Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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US Patent 4158845 - Non-gimbaled pointer and tracking platform assembly
US Patent Issued on June 19, 1979
Estimated Patent Expiration Date:
March 31, 1998Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
March 31, 1998Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractA low-cost mechanical pointing and tracking platform that does not use gimbals and to which a sensor may be attached for use in searching an area for a target located at some unknown point. This is achieved with the use of a shaft, mounted intermediate its ends in a ball and socket joint and carrying at its forward end a platform for mounting a sensor. The other end of the shaft passes through a radial slot in a first rotatable member and extends into a spiral groove in a second rotatable member coaxial with the first. By manipulating the rotation of the two members, the sensor can be made to scan a circular, conical, spiral, linear or any other fixed or programmed complex pattern, can locate a target at any point in a two-dimensional field of view and can be made to track a target once it is detected. | InventorAssigneeApplicationNo. 05/891982 filed on 03/31/1978US Classes:343/759, Spiral motion244/3.16, Optical (includes infrared)74/86Rotary to gyratoryField of Search343/759Spiral motionExaminersPrimary: Lieberman, EliAttorney, Agent or FirmUS Patent References2528963, 2762234, 3225611, 3589208International ClassesH01Q 3/08 (20060101)H01Q 3/10 (20060101) |
