Tools – Wrench – screwdriver – or driver therefor – Spanner
Patent
1992-08-03
1993-11-30
Smith, James G.
Tools
Wrench, screwdriver, or driver therefor
Spanner
811246, 81461, 411403, 411427, 411455, 411919, B25B 1356
Patent
active
052655032
ABSTRACT:
A lug nut and socket wherein the socket and nut engage only selected point surfaces. In one aspect of the invention the socket has a decreased number of point surfaces. In another aspect of the invention, the lug nut has a decreased number of point surfaces. In another aspect of the present invention the socket points surfaces include point pins which are positioned to engage a pair of diametrically opposed point surfaces on the lug nut. The point pins are removably inserted into point pin wells extending into the lug nut socket. In another aspect of the present invention a retainer ring is provided to prevent the removable point pins from falling out during operation or handling, or otherwise being unintentionally removed. In another aspect of the present invention, the socket bore which engages a lug nut during operation is deliberately oversized to allow for considerable play between the lug nut and the socket.
REFERENCES:
patent: 1596708 (1926-08-01), Bellows
patent: 1685503 (1928-09-01), Pfauser
patent: 2372269 (1945-03-01), Golan
patent: 2770991 (1956-11-01), Myers
patent: 3134291 (1964-05-01), Barry
patent: 3140625 (1964-07-01), Pannozzo
patent: 3273442 (1966-09-01), Launay
patent: 3412635 (1968-11-01), Chmielewski
patent: 3519979 (1970-07-01), Bodenstein
patent: 3695124 (1972-10-01), Myers
patent: 4262562 (1981-04-01), MacNeill
patent: 4616535 (1986-10-01), Chiavon
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