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Lawrence Welk, the bandleader who entertained millions of Americans over a generation of broadcasting his TV show, once received a patent: for a music-themed design of an ashtray.
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| Number | Title | Issue Date |
| 6988506 | Fluid transfer system A portable fluid transfer conduit is disclosed having an elongated flexible conduit having an inlet and outlet port. A coupling is postured at the inlet port for receiving fluid from a fluid source such as prelubrication pump. A flow control member is located at the... | 01/24/2006 |
| 6736164 | Pressure control valve for a fuel tank A pressure control valve for a fuel tank with a spring-loaded valve body is intended to combine a maximum sealing effect with an unobstructed and reliable response. This is achieved in that the valve body comprises a foot part and a plate, the foot part being guided... | 05/18/2004 |
| 6561219 | Portable fluid transfer conduit A portable fluid transfer conduit is disclosed having an elongated flexible conduit having an inlet and outlet port. A coupling is postured at the inlet port for receiving fluid from a fluid source such as prelubrication pump. A flow control member is loc... | 05/13/2003 |
| 6427458 | Apparatus and method for clearing air conditioning drain lines A device to clear a blockage from a drain line draining condensation from an air handler in an air conditioner or heat pump. A pump with check valves attaches to one end of a drain line which drains condensation from an air handler for an air conditioner ... | 08/06/2002 |
| 6357492 | Liquid changer A liquid changer includes a base, a liquid tank, a pump and a changeover valve. The base has two insert grooves for the liquid tank and the pump to fit therein to stand up. The changeover valve is located at one side of the pump. Switching the changeover ... | 03/19/2002 |
| 4497290 | Fuel system tester and primer A fuel system tester and primer includes a pump for pressurizing a fuel system, a fuel tank adapter, and a conduit for coupling the pump to the adapter. The fuel system tester and primer also includes a pressure release valve for venting excess pressure w... | 02/05/1985 |
| 4278114 | Kitchen appliance for storing perishable goods A container with an air tight lip incorporating a check valve for only evacuating air from the container by a piston suction pump sealed against the lip and around the check valve; the pump being arranged to receive manual pressure to produce the suction ... | 07/14/1981 |
