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 |
| 7240694 | Flow control valve for refrigeration system A flow control valve includes a valve body defining fluid inlet and outlet sections interconnected by a connecting port. A valve unit is disposed in the valve body and is operably connected to an actuator to be moved thereby for opening and closing the connecting po... | 07/10/2007 |
| 7219687 | Resettable bi-stable thermal valve A resettable thermal valve for controlling the flow of a fluid therethrough comprises a valve assembly housing having a fluid passageway therethrough and a valve coupled to the valve assembly housing and disposed at least partially within the fluid passageway. The v... | 05/22/2007 |
| 7028705 | High torque failsafe valve operator A fluid valve operator for moving a moveable valve element such as a disc (14) that is pressed forcefully against a surface of a valve frame (12). The valve operator includes first and second electric gear reduction motors (22, 24) that each has... | 04/18/2006 |
| 6651686 | Valve actuator system An actuator system for a system valve exposable to a source of system pressure. A piston within a sensing vessel is caused to move longitudinally from a first position to a second position in response to a designated system pressure. A first piston stem c... | 11/25/2003 |
| 6401741 | Excess flow shut-off valve An excess flow shut-off valve has a body with a flow passageway therethrough. A closure ball is rotatably supported within the body and has a flow passageway therethrough. The ball has a first rotational position in which the ball passageway is in alignme... | 06/11/2002 |
| 6152167 | Valve actuator with emergency shutdown feature A valve actuator with an emergency shutdown feature incorporates shutdown of the valve when a sensed line pressure is outside of high- and low-pressure trip points. The actuator can be manually tripped. The actuator can be tripped in the event of a fire o... | 11/28/2000 |
| 6148788 | Valve for liquids A valve for liquids including a valve housing (10) and a valve body (13) which is guided in the housing, and at least one releasable catch (16) which engages the valve body and holds the valve body in an open position in the valve housing until liquid sta... | 11/21/2000 |
| 5967177 | Pressure regulating valve A fuel pressure regulating valve for motor vehicles which decreases, the noise behavior of pressure regulating valves frequently found to be annoying. The pressure regulating valve includes a sealing gap, a first part, and a second part of a connection op... | 10/19/1999 |
| 5261446 | Self-contained emergency shutdown valve The improved valve of the present invention is a self-contained emergency safety shutdown valve which does not require the attendance of an individual or an outside power source for its emergency shutdown. The valve illustrated is a gate valve with the ga... | 11/16/1993 |
| 5240034 | Safety and automatic stop device, in particular for gas expansion stations A safety and automatic stop device for interrupting the flow of gaseous fluid along a main duct by tripping a safety valve member including a closing actuator for closing the safety valve member and an opening actuator for opening the safety valve member.... | 08/31/1993 |
| 5048791 | Shut off valve A resetable shut off valve includes a body (10) having an inlet (12) and an outlet (14). The inlet and outlet are connected in the valve body through a fluid passage which includes an opening (26). A movable plunger assembly (42) includes a seal disc (56)... | 09/17/1991 |
| 4913200 | Liquid dispensing nozzle with a pump pressure responsive automatic shut-off mechanism A liquid dispensing nozzle (10) with a pump pressure responsive automatic shut-off mechanism. The nozzle (10) comprises a body (12) with an internal passageway (13) therethrough defining an inlet port (14) for being connected to a dispensing pump and an o... | 04/03/1990 |
| 4768539 | Pipeline safety valve A surface pipeline safety valve having a tubular member telescopically movable in the housing for controlling the movement of a valve closure member, a rod piston and cylinder assembly contacting and moving the tubular member in response to pressure in th... | 09/06/1988 |
| 4708163 | Safety valve A subsurface safety valve. During normal well flowing conditions, the valve is spring biased to its open position. If the difference in fluid pressure flowing through the valve as compared to fluid pressure exterior to the valve exceeds a preselected valu... | 11/24/1987 |
| 4665945 | Pressure regulator for a fuel gas A pressure regulator for a fuel gas of the present invention operates to reduce the pressure of the fuel gas kept in a gas container to the predetermined pressure and then supply it to a burner through the secondary passage thereof. Further, the pressure ... | 05/19/1987 |
| 4665932 | Automatic safety device for fluid duct An automatically and independently operating safety device for triggering a total or partial closure of a guard or safety valve member when the velocity of a fluid circulating in a conduit attains a predetermined dangerous value. The device senses the sta... | 05/19/1987 |
| 4572255 | Liquid dispensing nozzle with a pump pressure responsive automatic shut-off mechanism An improved liquid dispensing nozzle (10) for dispensing a liquid such as fuel, from a dispensing pump. The improved dispensing nozzle comprises a body (12) defining an internal passageway (13) provided with an inlet port (14) for releasably connecting th... | 02/25/1986 |
| 4523602 | Pressure controller Disclosed is a pressure controller for sensing changes in a service pressure and controlling a control pressure in response to such changes. The pressure controller includes a valve body having a control inlet and a bleed outlet with a passage therebetwee... | 06/18/1985 |
| 4503883 | Gas pressure regulator with under and over shut-off A gas pressure regulator including an under and over pressure shut-off valve assembly has a toggle mechanism which "breaks" a critical connection when the outlet pressure gets too high.... | 03/12/1985 |
| 4457334 | Pressure sensitive valve actuator A pressure sensitive device for shutting off flow through a valve is disced. The device includes a pressure sensor having an integral atmospheric pressure reference for releasing a plunger to shut off flow through the valve. A manually operated eccentric... | 07/03/1984 |
| 4378818 | Well drilling float valve A float valve for use with drill pipe or drill casing or the like in a well is provided wherein a valving flapper can be set in a partially open position while lowering the drill pipe or drill casing into a well thereby allowing the drill pipe or casing t... | 04/05/1983 |
| 4192344 | Automatic emergency stop apparatus against counter flow and counter fire of gas bodies An automatic emergency stop apparatus which prevents counter flow and counter fire of gas bodies. The apparatus comprises a check valve, a cut-off valve and a filter unit. The check valve is positioned in the gas inlet portion of a decomposable closed-typ... | 03/11/1980 |
| 4173986 | Pressurized gas flow control valve and assembly thereof with reducer regulator A valve for supplying pressurized gas includes a pressure regulator and an outlet valved by a locking detent poppet valve responsive to pressure from the regulator. Upon a drop in pressure below a predetermined minimum valve the poppet valve moves from a ... | 11/13/1979 |
| 4161960 | High and low tubing pressure actuated well safety valve A well safety valve adapted to be positioned in a well tubing and close on either a predetermined high tubing pressure or a predetermined low tubing pressure. The valve closure member in the valve body moves between an open and closed position in response... | 07/24/1979 |
| 4067359 | Reset assembly for slam-shut valves A slam-shut valve or overpressure shutoff device used in series with, and upstream of, a pressure regulator to provide overpressure protection for apparatus downstream of the pressure regulator in the event of regulator failure. Overpressure or failure of... | 01/10/1978 |
| 4033374 | Latch assembly for slam-shut valves A slam-shut valve provides overpressure protection in a pipeline in the event of pressure regulator failure. The slam-shut valve is normally held in the open position by a latch assembly. Overpressure or failure of the regulator will automatically trigger... | 07/05/1977 |
| 3971403 | Safety valve A safety valve for fluids, comprising on the upstream side a first valve member openable to a degree dependent on the fluid throughput, and, on the downstream side, a second fully-opening valve member capable of being closed sharply by return mechanism an... | 07/27/1976 |
| 3965927 | Overrun valve for air pumps Apparatus is disclosed for controlling the rate of air flow in a pressurized air line, and for closing a valve when the air flow exceeds a predetermined maximum flow rate. The apparatus comprises a double air chamber with intermediate diaphragm for sensin... | 06/29/1976 |
