Celebrity Inventors
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 |
| 4386457 | Surgical blade remover-receptacle A device for removing a surgical blade from a scalpel handle includes a housing having an aperture. A surgical blade attached to a boss of the handle is inserted into the aperture. The boss is pressed downward into a narrow notch in the wall surrounding t... | 06/07/1983 |
| 4301658 | Control circuitry for thermoelectric cooler A portable cooler includes a urethane foam shell having a storage compartment and fan recess. An internal heat exchanger is mounted to a wall of the storage compartment and conducts heat out of the storage compartment by means of a thermally conductive bl... | 11/24/1981 |
| 4284847 | Audiometric testing, analyzing, and recording apparatus and method An audiometric testing system containing a processor and programmable analog circuitry for controlling frequency and intensity of audiometric test tones communicates with a remote data processing system via a communications link. The remote data processin... | 08/18/1981 |
| 4284846 | System and method for sound recognition Sounds produced by human or mechanical sources are recognized by comparison of certain waveform characteristic ratios with prestored ratios. Transitions and transition glides of characteristics are used to select certain stored groups of ratios for compar... | 08/18/1981 |
| 4280281 | Remotely adjustable sighting device for tractors A sighting device for attachment to the hood of the tractor is remotely adjustable by a driver seated in a driver's seat of the tractor to enable him to visually align the tractor with a swath or furrow previously cut in a field by a towed farm implement ... | 07/28/1981 |
| 4279043 | Transfer stand A rotatable transfer stand includes a base supported by a plurality of castors, a platform rotatably supported by means of bearings on the base and a support structure rigidly attached to the platform and partially surrounding a central standing area on t... | 07/21/1981 |
| 4278312 | Safety plug for arc welder connectors A safety plug for insertion into a female electrical connector of an arc welder includes an electrically insulating slotted male member which can be inserted and locked into a receptacle of the female electrical connector to avoid shorting of an exposed b... | 07/14/1981 |
| 4275512 | Sandal structure A durable sandal includes a composition rubber sole, a first composition rubber insole, and a unitary leather element including four straps and a second insole section of substantially the same shape as the first insole. Two of the straps having buckles a... | 06/30/1981 |
| 4274262 | Thermoelectric jug cooler and control circuit A thermoelectric cooler includes a base unit having an internal heat exchanger located on the upper surface of the base unit and an external heat exchanger disposed in a duct which is located in lower compartment of the base unit. A thermoelectric module ... | 06/23/1981 |
