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Patent No. 5971829

Motorized Ice Cream Cone

A Receptacle for supporting, rotating and sculpting a portion of ice cream or similarly malleable food while it is being consumed.

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Class 417/546 - Piston contains inlet and outlet valves


Subclass of Class 417 - Pumps
Definition: Apparatus in which the piston is provided with relatively
No. of patents: 16
Last issue date: 09/06/2011


NumberTitleIssue Date
8011906Piston pump
A piston pump includes a pump mechanism for changing a volume of a pump chamber to move a piston in a housing, and a feed mechanism that has a feed ring attached to a circular groove portion of the piston to be slaved with a movement of the piston. The feed mechanis...
09/06/2011
7328748Thermal actuated plunger
A downhole plunger for a gas/oil well comprises a valve to regulate fluid flow past the plunger and a thermal actuator to control the valve. The thermal actuator of the disclosed device enables the valve to open and close aperatures without relying on the physical i...
02/12/2008
7314080Slidable sleeve plunger
An improved plunger lift mechanism comprises an internal hollow body having bypass orifices that, when exposed, allow fluid to pass through during plunger descent in a downhole tube to the bottom of a production well. A slidable sleeve slides along the hollow body t...
01/01/2008
7290602Internal shock absorber bypass plunger
A bypass plunger having one or more internal shock absorbing elements and a variety of bypass orifice options is disclosed. ...
11/06/2007
6945762Mechanically actuated gas separator for downhole pump
A reciprocating downhole pump has a gas separator located at its bottom end. The separator forms a chamber that is expanded and contracted when the pump is reciprocated. Expansion and contraction of the chamber occurs by either the plunger reciprocating in the chamb...
09/20/2005
6655927Radial piston pump with piston arrangement for controlling inlet/exit flow
The radial piston pump possesses a pump housing in which a plurality of cylinder bores are provided having pump pistons placed therein which can be driven by a cam. Further, an arrangement is provided in each pump piston (3) wherein the inlet or the outle...
12/02/2003
6648615Inflator
A dual-direction inflator has a tube and a cover mounted on the tube. A rod extends through the cover and is inserted in the tube. A piston is received in the tube and mounted on an end of the rod. The piston has an air-in chamber and an air-out chamber d...
11/18/2003
6626650Cyclically operated fluid displacement machine
A displacement machine (10) comprises a housing (11), a reciprocating member (12) reciprocable linearly along an axis of reciprocation (13) in the housing (11) and defining with the housing (11) first (14) and second (15) variable volume chambers. A fluid...
09/30/2003
6280162Radial piston pump
A pump includes a pump housing with a bore, an inlet and an outlet, a piston movable in the bore, and an inlet valve and an outlet valve which are formed by a cup seal. The piston has a portion of a large diameter and a portion of a small diameter, each o...
08/28/2001
6065947Two-stroke operable pump
A pump includes a main body, a piston slidably received in the main body, and a hose having a first end attached to an end of the main body and a second end attached to the piston. A handle is attached to a piston rod, which, in turn, is attached to the p...
05/23/2000
5921759Liquid 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
5577896Pump
An object of the present invention is to provide a pump which suppresses a decrease in the volumetric efficiency of the pump to a great extent even in case that the kinematic viscosity of a fluid is high with a compact structure of the pump itself. The pr...
11/26/1996
5489197Bidirectionally pumping air pump
An improved pump structure including a shaft tube, a pivot tube, a piston element, a push and pull element and a handle element. The shaft tube is inserted inside the tube. The pivot tube's two ends are respectively connected to the handle element and the...
02/06/1996
5201639In-line hand pump device
A device for providing auxiliary pumping capabilities for a sump pump system and other low volume pumping systems. The in-line pumping device includes a tubular element with threaded ends to be mounted in the discharge pipe line of a sump pump system. A p...
04/13/1993
5127804Bicycle seat-tube pump with one-way valves
Air pumps particularly suitable for use with bicycles includes a first elongated tube to form a pump chamber and housing, a second elongated tube coupled with a piston in the first tube to reciprocate the piston within the pump chamber. A flexible hose ex...
07/07/1992
4778355Well pump system
A downhole well pump system comprises a reciprocating piston pump disposed in a fluid conduit in a wellbore which is filled with a driving fluid having a density preferably greater than the production fluid being pumped. The pump cylinder has a transverse...
10/18/1988
 
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