Rotary feed mechanism

Details Rotary feed mechanism Rotary feed mechanism

1992-09-29

1995-02-07

Laub, David W.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

359704, 359823, F16H 2702, G02B 702

Patent

active

053867408

ABSTRACT:
A rotary feed mechanism including gears provided on an outer peripheral surface of an inner ring, male threads on an outer peripheral surface of an inner ring, and an outer ring having female threads which .engage with the male threads of the inner ring. At least one male thread formed between the gears of the inner ring is engaged with a female thread provided on the outer ring, and at least one pinion engages with at least one of the gears, regardless of the axial position of the inner ring with respect to the outer ring. When the at least one pinion is rotated, the rotation is transmitted to the inner ring, and the inner ring is moved in an optical axis direction, with respect to the outer ring, in accordance with the engagement between the male and female threads.

REFERENCES:
patent: 3370907 (1968-02-01), Cox et al.
patent: 4304463 (1981-12-01), Tomori
patent: 4324457 (1982-04-01), Tomori
patent: 4387968 (1983-06-01), Sekiguchi
patent: 4445757 (1984-05-01), Enomoto et al.
patent: 4910544 (1990-03-01), Nomura
patent: 4914461 (1990-04-01), Hori
patent: 5051764 (1991-09-01), Nomura
patent: 5052781 (1991-10-01), Iizuka
patent: 5164757 (1992-11-01), Nomura

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