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

Icon_funbox Bizarre Patents

Patent No. 5678617

Method and apparatus for making a drink hop along a bar or counter

A method for generating a drink which appears to hop from a remote spot on the bar or counter and take one or more leaps, before landing in a patron's glass.

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 417/338 - Relatively movable pumping members driven by relatively movable working members


Subclass of Class 417 - Pumps
Definition: Apparatus in which two or more pumping members which are
No. of patents: 18
Last issue date: 04/08/2008


NumberTitleIssue Date
7354256Fluid end for duplex pumps
A fluid end for a duplex mud pump. In one implementation, the fluid end includes two liner blocks, each having a central passage. The fluid end further includes two fluid inlets disposed on a side portion and two fluid outlets disposed on a top portion and a suction...
04/08/2008
7086302Apparatus for reducing gear train backlash
Apparatus for reducing backlash in a gear wheel that includes at least two interacting gear rims that rotate in relation to one another. An adjusting mechanism is located between the gear rims for adjusting the relative angle of rotation of the gear rims about a com...
08/08/2006
6966761Linear compressor with aerostatic gas bearing passage between cylinder and cylinder liner
A linear abstract includes a cylinder part and a piston part. A spring connects the cylinder part and the piston part and operates in the direction of reciprocation of the piston part relative to the cylinder part. The piston part includes a radially compliant but a...
11/22/2005
6948916Piping layout for multiple compressor system
A multiple hermetic compressor assembly comprising a first compressor and an adjacent, second compressor interconnected by a hot gas pressure discharge manifold, a suction gas pressure equalization manifold, a suction manifold and an oil equalization manifold, the m...
09/27/2005
6874996Compressor having independently driven members
The hybrid compressor apparatus is composed of a compressor in which fluid is compressed by varying a volumetric capacity of a compression space provided between a first compression member and a second compression member, which are movable independently of each othe...
04/05/2005
6648608High pressure fuel pump
A main unit pumps the transferred liquid actuated by an auxiliary unit for pumping a working liquid. The auxiliary unit comprises a piston provided with an axial drilling (bore) for circulating working liquid between a tank and a compression chamber. The ...
11/18/2003
6506032Linear compressor
An object of the present invention is to provide a high-efficiency and reliable linear compressor in which even when a pressing force is applied to its piston, the piston is turnably connected and supported through a connecting rod so that sliding surface...
01/14/2003
5839888Well service pump systems having offset wrist pins
A pump system has first and second pumps. Each pump has a housing, which housing has an inboard end and an outboard end. The pumps are arranged so that the inboard ends are adjacent to each other. The inboard ends each have a crankshaft, while the outboar...
11/24/1998
5314312Fluid-rotating apparatus
A fluid-rotating apparatus comprises a positive displacement pump structure section for rotating the rotary shaft of each of a plurality of rotors synchronously. In controlling the synchronous rotation of the rotary shafts by a PLL control method, a gain-...
05/24/1994
5150586System and process of compressing miscible fluids
A system and process of parallel compressors for compressing fluids miscible with oil. The present invention utilizes parallel-coupled compressors, wherein each compressor comprises a crankcase chamber, discharge chamber, suction chamber, and ejector whic...
09/29/1992
4756675Scroll type fluid transferring machine with separate motor driving each scroll
A scroll type fluid transferring machine for sucking, compressing and discharging a fluid comprises a first scroll having a first wrap plate, a second scroll having a second wrap plate which is opposed to and combined with the first scroll, a first motor ...
07/12/1988
4752192Rotating drum pump having a plurality of fluid driven pistons
A rotating drum pump having a plurality of fluid driven pistons includes a pump housing with an enclosed rotating drum, and connection openings for a supplied and discharged driving fluid and for a supplied and discharged pump flow located in end walls of...
06/21/1988
4476681Balance free-piston hydraulic pump
A four piston hydraulic pump driven by a four cylinder free-piston Stirling engine has four stepped pistons operating out of phase in pairs. The hydraulic fluid pumped between the hydraulic cylinder can be tapped for hydraulic power. The stepped pistons g...
10/16/1984
4420291Dynamic cooler apparatus for molten thermoplastic material
A dynamic cooler apparatus is provided for dynamically cooling molten plastic extrudate while pumping metered amounts of that extrudate to an extrusion die or the like. The dynamic cooler apparatus utilizes bi-helical gears in a gear pump configuration in...
12/13/1983
4177018Apparatus for regulating the passage and flow-rate of a liquid
A symmetrical, twin centrifugal pump includes a pair of valves mounted about a common shaft. The valves are capable of independent operation thus allowing either or both of the pump elements to operate. A key is also mounted to the shaft to allow overall ...
12/04/1979
4127360Bumpless pump apparatus adjustable to meet slave system needs
Pumping apparatus which incorporates connected piston type positive displacement, slip free pumps is disclosed. They provide pumped outputs at a common displacement rate. They run out of phase to one another so that while one is pumping, the other is able...
11/28/1978
4084246Pulse generator
A pulse generator for producing two output pulse trains A and B where the total number of pulses in both train A and B over a fixed time period remains a constant. The two pulse trains are derived from a master clock which gates a plurality of cascade con...
04/11/1978
3999895Rotating barrel pump
A positive displacement pump or motor having a plurality of cylinders in a rotatable cylinder block, the axes of the cylinders being parallel to the axis of rotation of the block, and stationary inlet and discharge ports which overlap openings in the cyli...
12/28/1976
 
Sign InRegister
Username  
Password   
forgot password?