Class 417/460 - Moving cylinder

Subclass of Class 417 - Pumps
Definition: Apparatus in which the expansible chamber pump comprises
No. of patents: 40
Last issue date: 04/10/2012

Number	Title	Issue Date
8152497	Compressor In sealed compressors, in one form of the invention, the compressor housing and the compression mechanism are assembled to one another without fasteners. As a result, the time required to install and tighten the fasteners is eliminated, lessen the time required to a...	04/10/2012
7255071	Supercharged two-stroke engine with upper piston extensions An apparatus useful in a two-stroke cycle engine or in a pump as a piston disposed within a piston cylinder. The piston cylinder has an intermediate piston cylinder head disposed transversely across the interior of the piston cylinder. The piston has at least one up...	08/14/2007
6986651	Pump priming apparatus A pump priming apparatus including a housing through which fluid object material may be urged to flow, the housing including an intake portion and a pumping portion downstream from the intake portion. The apparatus further includes a piston assembly carried for reci...	01/17/2006
6966283	Apparatus with piston having upper piston extensions An apparatus useful in a two-stroke cycle engine or in a pump as a piston disposed within a piston cylinder. The piston cylinder has an intermediate piston cylinder head disposed transversely across the interior of the piston cylinder. The piston has a lower portion...	11/22/2005
6955531	Pump for inflating and deflating an inflatable object with a rotatable nozzle assembly A pump is capable of inflating and deflating an inflatable object. The pump includes a cylinder, a piston and a nozzle. The cylinder defines an outlet through which air can only flow into the cylinder and an inlet through which air can only flow from the cylinder. T...	10/18/2005
6793471	Fluid machine The fluid machine can be used as a pump, compressor, motor and internal combustion engine and is characterized by two mobile opposite cylinders fixed rigidly to each other. Said cylinders move simultaneously in the same direction. Inside the opposite cylinders there...	09/21/2004
6755628	Valve body for a traveling barrel pump The invention is a component of a subsurface traveling barrel bottom anchor pump comprising a traveling valve assembly which includes: a cylindrical valve body having a lower section, the lower section having a central bore therethrough and external threads which in...	06/29/2004
6514055	Piston pump having a hollow piston The invention relates to a piston pump for a slip-controlled hydraulic vehicle brake system. For the sake of a short structural length of the piston pump, piston of the piston pump is a hollow piston, whose interior forms a positive displacement chamber o...	02/04/2003
6368084	Downstroke sucker rod well pump Fluid pumping apparatus for pumping fluids from a well comprising a downhole pump disposed near the lower end of a production string and including a tubular pump barrel and a tubular pump plunger concentrically disposed in the pump barrel in a sliding and...	04/09/2002
6364639	Pump A lance pump, particularly for lubricant, having a fixed plunger and a pump tube reciprocable in cycles through an outward stroke and an inward stroke on each cycle on the plunger, operable to deliver metered charges of lubricant on each outward stroke as...	04/02/2002
6358023	Moment pump The moment pump (10) of the present invention includes a flexible container (12) having an outer wall (14) and two opposing end walls (16, 18) attached thereto. The container (12) is made of a resilient material and has a preformed, non-biased shape. A pa...	03/19/2002
6267161	Carbon-dioxide pump for tires A carbon-dioxide pump for tires which comprises a dispensing head which is provided with a nosepiece for coupling to the tire valve which is connected to a threaded hole for the hermetic fixing of a bottle of carbon dioxide and to a sliding hole for a nee...	07/31/2001
6224347	Low volume, high precision, positive displacement pump A pump (10) includes a motor (11) which rotates a pumping assembly (52) which includes a face plate (54) and a cylinder (56). A piston (67) reciprocates in the cylinder (56) to draw fluid into the cylinder (56) from an intake groove (78) and an intake por...	05/01/2001
6200055	Dispenser device for dispensing metered doses of viscous material A dispensing device including a pump assembly for pumping out the viscous liquid material stored in the device. The pump has a cylinder and a piston disposed within the cylinder, wherein the cylinder includes a cylinder inlet valve and the piston includes...	03/13/2001
6102676	Pump A lance pump, particularly for lubricant, having a fixed plunger and a pump tube reciprocable in cycles through a downstroke and an upstroke on each cycle on the plunger, operable to deliver metered charges of lubricant on each downstroke as well as on ea...	08/15/2000
5921759	Liquid metering piston pump and valves capable of being cleaned and sterilized without disassembly An inverted, displacer type piston pump for metering and dispensing liquids in which the cylinder is located beneath the piston and reciprocated via an actuator below the cylinder, and where the piston is held fixed. The liquid ingress and egress to and f...	07/13/1999
5651302	Actuator pump An actuator pump has one or more colinear piston cylinders (2, 3, 25) in a cylinder housing (1) in which change of volume is provided by reciprocative relationship of colinear pistons (4, 5, 23, 24,) in the colinear piston cylinders. One or more travel gu...	07/29/1997
5593288	Liquefied gas pump A liquefied gas pump includes a piston and a cylinder which form a pump chamber into which a liquefied gas entrance path and a liquefied gas discharge path open. Relative upward and downward motion between the piston and cylinder provides a repetition of ...	01/14/1997
5529463	Pumping apparatus for perfusion and other fluid catheterization procedures A pumping apparatus which is particularly useful in catheterization procedures has two pumps supported in a parallel arrangement. The pumps are engaged by an actuating rod connected to a power cylinder which reciprocates longitudinally between the two pum...	06/25/1996
5316454	Fluid pump and rotary machine having said fluid pump An inexpensive, efficient pump which can supply lubricating oil uses the revolving motion of an orbiting scroll 2. The pump is so constructed that a piston supported by a fixing member 1 is fitted in a cylinder chamber 102 formed in the inner surface of t...	05/31/1994
5080196	Lubricating system and pump A pump has a static piston (1) slidably received in a movable cylinder (2). The piston (1) is anchored to a body (4) and the cylinder (2) slides in the body (4). A displacement force applied to an end cap (9) of the cylinder (2) will displace the cylinder...	01/14/1992
4998866	Precision liquid handling apparatus An improved liquid handling system for controllably dispensing, aspirating and intermixing various liquids through the use of a precision liquid metering and aspirating device having a fixed base and a rotatable fluid containing cartridge....	03/12/1991
4830588	Capillary primed pump A positive displacement pump useful under zero-gravity conditions is primed by the capillary wicking action of a fluid accumulator and a set of capillary plates located in a pair of pumping chambers. The fluid accumulator and capillary plates are closely ...	05/16/1989
4822254	Oscillating cylinder pumping arrangement A pumping arrangement includes an electric motor which has an output shaft having a shaft portion that projects out of the stator of the motor, a crankcase which surrounds the shaft portion and includes an outwardly projecting piston component that is sta...	04/18/1989
4758131	Apparatus for displacing high viscous substances An apparatus for displacing a high viscous substance, such as grease, which comprises a positive displacement-type pump. The chamber of the pump is in communication with a second chamber defined by a tubular sleeve that is slidably displaceable on the bod...	07/19/1988
4739904	Dispenser pump A dispenser pump has pump chamber (34) whose volume is variable to draw up or discharge material, by the axial movement of a cup (25) on a stationary hollow stem (12). The seal (16) between them slides on an inner wall of the cup. A collector (30) at the ...	04/26/1988
4722263	Portable hydraulic pump A combination hydraulic pump and integral container apparatus comprising a container including generally symmetrical first and second members coupled to each other for relative pivotal movement between a closed position wherein the members define a genera...	02/02/1988
4586881	Machine having integral piston and cylinder wall sections A compact lightweight engine or pump is constructed having a H-shaped piston, usually double acting. Each end of the piston has extending surfaces which form two moving sidewalls which act with two case sidewalls and a block-shaped head protrusion to defi...	05/06/1986
4527460	Radial piston machine A radial piston machine has a cylindrical housing which encloses a rotary shaft formed with an eccentric. A plurality of stationary piston rods is connected to the inner wall of the housing and radially directed toward the shaft. The free ends of piston r...	07/09/1985
4478561	Hydraulic intensifier A hydraulic intensifier comprising a stationary working fluid plunger connected to a power fluid cylinder and piston arrangement disposed around the plunger. The power fluid piston is disposed around and integral with a working fluid cylinder member which...	10/23/1984
4462767	Air pump An air pump comprising a piston located inside a piston housing having a crown and an open end. The piston is provided with a pressure generating member in the form of a resilient membrane-like annular disc which is held centrally on one end of the piston...	07/31/1984
4439115	Manure transfer system having a pull pump A manure transfer and storage system (2, 102) includes a manure collection hopper (13) disposed at a first location for receiving manure. A pull pump is operatively mounted in the collection hopper (13) and includes a movable piston body (30, 130) which i...	03/27/1984
4431387	Hermetic refrigeration rotary motor-compressor A hermetic refrigeration rotary motor-compressor comprising a hermetically sealed pressure tight housing can enclosing a compressor unit comprising a housing having at least two axially spaced walls and rotatable in relation to the housing piston and cyli...	02/14/1984
4280798	Work machine An improved work machine of the eccentric piston type which may be employed to translate force of pressurized fluid into rotary shaft motion in an external combustion type engine system, as a pump for pumping fluids in a fluid handling system, and as a fl...	07/28/1981
4278114	Kitchen appliance for storing perishable goods A container with an air tight lip incorporating a check valve for only evacuating air from the container by a piston suction pump sealed against the lip and around the check valve; the pump being arranged to receive manual pressure to produce the suction ...	07/14/1981
4274327	Expansible chamber device An internal combustion engine, a fluid motor or a pump includes a cylinder block enclosing an elongated cylindrical bore. A double headed piston is slidably mounted within the bore. The piston and cylinder block are rotatable relative to each other about ...	06/23/1981
4272228	High volume dispensing pump A high volume, low profile, quick acting, dispensing pump features valve members provided with flow restricting passages which accelerate the opening and closing action of the valve members and thus make it possible for the pump to handle large volume qui...	06/09/1981
4207806	Miniature volumetric pump A miniature volumetric pump for determining the thermodynamic characteristics of oil effluents comprising a hollow cylinder and a piston moving in a straight line relative to the cylinder. The pump is characterized in that the piston is stationary and sec...	06/17/1980
4195440	Fluid suction device A fluid suction device is disclosed. The device comprises a cylinder, a piston mounted for sliding movement into the cylinder, a shaft secured to the piston at one end and having a longitudinal bore therein communicating with the cylinder, a suction head ...	04/01/1980
4044745	Injector pump In order to reduce the CO-content in exhaust gases of combustion engines, the atomization is improved by coupling the displacer body of a fuel pump with the armature of an electro-magnet, which armature is arranged so as to be movable between two electro-...	08/30/1977

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Class 417/460 - Moving cylinder