Machine element or mechanism – Mechanical movements – Reciprocating or oscillating to or from alternating rotary
Patent
1995-11-03
1998-01-27
Marmor, Charles A.
Machine element or mechanism
Mechanical movements
Reciprocating or oscillating to or from alternating rotary
74 89, 744248R, 248429, F16H 2702
Patent
active
057111847
ABSTRACT:
A drive apparatus suitable for a power seat adjuster includes a rotatable lead screw disposed between an upper track movably mounted with respect to a stationary lower track. A drive block is rotatably mounted in the lower track for rotation about an axis extending perpendicular to the lower track. A first bore extends through the drive block for receiving the lead screw carried on the upper track. An insert body is movably mounted in a second bore in the drive block, the second bore extending transversely to and intersecting the first bore. A transverse, threaded third bore formed in the insert body threadingly engages the lead screw. The first bore has a larger diameter than the diameter of the lead screw to permit pivotal movement of the insert body and the lead screw about an axis extending through the second bore. The first bore also has a larger diameter than the third bore in the insert body to permit lateral movement of the insert body within the drive block while maintaining a first bore and the third bore in the insert body in communication.
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Montano Joseph C.
Pryor Thomas E.
Fenstermacher David M.
Lear Corporation
Marmor Charles A.
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