Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7588060 | Apparatus, system, and means for a modular backpressure sensor An apparatus, system, and means are disclosed for a modular backpressure sensor configured for use with a fluid delivery nozzle. The modular backpressure sensor may be installed and removed using simple tools and may optionally include an activator handle attachment... | 09/15/2009 |
| 7082406 | Multi-stage accounting system for a fueling environment A service station for the sale and dispensing of fuel into customers' vehicles and a method of optionally delivering a transaction accounting thereof to the customer, wherein the receipt station is located separately from the fuel dispensers. Costs to manufacture an... | 07/25/2006 |
| 6941978 | Vapor recovery system with ORVR compensation A fuel dispenser with a booted nozzle for vapor recovery is modified to include check valves in a vapor return path. The check valves selectively allow atmospheric air into the vapor return path to alleviate nuisance shut offs at the nozzle when an ORVR vehicle is b... | 09/13/2005 |
| 6923221 | Vapor recovery system with ORVR compensation A fuel dispenser with a booted nozzle for vapor recovery is modified to include check valves in a vapor return path. The check valves selectively allow atmospheric air into the vapor return path to alleviate nuisance shut offs at the nozzle when ORVR vehicle is bein... | 08/02/2005 |
| 5992479 | Dual function pressure/vacuum switch A fuel nozzle with both a Venturi shut-off mechanism and an electronic pressure switch shut-off mechanism. The increased reliability can be obtained at minimal increased cost if the two pressure-activated mechanisms are combined in a single housing so tha... | 11/30/1999 |
| 5613535 | Fuel dispenser shutoff switch A fuel dispensing unit shutoff switch is provided, the switch comprising: a fuel supply nozzle, having a fuel supply outlet, capable of being inserted into a fuel tank inlet conduit of a vehicle; a plurality of vacuum conduits, each vacuum conduit providi... | 03/25/1997 |
| 5435356 | Vapor recovery nozzle A vapor recovery nozzle has a dual passage hose connector, a fluid control body connected to the connector, a fluid turbine body connected to the fluid control body, and a fluid venturi body mounted within the fluid turbine body, a barrier flange and a va... | 07/25/1995 |
| 5394909 | Vapor control valve A vapor valve for use in conjunction with the fuel dispensing nozzle for capturing vapors returned through the nozzle to a storage area, the nozzle incorporating a body, a spout extending forwardly therefrom, and the nozzle having an operating latch pin a... | 03/07/1995 |
| 5255723 | Vapor recovery fuel dispensing nozzle A fuel dispensing nozzle includes a nozzle body and a projecting spout and surrounding bellows which define a fuel supply passage and a vapor return passage connected to corresponding concentric passages within flexible coaxial hoses. The body supports a ... | 10/26/1993 |
| 5224525 | Hose nozzle A hose nozzle for filling fluid into a tank and for shutting off automatically when the tank is filled is provided. The hose nozzle comprises a housing that has an inlet nozzle and an outlet pipe at opposite ends of the housing and a grip portion of an ar... | 07/06/1993 |
| 5197523 | Dispensing nozzle improvement for extracting fuel A fuel dispensing nozzle (10) has a body (12) including a fuel passage for fuel to flow from a source thereof through the body. A spout (18) is attached to the body in fluid communication therewith for fuel to flow into the spout from the passage. The dis... | 03/30/1993 |
| 5174346 | Fuel dispensing nozzle An improved fuel dispensing nozzle of significantly reduced size and weight has a single diaphragm that provides the vapor regulating function as well as providing the excess pressure and excess vacuum shut-off functions. Improved shut-off function is obt... | 12/29/1992 |
| 5141037 | Vapor recovery fuel dispensing nozzle A fuel dispensing nozzle includes a nozzle body and a projecting spout and surrounding bellows which define a fuel supply passage and a vapor return passage connected to corresponding concentric passages within flexible coaxial hoses. The body supports a ... | 08/25/1992 |
| 5035271 | Vapor recovery fuel dispensing nozzle A fuel dispensing nozzle includes a nozzle body and a projecting spout and surrounding bellows which define a fuel supply passage and a vapor return passage connected to corresponding concentric passages within flexible coaxial hoses. The body supports a ... | 07/30/1991 |
| 4984612 | Automatic shut-off liquid delivery nozzle A delivery nozzle is connected to the outlet end of a fuel supply hose and includes an outlet pipe. A valve is operatively associated with the discharge end of the outlet pipe for opening and closing the latter and an operator is provided for closing the ... | 01/15/1991 |
| 4919174 | Filling means An automatic shut-off nozzle for a vehicle servicing system can be rapidly mated to a receiver fitting on a fuel tank. Both the nozzle and the receiver have valves which are normally closed but which open when the nozzle is mated to the receiver. The nozz... | 04/24/1990 |
| 4733516 | Apparatus for filling bags The present invention relates to an apparatus for filling bags with a material and for sealing them, and it can carry the bags in a direction of a bag thickness. A first feature of the present invention resides in that, in the case that the bags are arran... | 03/29/1988 |
| 4697624 | Vapor recovery nozzle A vapor recovery nozzle is disclosed in which the main body of the nozzle has the vapor passage located above the fluid passage, so that the fluid valve is separated from the top of the nozzle by the vapor passage. Thus the valve may only be removed throu... | 10/06/1987 |
| 4418730 | Automatic shut-off nozzle with vapor return seal Liquid flow through an automatic shut-off nozzle is automatically stopped if the fill pipe opening of the tank being filled is not sealed so that vapor return means can carry vapor from a tank being filled to vapor recovery equipment. If the sealing means... | 12/06/1983 |
| 4372353 | Arrangements for sensing the presence of liquid in a vapor line An automatic shut-off nozzle has liquid flow through its vapor return means automatically stopped when liquid has filled the vapor line sufficiently to move a first valve to block the vapor return line. This blocking of the vapor return line by the liquid... | 02/08/1983 |
| 4343337 | Fuel dispensing nozzle A fuel dispensing nozzle having an aspirator valve which closes an aspirator line when there is a high negative or positive pressure in the fuel tank being filled, the closing of the aspirator line decreasing pressure in a chamber so that a shaft is relea... | 08/10/1982 |
| 4286635 | Automatic shut-off nozzle having an arrangement for controlling when automatic shut off occurs in response to pressure in a sealed tank An automatic shut-off nozzle has a diaphragm responsive to the vapor pressure in a sealed tank to stop the liquid flow through the nozzle when a predetermined pressure exists in the sealed tank. The force of a spring, which acts on the side of the diaphra... | 09/01/1981 |
| 4276916 | Sensing arrangements for sensing the presence of liquid in a vapor line An automatic shut-off nozzle has liquid flow through its vapor return means stopped in response to movement of an actuator by a flexible diaphragm when liquid has filled the vapor line sufficiently to move a float into engagement with the diaphragm. The a... | 07/07/1981 |
| 4141393 | Sealable fuel dispensing nozzle with automatic low-flow shut-off mechanism A fuel dispensing nozzle for a closed system holding a volatile fuel. The nozzle is adapted to sealably engage the filler pipe of a fuel tank to avoid passage of fumes to the atmosphere during a fuel transfer operation. The nozzle will automatically disco... | 02/27/1979 |
| 4133355 | Sealable dispensing nozzle with automatic shut-off Nozzle for a closed system holding a volatile fuel. The nozzle is adapted to sealably engage the filler pipe of a fuel tank whereby to avoid passage of fumes to the atmosphere during a fuel transfer operation. The nozzle will automatically discontinue fue... | 01/09/1979 |
| 4031930 | Automatic shut-off nozzle with lockable vapor relief valve A fuel dispensing nozzle has a diaphragm responsive to vacuum for shutting off the flow of fuel through the nozzle, the diaphragm chamber having a vent to atmosphere through a tube extending to the mouth of the nozzle spout and closeable by fuel in the ta... | 06/28/1977 |
| 4018252 | Anti-pollution nozzle assembly An anti-pollution nozzle assembly that removably engages the fuel inlet tube on an automotive vehicle and removes fuel vapor from the tank thereof at a rate that varies with the rate at which fuel is discharged into said tank by said nozzle assembly, with... | 04/19/1977 |
| 4016910 | Fuel dispensing nozzle with automatic shut-off responsive to vapor pressure A fuel dispensing nozzle has a diaphragm responsive to vacuum for shutting off the flow of fuel through the nozzle, the diaphragm chamber normally being vented to atmosphere by a tube extending to the mouth of the spout and closable by fuel in the tank be... | 04/12/1977 |
| 3974865 | Vapor collecting nozzle An automatic shut-off nozzle incorporating a vapor recovery system for recovering the displaced vapors from a gasoline storage tank or the like as the tank is being filled by the nozzle wherein the nozzle is automatically shut-off when the pressure within... | 08/17/1976 |
