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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 123/68 - Pump compression


Subclass of Class 123 - Internal-combustion engines
Definition: Two-cycle internal-combustion engines in which the combustible
No. of patents: 54
Last issue date: 10/04/2011


1    
NumberTitleIssue Date
8028665Selective compound engine
The fuel efficiency of an internal combustion reciprocating piston engine may be increased through selective secondary expansion of exhaust gas in the engine cylinders in order to recover exhaust gas energy which is otherwise wasted by cylinder blow-down at the end ...
10/04/2011
7954462Split-cycle air hybrid engine
A split-cycle air hybrid engine operatively connects an air reservoir to a split cycle engine. A power piston is received within a power cylinder and operatively connected to a crankshaft such that the power piston reciprocates through an expansion stroke and an exh...
06/07/2011
7954461Split-cycle four-stroke engine
An engine has a crankshaft, rotating about a crankshaft axis of the engine. An expansion piston is slidably received within an expansion cylinder and operatively connected to the crankshaft such that the expansion piston reciprocates through an expansion stroke and ...
06/07/2011
7954463Split-cycle four-stroke engine
An engine has a crankshaft, rotating about a crankshaft axis of the engine. An expansion piston is slidably received within an expansion cylinder and operatively connected to the crankshaft such that the expansion piston reciprocates through an expansion stroke and ...
06/07/2011
7950357Method for operating an internal combustion engine and an internal combustion engine
An engine comprises a power cylinder having a power chamber, a compression cylinder having a compression chamber and a flow-through chamber connected with the compression chamber when a flow-through valve is open and connected with the power chamber when an intake v...
05/31/2011
7942117Engine
An engine includes two or more serially connected air compressors coupled via a crankshaft to an expander piston and cylinder combination. An intercooler device is placed between the air compressors. Compressed air from the compressors flows through a heat exchanger...
05/17/2011
7905204Internal combustion engine and method with improved combustion chamber
Constant pressure internal combustion engine having compression and expansion chambers of variable volume, an elongated combustion chamber of substantially constant volume between the compression and expansion chambers, and a fuel inlet for introducing fuel into the...
03/15/2011
7757644Internal combustion engine and method with improved combustion chamber
Constant pressure internal combustion engine having compression and expansion chambers of variable volume, an elongated combustion chamber of substantially constant volume between the compression and expansion chambers, and a fuel inlet for introducing fuel into the...
07/20/2010
7748352Internal combustion engine and method with improved combustion chamber
Constant pressure internal combustion engine having compression and expansion chambers of variable volume, an elongated combustion chamber of substantially constant volume between the compression and expansion chambers, and a fuel inlet for introducing fuel into the...
07/06/2010
7748351Internal combustion engine and method with improved combustion chamber
Constant pressure internal combustion engine having compression and expansion chambers of variable volume, an elongated combustion chamber of substantially constant volume between the compression and expansion chambers, and a fuel inlet for introducing fuel into the...
07/06/2010
7690337Spark plug location for split-cycle engine
A split-cycle engine includes separate compression and expansion cylinders connected by a crossover passage. Crossover compression and expansion valves define a pressure chamber between them in the crossover passage for storing pressurized gas prior to timed deliver...
04/06/2010
7658169Internal combustion engine and method with improved combustion chamber
Constant pressure internal combustion engine having compression and expansion chambers of variable volume, an elongated combustion chamber of substantially constant volume between the compression and expansion chambers, and a fuel inlet for introducing fuel into the...
02/09/2010
7603970Split-cycle air hybrid engine
A split-cycle air hybrid engine operatively connects an air reservoir to a split cycle engine. A power piston is received within a power cylinder and operatively connected to a crankshaft such that the power piston reciprocates through an expansion stroke and an exh...
10/20/2009
7467608Air injection engine
An internal combustion engine of the present invention features separate compression and expansion cycles. The engine includes a separate compressor device which pressurizes air by a ratio greater than 15 to 1, at least one two stroke combustion cylinder and a compr...
12/23/2008
7389755Tandem-piston engine
The piston rod of the tandem-piston engine was modified to include a crosshead that slides in a crosshead guide machined into the lower part of the charger piston for better lateral support. The lower surface of the motor piston was changed to a simple conical surfa...
06/24/2008
7353786Split-cycle air hybrid engine
A split-cycle air hybrid engine operatively connects an air reservoir to a split cycle engine. A power piston is received within a power cylinder and operatively connected to a crankshaft such that the power piston reciprocates through an expansion stroke and an exh...
04/08/2008
7273023Steam enhanced double piston cycle engine
A steam enhanced dual piston cycle engine utilizes a unique dual piston apparatus that includes: a first cylinder housing a first piston therein, wherein the first piston performs only intake and compression strokes; a second cylinder housing an inner power piston t...
09/25/2007
7240480Dual Combustion Mode Engine
An internal combustion engine is disclosed in which at least one cylinder is adapted to run in homogeneous-charge compression-ignition (HCCI) combustion mode and at least one cylinder is adapted to run in spark-ignition (SI) combustion mode with the HCCI cylinder ha...
07/10/2007
7140182Energy storing engine
The Energy Storing Engine is the mechanization of a hot air engine cycle. Constant temperature compression is achieved by using a multi-stage-intercooled compressor. Energy is stored in a compressed air tank. Heat is added at constant pressure by an exhaust gas to c...
11/28/2006
7055494Low heat generation fuel injection system
When an electronic control unit (ECU) performs post-injection operation, the ECU intermittently implements a post-injection suspending pattern for suspending output of a post-injection command signal after outputting a normal injection command signal. The ECU implem...
06/06/2006
7007639Air injection engine
An internal combustion engine of the present invention features separate compression and expansion cycles. The engine includes a separate compressor device which pressurizes air by a ratio greater than 15 to 1, at least one two stroke combustion cylinder and a compr...
03/07/2006
6655327Combustion method for an internal combustion engine
A combustion method at a piston combustion engine showing a combustion chamber, in which a piston repeatedly moves in a work producing power stroke followed by an exhaust stroke with intermediate upper respective lower dead centers, in which dead centers ...
12/02/2003
6546901Two cycle internal combustion engine
A crankshaft driven positive displacement gear type air compressor enclosed within the engine housing forces air in between the compressor and reciprocating means. At approximately top dead center fuel is injected into the engine and burns. The high press...
04/15/2003
5857436Internal combustion engine and method for generating power
An internal combustion engine includes a compression cylinder having an air inlet and outlet, a conduit extending from the compression cylinder air outlet, an expansion cylinder of larger diameter than the diameter of said compression cylinder and having ...
01/12/1999
5755191Two-stroke internal combustion engine with charging cylinder
The invention concerns a two-stroke internal-combustion engine with a charging pump, an outlet channel controlled by the main piston being subjected to additional control by the charging-pump plunger. Circulation losses are minimized and a higher means wo...
05/26/1998
5694891Internal combustion engine
In an internal combustion engine having at least one working cylinder, a reciprocating working piston is connected by a piston rod to a second piston which can reciprocate in a supercharge cylinder. The common piston rod is also connected with a crank dri...
12/09/1997
5638681Piston internal-combustion engine
The invention concerns a piston internal-combustion engine with separate compression (K) and expansion (E) chambers and a compressed-gas transfer device (7) which feeds compressed gas from the compression chambers to the expansion chambers at the beginnin...
06/17/1997
5615644Valve arrangement in an internal combustion engine
A valve arrangement in an internal combustion engine, into which engine the air-fuel mixture is directly injected by relative pumping elements from a pressure chamber towards at least one cylinder provided with a valve aperture with its relative valve loc...
04/01/1997
5341774Self supercharged two stroked cycle and engine having migrating combustion chambers
Non-symmetrical port timing techniques in combination with the 90 degree phase difference between the pumping and combustion chamber of the two stroke migrating combustion chamber engine variant are disclosed as a special cycle of operation which allows a...
08/30/1994
5103645Internal combustion engine and method
Disclosed are methods of and means for an improved internal combustion engine performance and of substantially reduced or eliminated pollutants. A relatively slow and long burning combustion is provided which produces an exhaust of high pressure which can...
04/14/1992
4748811Supercharged diesel type apparatus for the generation of power
A power production apparatus comprises a Diesel engine having a plurality of sequentially operating motor cylinders and a plurality of alternating air compressor cylinders. Each motor cylinder has scavenge ports connected to receive scavenging air from th...
06/07/1988
4635590Internal combustion engine and operating cycle therefor
An internal combustion engine includes a plurality of cylinders arranged parallel to and equally spaced from a longitudinally extending engine axis with a pair of opposed pistons mounted in each cylinder for controlled reciprocation therein. Respective ro...
01/13/1987
4592309Internal combustion engine
The present invention relates to an improved internal combustion engine which separates the compression stroke from the power generator. In particular, the invention utilizes a cam profiled power shaft of a shape to accomodate the new movement of the powe...
06/03/1986
4520765Internal combustion engine and operating cycle therefor
An engine and method in accordance with this invention includes a plurality of parallel cylinders equally spaced from a longitudinally extending engine axis with a pair of opposed pistons in each cylinder for controlled reciprocation therein. Respective r...
06/04/1985
4506634Internal combustion engine
An engine in which the compression and expansion functions are separated to enable: higher efficiency by eliminating inlet throttling, providing stable lean combustion of premixed or injected fuel, by allowing more complete expansion and reduced heat tran...
03/26/1985
4489558Compound internal combustion engine and method for its use
A compound internal combustion engine having an efficiency materially higher than that of an engine operating on the conventional Otto or Diesel cycle. This is accomplished by using the heat of the exhaust gases to compress air, with or without the additi...
12/25/1984
4489560Compound internal combustion engine and method for its use
A compound internal combustion engine having an efficiency materially higher than that of an engine operating on the conventional Otto or Diesel cycle. This is accomplished by using the heat of the exhaust gases to compress air, with or without the additi...
12/25/1984
4476821Engine
An engine has preferably coupled together a reciprocating air compressor discharging through a heat exchanger into a reciprocating cylinder piston combination, the flow into the piston cylinder combination being controlled by a cam-actuated inlet valve wh...
10/16/1984
4473051Internal combustion engine
An illustrative embodiment of the invention provides a four cycle internal combustion engine that produces one power stroke for each full rotation of the crankshaft. Direct fuel and oxidizer injection into the cylinder permits engine speed and power to be...
09/25/1984
4458635Two-cycle internal combustion engine
In a valve in head two-cycle internal combustion engine, a slave piston and a power piston reciprocate in a pair of parallel cylinders. Valve opened and closed intake and exhaust ports respectively communicate with the slave piston and power piston cylind...
07/10/1984
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