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Patent No. 5508049

Pizza Pie With Concentric Rings of Crust

A pizza mold for forming a plurality of concentric raised ridges of dough (i.e., crust) on the surface of a pizza pie.

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Class 165/155 - With communicating coaxial enclosure


Subclass of Class 165 - Heat exchange
Definition: Apparatus with means forming a third coaxial chamber communicating
No. of patents: 85
Last issue date: 03/20/2012


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NumberTitleIssue Date
8136582Water vaporizer with intermediate steam superheating pass
A vaporizing heat exchanger (10, 68) is provided for vaporizing a fluid flow using a thermal energy containing flow. Flow paths (24, 26, 28) for each of the fluid flow and the thermal energy containing flow are located relative to each other such that ...
03/20/2012
7337834Multi-channel heat exchanger and connection unit
The invention relates to a connection unit having a multi-channel heat exchanger with high-pressure channels and low-pressure channels and a connection element with a high-pressure reservoir and a low-pressure reservoir, both with a connection for connection. The ax...
03/04/2008
7287578Connection between a cooled double-wall pipe and an uncooled pipe and double-pipe heat exchanger including said connection
A connection between an uncooled pipe and a cooled double-wall pipe with between the walls a hollow space run through by cooling fluid let into the hollow space and taken from the hollow space through side passages connected to cooling fluid inlet and outlet ducts a...
10/30/2007
7228696Hybrid heating and cooling system
A heat and cooling system having an indoor air coil subcircuit, an outdoor air coil subcircuit, a geothermal subcircuit, and a control system for selectively operating the system in air-to-air heating, air-to-air cooling, geothermal heating, air-to-air defrost (opti...
06/12/2007
7228888Rotatable liquid reservoir for computer cooling
In a system for liquid cooling of electronics, where the electronics are subject to rotation in space, a liquid coolant storage tank includes a degassing and vortex-preventing structure to allow bubbles to float to the surface of the liquid inside the tank, and also...
06/12/2007
7213639Heat exchanger exhaust gas recirculation cooler
A two-pass, loop flow heat exchanger includes an inlet plenum that receives a fluid to be cooled, a housing, a plurality of inlet flow passages substantially centrally positioned within the housing and having a first end fluidly coupled to the inlet plenum to receiv...
05/08/2007
7146823Horizontal and vertical direct exchange heating/cooling system sub-surface tubing installation means
A sub-surface geothermal direct exchange sub-surface tubing installation means, comprising situating certain specified tubing sizes for certain specified horizontal distances and for certain specified depths within each of a horizontally oriented trench and a vertic...
12/12/2006
7143820Systems for improved heat exchanger
A system in which a heat exchanger includes a core, a plurality of fins extending outwardly from the core, and an element disposed within the cavity of the core. The heat exchanger also includes a first cap coupled to the first end of the core, and a second cap coup...
12/05/2006
7128156Wellbore rig with heat transfer loop apparatus
A rig, the rig useful in well operations, the rig having rig structure above the earth, and heat transfer loop apparatus connected to the rig for supplying heat transfer fluid for use on the rig, either from a loop or loops with portion(s) in water or portion(s) in ...
10/31/2006
7111671Heat exchanger having air drying device
A heat exchanger includes a container having an outlet and an entrance coupled to an inlet and an exit, a receptacle having an entering port and a discharging port for circulating a fluid medium and having an entering opening and a discharging opening. A casing is d...
09/26/2006
7096931Increased heat exchange in two or three phase slurry
Ribbed heat exchange tubes in which the aspect ratio of the ribs is less than 5, provide greater indirect heat exchange than conventional heat exchange tubes with or without fins, when used in a slurry comprising a liquid phase, in which is dispersed flowing gas bub...
08/29/2006
7096929PCM (phase change material) system and method for shifting peak electrical load
A PCM system and method of shifting peak electrical load is provided with a PCM system including a heat exchanger, a storage tank coupled to the heat exchanger for storing PCM slurry, a pump coupled to the heat exchanger, an air conditioning unit coupled to the heat...
08/29/2006
7040100Low-temperature dryer
A low-temperature dryer, especially a compressed air low-temperature dryer, for drying of a gaseous working fluid with cooling of the gaseous working fluid by use of a refrigerant comprises a pre-heat exchanger section (11) and a main heat exchanger section (...
05/09/2006
7025126Conduit assembly for fluid transfer
A conduit assembly for transferring heated fluid from a pump to a heat exchanger and to return cooled fluid from the heat exchanger to the pump is disclosed. The conduit assembly includes a flexible inner conduit disposed within a relatively rigid conduit. The heate...
04/11/2006
7000689Fluid connectors for heat exchangers
A fluid connector for providing an inlet/outlet connection to a connecting grid of a heat exchanger is disclosed in which the connector has a tubular body formed with an integral outwardly directed flange by means of which a fluid tight connection to the connecting ...
02/21/2006
6997249Fluid guidance piece with internal temperature equalization
The present invention relates to a fluid line member for a modular fluid line system for passing therethrough a crystallizing, heat-sensitive working fluid, such as a synthetic polymer, a cellulose derivative or a solution consisting of cellulose, water and amine ox...
02/14/2006
6938687Apparatus for transfer of heat energy between a body surface and heat transfer fluid
In apparatus for heat exchange to and from a body surface using a heat transfer liquid a heat exchanger comprises a plurality of elements within a casing connected axially against one another with spacer tube elements. Each element has its periphery spaced from the ...
09/06/2005
6932149Insulated sub-surface liquid line direct expansion heat exchange unit with liquid trap
A direct expansion geothermal heat exchange unit, which can be placed in sub-surface ground and/or water, consisting of at least one insulated refrigerant liquid/fluid line, with a liquid trap at the bottom of the liquid/fluid line, with at least one un-insulated re...
08/23/2005
6886361Liquid chiller evaporator
A shell and coil type heat exchanger evaporator provides cooling for industrial coolants characterized by high viscosity and a poor heat transfer coefficient. A large heat transfer surface area is provided within a limited volume, and without a high coolant pressure...
05/03/2005
6751983Air conditioning unit with an inner heat transfer unit
The invention relates to an air conditioning unit with a coolant circuit which consists of a compressor, an evaporator, a collector located at the low pressure side between the evaporator and the compressor and an inner heat transfer unit with a beat transfer channe...
06/22/2004
6729386Pulp drier coil with improved header
A steam heat exchanger for a wood pulp dryer includes a plurality of tubes. The tubes extend between the ends of the heat exchanger in parallel, spaced-apart relationship. There is a steam inlet header near a first end of the heat exchanger and an outlet header near...
05/04/2004
6688261Heating system for liquids
A heater comprises an enhanced-surface area heat transfer vessel which is situated co-axially in a hot flue gas plenum. The plenum is formed by dual-wall heating jacket. Liquid flowing through the jacket is heated co-currently by the flue gas before the p...
02/10/2004
6450252Oil changing unit having heat exchanger
An oil changing unit comprises a base having a disk configuration and forming a socket at a center thereof. The base further includes a manifold block thereunder and a first circular ridge formed on the base and surrounding said socket and a second circul...
09/17/2002
6390185Annular flow concentric tube recuperator
An annular flow concentric tube heat exchanger for heating two counter flowing fluid streams has been devised. Although capable of heating gases or liquids, the primary purpose of the invention is to function as an improved recuperator for recovering exha...
05/21/2002
6364007Plastic counterflow heat exchanger
A plastic heat exchanger which is simple and inexpensive. The heat exchanger includes an outer duct and a stack of inner ducts, the inner ducts for establishing a first flow path for cooling air or air to be cooled. Each inner duct includes end portions w...
04/02/2002
6354369Condensing and extraction apparatus
Apparatus and method for condensing moisture from an air stream. The condensing comprises concentric cylinders having a common wall. The outer cylinder contains a cooling material, such as water, and upon contact therewith, the air stream is cooled and mo...
03/12/2002
6293335Method and apparatus for optimizing heat transfer in a tube and shell heat exchanger
A tube and shell heat exchanger having a transversely oriented inlet port and a spirally coiled heat transfer tube contained within an arcuate chamber created by an internal baffle in which the water to be conditioned travels along a helical pathway in wh...
09/25/2001
6286587Freeze-protected heat exchanger
The freeze-protected heat exchanger comprises a fluid supply header for receiving a pressurized heated fluid and a drain chamber coextending with the fluid supply header for collecting and draining cooled fluid. A plurality of heat exchanger tubes extends...
09/11/2001
6253573High efficiency refrigeration system
An improved evaporator for a refrigeration system to reduce the temperature of a medium therein in which a first tube composed of a first material having a first thermal conductivity is surrounded by a body of a second material disposed in intimate contac...
07/03/2001
6245133Gas condensing and cooling system
A gas condensing and cooling system for cooling hot vaporous emissions from a hot vaporous emissions source to a level below prescribed regulatory limits that includes a cooling unit that operates using a readily available pressurized natural gas as the r...
06/12/2001
6019168Heat exchangers
A heat exchanger element comprises an outer tube (11), an inner tube (12) within the outer tube and a first fluid flow path for a first heat exchange fluid formed between the inner and outer tubes. A second heat exchange fluid is in heat transfer relation...
02/01/2000
5950712Method and apparatus for cooling and warming pole-mounted electronics
An apparatus for cooling and warming pole-mounted electronics includes a hollow pole having an upper portion capable of supporting the electronics and a lower portion supported by the ground. An air duct is disposed within the hollow pole such that the ho...
09/14/1999
5915619Heating system for automobiles
The present invention concerns a heating device for motor vehicles comprising a heat exchanger with primary and secondary circuits. The said exchanger is connected, through a system of ducts to the passenger compartment of the vehicle and/or to the front ...
06/29/1999
5899060Wall structure for fuel-cooled rocket engine walls
A wall structure for fuel-cooled engine walls, with a cooling structure having an inner wall to which hot gas is admitted; an outer wall located at a spaced location therefrom; as well as a plurality of webs, which connect the two walls and divide the int...
05/04/1999
5735342Heat exchanger
A heat exchanger system including an outer duct housing a powered fan at one end. A heat exchanger is positioned in line with the fan within the duct and includes two nested pipes. Each pipe includes radially outward fins and radially inward fins. The rad...
04/07/1998
5706888Geothermal heat exchanger and heat pump circuit
A heat exchanger and heat pump circuit having an operating subcircuit and a pump down subcircuit each including a liquid line and a heat transfer tube. The heat transfer tube of the pump down subcircuit surrounds the liquid line of the operating subcircui...
01/13/1998
5649589Safety annular heat exchanger for incompatible fluids
An annular heat exchanger for incompatible fluids, such as reactive compounds, particularly for the aeronautics industry, in which a sealed bottle is fixed interior of a hollow body, with integral heat dissipators and novel fluid passageway orientation, w...
07/22/1997
5647054Smoke generator tube
A smoke generator apparatus (10) is disclosed which is suitable for use in conducting air flow studies in wind tunnels. The smoke generator apparatus (10) includes a tube assembly (12) which may either be wire-packed or crimped and has fluid flow and heat...
07/08/1997
5551504Heat exchange element
Multi-passage heat exchange element which includes an elongated central first fluid passage for passage of a first fluid of a heat exchanger, a plurality of substantially helically convoluted second fluid passages for a second fluid of a heat exchanger, t...
09/03/1996
5509462Ground source cooling system
The present invention relates to one or more ground tubes connected and channelized to provide a counter-flow heat exchanger with an annular space to permit water injection into the subsurface water table....
04/23/1996
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