a visible plume to alert other motorists that a proximate motor vehicle has been involved in a collision.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 418/182 - RELATIVELY MOVABLE WORKING MEMBER AND DRIVE SHAFT AXES


Subclass of Class 418 - Rotary expansible chamber devices
Definition: Apparatus in which there is provided a loose or compensation
No. of patents: 73
Last issue date: 05/01/2012


1    
NumberTitleIssue Date
8167597Shaft bearings, compressor with same, and methods
A bearing material composition that lines a support includes a combination of a thermoplastic conforming material and abrasive particles which provide a combined effect for remedying the effects due to edge loading that may be caused by misalignment between the bear...
05/01/2012
7661939Drive shaft for a compressor
A compressor drive shaft may include a first bearing portion, a second bearing portion, and an intermediate portion disposed therebetween. The intermediate portion may include a continuous, nonlinear, central axis in an unloaded state. ...
02/16/2010
7351046Shaft-hub connection
A shaft-hub connection for transferring a torque between a shaft (1) and a hub (3) with the aid of at least one drive element (2). To enable a torque transfer which is practically resistant to wear, even under the effect of transversal forces, t...
04/01/2008
7175402Eccentric coupling device in radial compliance scroll compressor
An eccentric coupling device in a radial compliance scroll compressor includes a crank pin that is eccentrically arranged at an upper end of a crankshaft and provided with a vertically-extending flat surface at one side thereof. A bush is provided with a crank pin h...
02/13/2007
7150609Eccentric coupling device in radial compliance scroll compressor
An eccentric coupling device in a radial compliance scroll compressor including a crank pin eccentrically arranged at an upper end of a crankshaft included in the scroll compressor, and provided with a vertically-extending cut surface at one side thereof, a bush fit...
12/19/2006
7150612Gear pump or motor
A gear•rear shaft containing main body of a bottomed type is penetrated with a bearing hole and a rear face of the gear•rear shaft containing main body is coupled with a closing plate to form an airtight seal from an outside environment. Shafts extended from two...
12/19/2006
7104771Eccentric bush structure in radial compliance scroll compressor
An eccentric bush structure in a radial compliance scroll compressor including an eccentric bush fitted around a crank pin eccentrically provided at an upper end of a crankshaft, crank pin and stopper holes provided at the eccentric bush, and a weight member adapted...
09/12/2006
6996905Method of making gear pump
An improved high pressure intermeshing gear pump that achieves high efficiency and a low cost by forming the pumping cavity such that no fillets exist at the corners permitting closed fits without utilizing bearing end plates. In addition an improved coupling betwee...
02/14/2006
6991442Gear pump and method of making same
An improved high pressure intermeshing gear pump that achieves high efficiency and a low cost by forming the pumping cavity such that no fillets exist at the corners permitting closed fits without utilizing bearing end plates. In addition an improved coupling betwee...
01/31/2006
6962489Moineau pumping device having a ball coupling
A pumping device is provided which comprises a Moineau pump with a helical rotor inside a helical cavity of a stator, driver means, and a drive connecting rod coupled by a respective coupling to a driving shaft of the driver and to one end of the rotor. Each couplin...
11/08/2005
6729862Rotary piston machine
The invention relates to a rotary piston machine, comprising a housing (10) and a piston (12) which is situated in a hollow area of the housing (10) in such a way that it can rotate and which is rotationally fixed to a shaft (18) that pas...
05/04/2004
6716011Hydraulic pump utilizing floating shafts
A hydraulic pump assembly includes a pump housing having a chamber defined therein, wherein the chamber includes a pair of cylindrically shaped portions each defining at least one end wall. The hydraulic pump assembly also includes a pair of rotary pump elements dis...
04/06/2004
6679692Oil pump
A modular oil pump for use in combination with an internal combustion engine having a dry sump lubrication system. The device features a first gerotor pump having an intake port engageable in communication with at least one engine sump and having an disch...
01/20/2004
6565341Geared feed pump for supplying fuel to a high pressure fuel pump
A geared feed pump has a rotatably driven pair of meshed gears (16, 19) arranged in a pump chamber (14) of a housing (10, 12). The feed pump supplies fuel from a suction chamber (16) between the peripheries of the gears (16, 18) and the peripheral walls (...
05/20/2003
6425749Coupling and fuel-supply pump with coupling
The invention relates to a coupling for coupling two rotatable bodies, in particular a gear and a drive shaft, which are disposed essentially concentric to each other, with or without axial offset, having a coupling part. In order to reduce the structural...
07/30/2002
6325604Plastic gear pump housing
A gear pump comprising a plastic gear pump housing having an interior surface. Rotatably attached to the gear pump housing is a drive gear and an idler gear. The idler gear is cooperatively engaged to the drive gear such that rotation of the drive gear wi...
12/04/2001
6244842Pump
A hydraulic pump includes a pump mechanism having a driven shaft. The driven shaft is connected to an input shaft by a flexible coupling such as a splined connection. A housing extends completely around the driven shaft, and a high-pressure seal is dispos...
06/12/2001
6155807Eccentric worm pump
An eccentric worm pump has a tubular stator extending along a main axis and having an intake side and an output side, an eccentric worm fitting in the stator and centered on a rotor axis offset from the main axis, an intake housing forming an intake compa...
12/05/2000
6149416Hydraulic machine
A hydraulic machine is proposed, with a drive shaft rotating around a center axis, a drive wheel at a first end of the drive shaft, via which forces, which are characterized by a force component running largely vertical to the center axis, are led to the ...
11/21/2000
6059552Hydraulic vane machine
Hydraulic vane machine with a stator having a stator bore with a guiding contour, a rotor arranged in the stator bore and having substantially radially movable vanes bearing on the guiding contour, and a shaft connected fixedly rotatable with the rotor vi...
05/09/2000
5833445Rotary pump having a compensating coupling
The rotary pump, which in particular is suitable for use in a continuously variable transmission, is provided with a pump housing and a rotor with a drive shaft. Movable displacement elements are accommodated in the grooves of the rotor. The rotor is surr...
11/10/1998
5769618Uniaxial eccentric screw pump having a flexible plastic shaft
This disclosure relates to a uniaxial eccentric screw pump. A boss 10a is integrally formed on one end (on the side of a pump casing 8) of the rotor 10, the screw pump 100, and one end of a flexible shaft 9 is inserted in the boss 10a and bonded together ...
06/23/1998
5759019Progressive cavity pumps using composite materials
The stator, rotor and/or flex shaft of a progressive cavity pump is made up of composite materials, e.g., fiberglass and resin, in a variety of combinations with and without bonded resilient elastomers. The composites are formulated to provide resiliency ...
06/02/1998
5704774Pump with twin cylindrical impellers
A pump which is easy to manufacture and which has a high efficiency and low vibration includes a pair of identical circular-shaped impellers which are respectively eccentrially and rotatably connected to respective parallel shafts so as to rotate opposite...
01/06/1998
5688114Progressing cavity pumps with split extension tubes
A progressing cavity pump comprises an inlet housing defining a chamber, an extension tube defining a tube interior communicating with the chamber, a stator defining an internal passageway communicating with the tube interior, a rotor positioned in the in...
11/18/1997
5549160Downhole progressing cavity pump rotor valve
An apparatus and method for plugging a tubing string of a fluid producing well below a sucker rod driven progressing cavity type pump uses a valve means inside of the tubing string below the pump, the valve means being actuatable by displacing the rotor o...
08/27/1996
5549465Drive arrangement for progressing cavity pump
A progressing cavity pump having a rotor with a longitudinal bore and including at least one helix is mounted eccentrically within a stator having at least two helices. In a first embodiment the rotor is driven by an eccentric drive shaft which shams a jo...
08/27/1996
5549464Drive arrangement for progressing cavity pump
A progressing cavity pump having a rotor with a longitudinal bore and including at least one helix is mounted eccentrically within a stator having at least two helices. In a first embodiment the rotor is driven by an eccentric drive shaft which shares a j...
08/27/1996
5435705Driving apparatus for a wobble plate machine
A drive apparatus for a wobble plate machine includes a transport chamber having at least two side walls. A wobble plate is disposed in the transport chamber and abuts at least one of the side walls to form a seal and to divide the transport chamber into ...
07/25/1995
5407334Scroll type compressor having a convex surface on the sub frame bushing
A scroll type compressor having a main frame, a sub frame and a crankshaft rotatably mounted in the main frame and the sub frame via a main frame bushing and a sub frame bushing, further includes a fixed scroll and an orbiting scroll cooperable with the f...
04/18/1995
5312229Scroll type compressor having curved bearing surfaces
A scroll type compressor comprising: a crankshaft having an eccentric shaft portion formed thereon; an orbiting scroll which is given torque by the crankshaft through the eccentric shaft portion; and bearing means for rotatably supporting the crankshaft; ...
05/17/1994
5295813Scroll-compressor having flat driving surfaces
A scroll machine has a drive that incorporates radial compliance. The radial compliance is achieved by having the crank pin drive a drive bushing via a flat surface on the crank pin which slidably engages a flat bearing insert disposed in the wall of a bo...
03/22/1994
5222881Scroll type compressor having curved surface portions between the shaft and bearing means
A scroll type compressor comprising: a crankshaft having an eccentric shaft portion formed thereon; an orbiting scroll which is given torque by the crankshaft through the eccentric shaft portion; and bearing means for rotatably supporting the crankshaft; ...
06/29/1993
5215165Oil pump
A rotor-type oil pump for supplying lubricating oil to an automotive internal combustion engine. The oil pump is comprised of inner and outer rotors which are rotatably disposed inside a pump casing. The inner rotor is formed with an external gear partly ...
06/01/1993
5195880Eccentric screw pump with reversible rotor
An eccentric screw pump comprises at least one stator, a rotor having a core and received for eccentric rotation in the stator, a first coupling device adapted to connect one end of the rotor to a drive system, a second coupling device provided at another...
03/23/1993
5193992Scroll type fluid displacement apparatus having control of the line contact urging force
A scroll type fluid displacement apparatus is disclosed. A driving mechanism includes a drive shaft which is rotatably supported by the compressor housing. A crank pin eccentrically extends from an inner end of the drive shaft and is drivingly coupled to ...
03/16/1993
5174738Slider block for a scroll compressor having edge loading relief under load
The outer surface of a slider block increases radially with increasing distance from the crankshaft for at least a portion of its height. As a result when the drive pin of the crankshaft deflects under load the slider block moves therewith as a unit. The ...
12/29/1992
5145348Gerotor pump having an improved drive mechanism
A gerotor pump is disclosed of the fixed-axis type, including an outer rotor (33) and an inner rotor (35). The gerotor is driven by a drive shaft (25) through a driver (51) including a pair of drive members (57), each having a cylindrical drive surface (5...
09/08/1992
5085564Flexible drive shaft
A flexible drive shaft for a helical gear pump having a rotor 10 in which the drive shaft 18 is formed with an enlarged, e.g. upset forged, head 20 and is provided with a plastics material coating 30. The drive shaft is held on to the rotor by bolts 40 pa...
02/04/1992
5048622Hermetically sealed progressive cavity drive train for use in downhole drilling
A drilling apparatus having progressive cavity drive train which includes a progressive cavity device and a coupling for converting the complex motion of the rotor into simple rotation. The coupling includes a sealed universal joint assembly coupling yoke...
09/17/1991
1    
 
Sign InRegister
Username  
Password   
forgot password?