Machine element or mechanism – Gearing – Directly cooperating gears
Patent
1992-09-23
1994-03-22
Bonck, Rodney H.
Machine element or mechanism
Gearing
Directly cooperating gears
74459, F16H 116, F16H 5517
Patent
active
052954064
ABSTRACT:
A ball screw and nut mechanism includes an elongated cylindrical screw having an outer helically threaded surface which extends through a cylindrical opening formed through a nut having a complementary helically threaded surface. A plurality of balls are disposed between the screw and the nut, each extending partially into both of the complementary threads to provide a rolling engagement between the screw and the nut. A load lock is provided to prevent the nut from moving axially relative to the screw when the balls are not present in the threads. The load lock includes a wire member which is generally helical in shape, having a pitch which is approximately equal to the pitch defined by the cooperating threads. The wire member is threaded partially through the threads, but does not normally inhibit rotation of the screw relative to the nut. The wire member is formed having a tang portion on one end thereof. The tang portion is adapted to be received within one of a plurality of recesses formed in an end face of the nut when the wire member is threaded therein. The cooperation of the tang portion with the recess functions to retain the wire member in position within the nut.
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patent: 3592072 (1971-07-01), Nilsson
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patent: 5142929 (1992-09-01), Simpson, III
Bonck Rodney H.
Dana Corporation
Laub David W.
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