Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 4350217 | Balance arm for flat weighing machines A balance arm for flat weighing machines has a rigid frame formed by girder-section rails extending between side beams. A pair of knife-edges are attached to each rail to extend parallel to the longitudinal axis thereof with the sharp edges of each pair o... | 09/21/1982 |
| 4274500 | Electrically price-calculating balance There is disclosed an electrically price-calculating balance, in particular a balance for a shop's counter, comprising an indicator part and a weighing part each constructed as a separate unit. The indicator part has an upper surface which is constructed ... | 06/23/1981 |
| 4249624 | Bending force receiver A bending force receiver has a bending rod which is supported in a main bearing and has a force introduction location. Strain gauges are mounted on the bending rod in a region between the main bearing and restraining means limiting axial movement of the b... | 02/10/1981 |
| 4123749 | Method and system for determining the presence of objects within a particular surveillance area, in particular for prevention of shoplifting A surveillance system for preventing shoplifting comprises marking elements made of material of high magnetic permeability attached to the goods in a store, and magnetic field generating coils generating a magnetic field in the exit areas from the store. ... | 10/31/1978 |
| 4110828 | Error preventing incremental measuring system An error preventing incremental measuring system utilizes a plurality of scanning elements associated to a relatively movable divided scale. But, instead of merely comparing the results of a plurality of independent channels originating at the scanning el... | 08/29/1978 |
