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

Icon_funbox Quotables

"It is my heart-warmed and world-embracing Christmas hope and aspiration that all of us, the high, the low, the rich, the poor, the admired, the despised, the loved, the hated, the civilized, the savage (every man and brother of us all throughout the whole earth), may eventually be gathered together in a heaven of everlasting rest and peace and bliss, except the inventor of the telephone. "

Mark Twain ; Christmas greetings, 1890

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 138/28 - Expansible or compressible tube element


Subclass of Class 138 - Pipes and tubular conduits
Definition: Devices in which the tube itself or a part thereof is expansible
No. of patents: 45
Last issue date: 10/09/2007


1    
NumberTitleIssue Date
7278625Metering valve
A valve device for metering a fluid for metering a urea-water solution for the aftertreatment of exhaust gases from internal combustion engines, which contains elements that flex or are compressed under high pressure so that the volume of the working chamber can cha...
10/09/2007
7255133Fluid pressure system including free floating bladder
A fluid pressure system (S) includes a flexible diaphragm bladder (172) located inside a pressure tank (164) installed within a fluid system such as well (168). In preferred aspects, the bladder (172) can be inflated by the introduction o...
08/14/2007
7201012Remedies to prevent cracking in a liquid system
A liquid cooling system utilizing minimal size and volume enclosures, air pockets, compressible objects, and flexible objects is provided to protect against expansion of water-based solutions when frozen. In such a system, pipes, pumps, and heat exchangers are desig...
04/10/2007
7156239Filter unit for freezable liquids, particularly for a metering unit of an exhaust gas treatment device
A filter unit for liquids undergoing freezing for a metering unit of an exhaust gas treatment unit has a housing having an outer member and a lid member. At least one filter insert is arranged in the housing. An elastically deformable casing part is provided that su...
01/02/2007
7093651Water pressure system with pressure tank installed within well casing of well
A water pressure system includes a pressure tank installed underground within the well casing of a well. The water pressure system includes a submersible pump connected to the inlet of the pressure tank by a drop pipe. The outlet of the pressure tank is connected to...
08/22/2006
7040350Perforated pulsation dampener and dampening system
Perforated pulsation dampening devices of this invention comprise a housing having a structural wall section with opposed ends defining an internal chamber. The housing is characterized by a plurality of openings disposed therethrough. A compressible member is dispo...
05/09/2006
7013924Fluid pressure system including free floating bladder
A fluid pressure system (S) includes a flexible diaphragm bladder (172) located inside a pressure tank (164) installed within a fluid system such as well (168). In preferred aspects, the bladder (172) can be inflated by the introduction o...
03/21/2006
6915786Damper for a fluid system
A fluid damper includes a hollow body portion, a first end and a second end. The hollow body portion has a corrugated or shaped outer surface and is filled with a compressible medium. The first and second ends of the damper contact the inner wall of the fluid-carryi...
07/12/2005
6463911Fuel pressure damper
A tubular fuel pressure damper for use in a fuel rail. The tubular fuel pressure damper includes a first and second end and an inner surface defining a cavity. The first and second ends of the fuel pressure damper are closed by crimping to form contact ar...
10/15/2002
6418969In-line thermal expansion tank
An in-line expansion tank includes a sleeve defining a volume, a pipe positioned within the sleeve, and an annular flexible bladder disposed within the volume between the sleeve and the pipe. The pipe defines a fluid flow channel, an inlet at an upstream ...
07/16/2002
6338364Insert for freeze protecting water pipes
The invention is a round, flexible, hollow tubular insert to be affixed in a central position within pressurized sprinkler pipes, water pipes and water mains. The insert will be employed to prevent sprinkler pipe, water pipe and water main ruptures due to...
01/15/2002
6314942Fuel pressure dampening element
A fuel rail assembly is disclosed. The fuel rail assembly includes a generally hollow fuel rail having a longitudinal rail axis extending therethrough and a fuel damper element having a wall and a longitudinal damper element axis extending therethrough. T...
11/13/2001
6119729Freeze protection apparatus for fluid transport passages
The present invention provides a fluid handling apparatus for use in cold temperature conditions. In this respect, the apparatus of the present invention comprises a freeze protected conduit having a length comprising an elongated conduit for conveying or...
09/19/2000
6009906Method and apparatus for preventing pipe damage
An apparatus and method for protecting a pipe from damage due to excessive internal pressure, such as the pressures resulting from water freezing within the pipe. A compressible core apparatus is disclosed for placement within the pipe. Methods for placin...
01/04/2000
5797416Faucet and water pipe freeze-protection device
A device which protects water faucets and water pipes to which they are attached from freezing or breaking due to freezing of water contained therein. The device comprises a closed-ended nipple which is axially and/or radially expandable to accommodate fr...
08/25/1998
5746255Compound hose system
A frost-free water supply system drains down to avoid freeze-up during non-pumping periods, its operation being responsive to air pressure within the system. A compound hose used may have an inner hose part co-extruded with the outer hose. The inner hose ...
05/05/1998
5718952Hollow structural member
A stiff elongated hollow structural member has a double-walled structure in the shape of a tube made of an interior tube which has an annular cross-section and an exterior tube which has a different cross-section, in a concentric arrangement. The interior...
02/17/1998
5709248Internal accumulator for hydraulic systems
Accumulators normally are teed into existing conduits and require large amounts of space or are placed in spool type bores having a spring biased piston slidably disposed therein. Most times these accumulators require a bladder that is vented to the atmos...
01/20/1998
5575262Damper element for damping compressive oscillations and method for producing the same
A damper element for damping compressive oscillations in the fuel circulation circuit of an internal combustion engine is situated directly in the fuel distributor. The damper element includes one or more gas-filled chambers and is manufactured from a res...
11/19/1996
5538043Method and apparatus for preventing pipe damage
An apparatus and method for protecting a pipe from damage due to excessive internal pressure, such as the pressures resulting from water freezing within the pipe. A compressible core apparatus is disclosed for placement within the pipe. Methods for placin...
07/23/1996
5339865Apparatus for compensating for variations in pressure exerted by a fluid within a container against the container
An apparatus for compensating for variations in pressure exerted by a fluid within a container against the container to maintain the pressure below a pressure limit within a predetermined pressure range. The pressure range has an upper range limit above t...
08/23/1994
4960040Arm structure for articulated mechanism
An arm structure for use in an articulated mechanism such as an industrial robot comprises a plurality of links operatively interconnected by articulations having respective actuators and actuatable by the actuators under a fluid pressure. Each of the lin...
10/02/1990
4958599Cooling device for engine
A compact power supply powered by a gas fueled internal combustion engine having a liquid cooling system. The liquid cooling system includes an expandable expansion chamber device which permits a compact construction and which also permits the use of a co...
09/25/1990
4773448Freeze-resistant plastic pipe and method for its manufacture
A plastic pipe with a hard outer shell lined with an inner shell of soft resilient plastic foam with a smooth central axial passageway adapted to be a conduit for liquid. A method of manufacturing this pipe which comprises simultaneously extruding the mat...
09/27/1988
4770211Method for thawing out road culverts choked with ice
Method for clearing a road culvert or the like which is choked with ice, wherein a substantially homogeneous rope of a material having at least a certain reversible extensibility is extended through the culvert from its inlet side to its outlet side and w...
09/13/1988
4755112Water/air pumping system
The present disclosure is directed to a water/air pumping system comprising essentially a substantially flat primary reservoir, a header tank and a pump. At least one reciprocating piston is powered through the tank. Eccentric drive cams are directly conn...
07/05/1988
4742889Phonic deadening device for conduit of sanitary installation
The phonic deadening device comprises a cylindrical sleeve (5) with double walls, made of an elastic material and the axial traversing opening of which serves for the passage of the flux of the liquid. Both walls of this sleeve define between them an empt...
05/10/1988
4713272Longitudinally divided sleeve of shrinkable material
A longitudinally divided cable sleeve has a U-shaped clamp element which coacts with a flexible sheet of heat shrinkable material having a closure element formed along one longitudinal edge. The closure element has a base connected by a neck portion to a ...
12/15/1987
4693202Freeze resistant bottom well
A bottom well of a vessel having at least one of a bottom and a broad side has a wall and cover-plate structure attached to the bottom or broad side for, together, defining the bottom wall. An inner space within the bottom well of the vessel has inside su...
09/15/1987
4679599Safety hose
A safety hose having a stretchable elastomeric tube and cover that sandwich a twined reinforcement that exhibits a circumferential reinforcement component and a weaker longitudinal reinforcement component that breaks when the hose is stretched....
07/14/1987
4660524Fuel supply line
A fuel supply line for use with fuel injection devices of internal combustion engines is proposed, having supports to contain fuel injection valves. The fuel supply line has an elastic wall section, with which is connected a rigid wall section and on whic...
04/28/1987
4651781Distributed accumulator
A distributed accumulator integral constructed to form a hydraulic line for interconnecting components. The accumulator includes a non-porous flexible convoluted inner tube resiliently supported in a closed-cell, plastic foam shell, both being supported i...
03/24/1987
4649959Antiburst system for water lines
An antiburst system for water lines. A pipe has an inlet connected to a source of water and an outlet. A flexible tube is positioned in the pipe and is supported by a coiled spring extending along the longitudinal axis of the tube. An air vent section is ...
03/17/1987
4394534Cryogenic cable and method of making same
A cable for cryogenic use includes an inner conductor and a solid polymeric insulator loosely positioned about said inner conductor about 0° C. A collapsible spacer can be positioned between the inner conductor and the polymeric insulator to further spac...
07/19/1983
4321908Prevention of freeze damage to liquid conduits
Freeze damage to pipes containing liquids is accomplished by including in the interior of the pipe an elongated section of tubing sealed at each end and containing internally an inert gas under pressure; a means for attaching one end of the tubing to the ...
03/30/1982
4308856Protection against the freezing of solar collectors
A solar heat collector has a transparent cover and metal fins beneath the cover. Secured to each fin is a tube through which flows water to be heated, the tube having the general cross-sectional configuration of a figure eight and the tube being welded to...
01/05/1982
4281687Fluid storage device
A pump for precise, smooth delivery of liquid, particularly in liquid chromatography systems, featuring two liquid displacement elements mounted for reciprocating movement in chambers connected in series with two check valves, one displacement element ser...
08/04/1981
4272021Pipeline drain apparatus
A pipeline having a plurality of outlets spaced along its length is connected to a controllable supply of liquid under pressure. A transversely expandable and collapsible bladder is fixed in position within the pipeline interior and extends along its leng...
06/09/1981
4227512Means for protecting solar water heating equipment against frost damage
A solar water-heater absorber with upper and lower cylindrical headers has a rubber tube within each header. These tubes are sealed at one end and connected at the other ends to rigid copper tubes extending through sealed ends of the headers and connected...
10/14/1980
4215726Protective unit for water pipes and a method for setting the unit
A protective unit for water pipes comprising an expansible cylindrical member having pleats, a cylindrical cover having pleats, a cylindrical cover having ventilations therethrough and such a size as to cover the whole cylindrical member, and a metallic c...
08/05/1980
1    
 
Sign InRegister
Username  
Password   
forgot password?