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Patent No. 5205055

Pneumatic Shoe Lacing Apparatus

This invention provides a pneumatic shoe lacing apparatus for the pneumatic lacing of shoe.

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Class 417/488 - Form opposite chamber walls


Subclass of Class 417 - Pumps
Definition: Apparatus in which the pumping members form opposing walls
No. of patents: 45
Last issue date: 04/22/2008


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NumberTitleIssue Date
7360511Opposed piston engine
A two-cycle, opposed piston engine with side-mounted crankshafts and cylinders isolated from mechanical stresses of the engine includes tailored cooling of cylinders and symmetrical cooling of the interior surfaces of piston crowns. Each opposed piston includes a co...
04/22/2008
7318416Liquid fuel pump
A liquid fuel system for an internal combustion engine includes a fuel supply line, a fuel pump connected to the supply line and having an outlet to a carburetor or a liquid fuel injector. A mechanical contact between the pump and a component of the internal combust...
01/15/2008
7156056Two-cycle, opposed-piston internal combustion engine
In a two-cycle, opposed-piston internal combustion engine with optimized cooling and no engine block, the opposed pistons are coupled to a pair of crankshafts by connecting rods that are subject to substantially tensile forces acting between the pistons and the cran...
01/02/2007
7156626Double side action type reciprocating compressor
A double side action type reciprocating compressor is provided. The double side action type reciprocating compressor includes suction valve assemblies and discharge valve assemblies loaded in a suction passage and a discharge passage to thus control suction of fluid...
01/02/2007
7021904Swash plate type hydraulic pump or motor
A swash plate type hydraulic pump or motor comprises first and second swash plates which move reciprocally while opposing first and second pistons, so as to expand and contract a volume chamber according to rotation of a cylinder block. Drive pistons push on the swa...
04/04/2006
6935539Device for the metered delivery of a viscous liquid
A device for the metered delivery of a viscous liquid has a pump body with a drill hole accommodating two pistons which connects a first chamber serving as an intake chamber and a second chamber serving as a discharge chamber. Two swivel arms driven by two cam discs...
08/30/2005
6933629Active balance system and vibration balanced machine
An active balance system is provided for counterbalancing vibrations of an axially reciprocating machine. The balance system includes a support member, a flexure assembly, a counterbalance mass, and a linear motor or an actuator. The support member is configured for...
08/23/2005
6929064Downhole pump
There is disclosed an improved pump (5, 5′) particularly suitable for use in a method of “artificial lift” in an oil/gas well. Known pumps used in artificial lift methods suffer from a number of problems/disadvantages—e.g. low efficiency (hydraulic ef...
08/16/2005
6901755Piston position drift control for free-piston device
A piston position drift control for a free-piston device. The control includes a passage connecting internal volumes of the device, the passage being substantially shorter than an acoustic wavelength of the device; and a check valve in the passage for controlling fl...
06/07/2005
6805015Dual resolution syringe
A syringe for accurately metering small volumes of fluid samples and with dual resolution capabilities is provided. The syringe permits the aspiration of a tiny sample and also the dilution of a tiny sample with a much larger volume of reagent with the same syringe....
10/19/2004
6802700Oil supplying apparatus for opposed type reciprocating compressor
An oil supplying apparatus for an opposed type reciprocating compressor comprises oil kickers which are mounted on spring supporting plates coupled to armatures of respective reciprocating motors, or oil valves which are mounted on oil paths formed on a cylinder and...
10/12/2004
6705845Device for the metered delivery of a viscous liquid
A device for the metered delivery of a viscous liquid has a pump body with a drill hole accommodating two pistons which connects a first chamber serving as an intake chamber and a second chamber serving as a discharge chamber. Two swivel arms driven by two cam discs...
03/16/2004
6641377Linear compressor with a plurality of support springs and a dual compression unit
In a compressor, a yoke constituting a linear drive section together with a driver coil, through which magnetic fluxes from a permanent magnet pass, is integrated with a cylinder and a container. A piston inserted into the cylinder is supported by springs...
11/04/2003
6572348Electromagnetic compressor having an integral cylinder assembly and electromagnet molded from a resin
An electromagnetic compressor capable of reciprocating a piston to suck in and compress a gas by the force of an electromagnet and the resilient force of a return spring and a manufacturing method therefor are provided. The compressor includes a cylinder ...
06/03/2003
6499972Linear compressor
A linear compressor, comprises a retaining member, a fixed member supported by said retaining member and formed with a hermetically sealed compression chamber to receive a working fluid therein, a pair of pistons axially movably received in said compressi...
12/31/2002
6209328Oil-free compressor-integrated pulse tube refrigerator
A compressor integrated pulse tube refrigerator of an oil free type is disclosed. The refrigerator includes a driving unit including a sealed casing having a cylinder disposed at an upper center portion of the same and a working gas filled therein, a line...
04/03/2001
6079960Linear compressor with a coaxial piston arrangement
A linear compressor having improved heat-radiating performance incorporates first and second cylinders disposed coaxially, a first piston reciprocatably disposed inside the first cylinder, a second piston reciprocatably disposed inside the second cylinder...
06/27/2000
6074178Piezoelectrically actuated peristaltic pump
A peristaltic piezoelectrically actuated fluid pump including two or more pairs of piezoelectric deformable members that are self-actuated, a flexible hose member, a pump chamber, inlet and outlet ports for communicating the pump chamber with the exterior...
06/13/2000
6071088Piezoelectrically actuated piston pump
A piezoelectrically actuated fluid pump including a pump housing, a pump chamber, inlet and outlet ports for communicating the pump chamber with the exterior of the pump housing, valves for opening and closing the ports, a pre-stressed piezoelectric diaph...
06/06/2000
6004117Displacement pump
An improved displacement pump is provided with flow path means preventing hysteresis-causing bubbles from accumulating in piston clearances....
12/21/1999
5934889Pump driven by cam having the cylinder supported by the cam shaft
A pump for performing suction and discharge of a liquid, including: a cylinder supported at at least a first support point and a second support point; a piston slidably disposed in the cylinder and forming a pump chamber having a volume changeable by slid...
08/10/1999
5720415Apparatus for delivering fluid at a controlled rate and pressure
An apparatus for delivering fluid to a site at a controlled rate and pressure, which comprises a housing enveloping three interconnected chambers comprising a first end chamber, a connecting chamber and a second end chamber, an inlet port and an outlet po...
02/24/1998
5639220Pump with inlet and outlet simultaneously exposed to pump chamber and method of operating same
A pump unit includes a suction pump and a driving mechanism for driving the suction pump. The suction pump has a pump body provided with a suction port and a discharge port which are axially spaced, and a first piston and a second piston slidably fitted i...
06/17/1997
5630709Pump having pistons and valves made of electroactive actuators
The present invention provides a pump for inducing a displacement of a fluid from a first medium to a second medium, including a conduit coupled to the first and second media, a transducing material piston defining a pump chamber in the conduit and being ...
05/20/1997
5366904Method of metering a fluid using a multi-mode differential fluid displacement pump
A measured amount of a first fluid is metered into a measured amount of a second fluid by a method where a fluid is confined within a first chamber and a plunger of predetermined volume is mechanically moved into the chamber to displace a first measured a...
11/22/1994
5252042Gas booster assembly for fluid pressure piston driving apparatus
A first cylinder bore (7) for accommodating a first piston (8), a plunger bore (20) for accommodating a plunger (21), and a second cylinder bore (57) for accommodating a second piston (58) are provided in this order from above. The plunger (21) is fixed t...
10/12/1993
5024587Valveless pump
The present invention pertains to a pump, in which two pistons moving in the same direction in a common cylinder bore are provided to generate the suction intake and pressure, discharge effects as well as for control. Both pistons are held by fastening me...
06/18/1991
4941808Multi-mode differential fluid displacement pump
A multi-mode, differential fluid displacement pump provides for at least two different measured doses. The pump has a chamber in which are mounted a first diameter piston and a second diameter piston defining first and second volumes for reciprocation in ...
07/17/1990
4842495Non throttling discharge pump assembly
A pump assembly (1) for an atomizing piston pump comprising a piston (16) slidably located in a cylinder (4), a variable volume fluid storage chamber (5) in communication with the cylinder on one side of the piston, means (18) for varying the volume of th...
06/27/1989
4834032Two-stroke cycle engine and pump having three-stroke cycle effect
A multi-cylinder gas engine featuring a unique method of gas fuel intake and cylinder exhaust gas scavenging and recharging. It is a three cylinder opposed piston two-stroke cycle engine combined with a three cylinder opposed piston, sequentially ported, ...
05/30/1989
4767287Reciprocating piston mechanism
A reciprocating opposed piston mechanism having at least one cylinder assembly mounted to oscillate in rotary relation to a block about a central axis, two opposing pistons reciprocally mounted within the cylinder, each of the pistons having an eccentric ...
08/30/1988
4730992Continuously operable hydraulic device
This invention relates to a continuously operable hydraulic device usable as either a hydraulic pump or a hydraulic motor, including a plurality of unit hydraulic devices each having a pair of plungers. Operational association between these unit hydraulic...
03/15/1988
4568249Variable reciprocating plunger pump
A reciprocating plunger pump having variable pumping modes is disclosed. A pump housing having an enclosed pump chamber provided with a valved inlet and a valved outlet is provided. A first plunger having a piston end extending into the pump housing and a...
02/04/1986
4537562Pump
Pump having an inlet through which passes a medium intended for pumping, and an outlet through which passes the pumped medium. A drive source acts upon a number of pumping organs, said pumping organs being arranged in pairs as to be actuated by at least t...
08/27/1985
4518069Adjustable speed drive utilizing radially movable hollow pistons which act on a cam surface
An adjustable hydraulic speed drive for controllably maintaining output torque and variable output speed is disclosed. The drive utilizes a rotating group of pistons in radially arranged bores in a portion of an input shaft. A supply of controlled fluid i...
05/21/1985
4500265Magnetically actuated compressor
A vibration free fluid compressor particularly adapted for Stirling cycle cryogenic refrigeration apparatus comprising a pair of identical opposing ferromagnetic pistons (10, 12) located in a housing (22) and between a gas spring including a sealed volume...
02/19/1985
4448574Extra-high pressure water pump
An extra-high pressure water pump includes a cylinder barrel, a piston and a pair of double check valves. The piston is composed of a main piston and a lubricating oil piston. The lubricating oil piston has a double piston ring and is slidably mounted on ...
05/15/1984
4416596Fluid-transfer system and method
A fluid-transfer system has two pistons movable within a barrel so that the ends of the piston faces can move together or apart, the barrel having at least two openings therein for transfer of fluid into and out of said barrel. The pistons can be controll...
11/22/1983
4407644Fuel injection pumping apparatus
A fuel injection pumping apparatus includes a rotary distributor member having a transverse bore containing a pumping plunger, a single passage is formed in the distributor member and extends from the bore to the periphery of the distributor member, inlet...
10/04/1983
4405294Dosing pump
A valveless dosing pump is disclosed which comprises a housing having a cylindrical bore therein with a plurality of hard material rings press-fit into the bore and spaced from each other to leave annular inlet and outlet spaces. First and second pistons ...
09/20/1983
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