Bizarre Patents
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.
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.
| Number | Title | Issue Date |
| 7815013 | Energy absorber for personal fall arrestor An energy absorber for use in a personal fall arresting system. The absorber contains upper and lower webbings which are each two ply members. The back ply of the upper webbing is mounted adjacent to the face ply of the lower webbing with said webbing being of about... | 10/19/2010 |
| 4843860 | Two stage impact beller A two stage impact beller has a rod driven pinch bullet that pre expands an end of a heat exchanger tube, and a belling tool which follows the pinch bullet. This die is generally bell shaped with a flared out proximal end. A jaw assembly holds the tube du... | 07/04/1989 |
| 4803843 | Low pressure refrigerant contaminant tester A low pressure refrigerant specimen is metered from a refrigeration system as a two phase mixture containing both a liquid phase and a gas phase. The mixture is sealed in an inflatable bag and the liquid phase is permitted to become a gas at atmospheric p... | 02/14/1989 |
| 4789025 | Control apparatus for refrigerated cargo container A method of closely controlling the supply air temperature delivered from an air conditioning unit into a mobile cargo container wherein the supply air temperature is compared to a desired set point temperature and a suction control valve in the air condi... | 12/06/1988 |
| 4776174 | Refrigerant recovery device A refrigerant recovery device comprises a pressure vessel filled with packings, such as Berl saddles, that provide a large surface area for mass transfer. The vessel is partly filled with a refrigeration-quality oil. The pressure vessel is mounted on a st... | 10/11/1988 |
| 4757690 | Water freezing enhancement for thermal storage brine tube The brine tube of an ice thermal storage tank has a surface enhancement which provides nucleation sites for ice formation, and reduces the need to superchill the water. The tubing enhancement comprises a multiplicity of solid mineral particles distributed... | 07/19/1988 |
| 4747275 | Apparatus for controlling flow through a centrifugal impeller An air conditioner unit that includes a housing containing a heat exchanger and a centrifugal impeller positioined behind the heat exchanger for drawing comfort air over the exchanger surfaces and returning the air to a comfort zone. A support wall is pla... | 05/31/1988 |
| 4616483 | Diffuser wall control In a motor driven centrifugal compressor having a diffuser containing a movable wall for varying the width of the diffuser passage, control equipment is provided for continually changing the wall position in response to changes in motor current.... | 10/14/1986 |
| 4589198 | Tube loading apparatus Apparatus for automatically loading a series of hairpin tubes into a magazine that is used to temporarily store the tubes so that they can be later laced into a fin pack. The magazine contains individual open-ended compartments for receiving and storing t... | 05/20/1986 |
| 4584765 | Apparatus for assembling tubes in a heat exchanger Apparatus for expanding hairpin tubes into a fin pack unit that involves a special clamping fixture for securing the belled ends of the tubes to hold the ends of the tubes immobile as tube expanders are passed through the tubes to expand the tube walls in... | 04/29/1986 |
| 4584751 | Apparatus for assembling fin plate heat exchangers A method and apparatus for automatically assembling hairpin tubes in the tube receiving holes of a fin pack unit. Pre-assembled fin pack units are serially moved from one station to the next to receive hairpin tubes, to have bells formed in the open ends ... | 04/29/1986 |
| 4527949 | Variable width diffuser A centrifugal machine having a variable diffuser that includes a radially disposed fixed wall and an opposed movable wall defining the diffuser passage. Guideways are formed in the movable wall in which a series of diffuser vanes are slidably mounted. A s... | 07/09/1985 |
| 4503684 | Control apparatus for centrifugal compressor A centrifugal compressor having a variable wall diffuser section that is controlled in response to measured system parameters in order to maintain the compressor at optimum efficiency over extended operating range.... | 03/12/1985 |
| 4480533 | Control for vent door A vent door control apparatus for use in an air conditioner that permits both manual and automatic positioning of the vent door. A series of push button function switches are arranged to move in contact with a series of cams to automatically unlatch the d... | 11/06/1984 |
| 4018583 | Refrigeration heat recovery system A combination vapor compression and refrigeration cycle employing a mechanical compressor for developing high temperatures. The suction end of the compressor is exposed to both the vapors discharged from the refrigeration evaporator and a mixture of oil f... | 04/19/1977 |
| 4007998 | Blade assembly An adjustable blade assembly for use in a rotary machine, such as a turbine or a compressor, wherein the airfoil is separable from the assembly at the blade platform. The airfoil is provided with a root which is seated within a complementary kerf formed w... | 02/15/1977 |
| 3997175 | Shaft seal assembly A shaft seal assembly employing oil breakdown bushings including bushing supports having a radial spring constant which permits the bushing to move radially with the shaft as the shaft is deflected and an axial spring constant whereby the bushing is able ... | 12/14/1976 |
| 3992898 | Movable expansion valve An expansion device for use in a reversible vapor compression refrigeration cycle for producing, upon demand, either heating or cooling. Two devices are mounted in opposed relationship in a supply line carrying refrigerant between a first heat exchanger a... | 11/23/1976 |
| 3990264 | Refrigeration heat recovery system A combination vapor compression and refrigeration cycle employing a mechanical compressor for developing high temperatures. The suction end of the compressor is exposed to both the vapors discharged from the refrigeration evaporator and a mixture of oil f... | 11/09/1976 |
| 3979155 | Flexible damped bearing support A flexible damped bearing for rotatably supporting a shaft within a machine including at least one helper spring mounted below the shaft and being arranged to act against the bearing to support the weight of the shaft and thus eliminate the effect of stat... | 09/07/1976 |
| 3979128 | Interface bushing for fluid-to-fluid shaft seal assembly A seal for use in a fluid-to-fluid shaft seal assembly as conventionally employed in a rotary machine. The seal includes a first and second ring encompassing the shaft and having a bushing seal interposed therebetween. A biasing member is arranged to act ... | 09/07/1976 |
| 3977211 | Alcohol separator An alcohol reclaiming apparatus for use in an absorption refrigeration system having a separator operatively connected to the system condenser for removing alcohol from liquid refrigerant prior to passing the refrigerant from the condenser section to the ... | 08/31/1976 |
| 3977204 | Alcohol circulation system An alcohol circuit for use in an absorption refrigeration system for circulating alcohol through the system along an independent path of travel which prevents the alcohol from stagnating within the evaporator section of the system. Further means are provi... | 08/31/1976 |
| 3968045 | Alkalinity reduction in an absorption refrigeration system Carbon dioxide gas is bled into an absorption refrigeration system to reduce the alkaline normality of an aqueous lithium bromide solution. The carbon dioxide reacts with lithium hydroxide contained in the solution to form a carbonate thereby reducing the... | 07/06/1976 |
| 3964662 | Sealing apparatus A seal suitable for use in a barrel-type rotary machine having an inner casing mounted within an outer casing to provide a chamber therebetween which is pressurized by exposing the chamber to high pressure fluids processed in the machine. One end of the c... | 06/22/1976 |
| 3961798 | Shaft seal assembly A fluid-to-fluid shaft seal assembly including at least one pressure breakdown bushing within the sealing region encompassing the shaft of a rotary machine and being loosely housed within the machine frame. The bushing includes an inwardly extended arm pa... | 06/08/1976 |
| 3941506 | Rotor assembly An impeller and shaft assembly suitable for use in an overhung compressor for facilitating mounting and rearranging impellers upon a shaft. A stud is threaded into the end of the shaft and the impeller slidably mounted thereon. An elongated key is inserte... | 03/02/1976 |
| 3936103 | Rotary shaft tilting shoe bearing A tilt shoe bearing assembly wherein each shoe in the assembly is provided with complete freedom to automatically adjust its position under various running conditions to offset critical running speeds by maintaining a fluid wedge between the shoe and the ... | 02/03/1976 |
| 3934752 | End wall closure apparatus An end wall closure device for supporting the end wall of a pressure vessel against axial movement when subjected to load conditions. A retaining member made up of a segmented shear key and a segmented compression key is inserted within an internal groove... | 01/27/1976 |
| 3930751 | Bucket locking mechanism A locking mechanism for preventing axial movement of side entry buckets mounted upon a rotor disc. The locking mechanism includes a pin loosely supported within a disc tang, the pin having a recessed shoulder arranged to abut against the platform of a fir... | 01/06/1976 |
