| 摘要 |
<p>1,031,855. Bearings. BURGESS PRODUCTS CO. Ltd. March 4, 1965 [March 5, 1964], No. 9350/64. Heading F2A. [Also in Division H2] A knife-edge pivot for a moving contact arm in an electric switch comprises a notch in a support member of non-precious metal carrying a fillet of precious metal, for example, platinum, palladium, rhodium, gold or silver, of one to three thousandths of an inch in thickness, such that the surface of the fillet forms the surface of the notch against which the knife edge bears. The fillet may be on the surface or inlaid. The base of the notch is flattened slightly to allow the knife edge an increased area of possible contact.</p> |
