Leadscrew drive with annular-shell leadscrew

Machine element or mechanism – Mechanical movements – Reciprocating or oscillating to or from alternating rotary

Reexamination Certificate

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Details

C074S424710

Reexamination Certificate

active

07578211

ABSTRACT:
A leadscrew drive has a leadscrew follower, and a leadscrew. The leadscrew is formed as an elongated annular leadscrew shell having a thread-form outer surface. The leadscrew may be fabricated by depositing a leadscrew-shell material, such as nickel, onto a mandrel having a thread-form outer surface, so that the thread-form outer surface of the mandrel is replicated in an outer surface of the leadscrew-shell material. The mandrel may be removed, to leave a hollow leadscrew shell, or left in place.

REFERENCES:
patent: 5533417 (1996-07-01), Devenyi
patent: 5636549 (1997-06-01), Devenyi
patent: 198 31 940 (2000-01-01), None
patent: 0 261 431 (1988-03-01), None
patent: 62-159852 (1987-07-01), None
patent: 6-264985 (1994-09-01), None
patent: 8-129938 (1996-05-01), None
patent: 8-200466 (1996-08-01), None
patent: 2000-130543 (2000-05-01), None
patent: 2001-124173 (2001-05-01), None

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