Screw feed apparatus

Details Screw feed apparatus Screw feed apparatus

2007-03-06

2007-03-06

Joyce, William C. (Department: 3682)

Machine element or mechanism

Gearing

Directly cooperating gears

C074S424820

Reexamination Certificate

active

10401538

ABSTRACT:
A screw feed apparatus has a screw shaft having a screw groove formed on the outer peripheral surface thereof; a nut having a screw groove formed on the inner peripheral surface thereof opposed to the outer peripheral surface of the screw shaft; a large number of rolling elements rollably interposed between the two screw grooves of the screw shaft and nut; a circulation path disposed in the nut for returning the rolling elements to their original positions; and, a deflector piece disposed in the nut for connecting the circulation path to a rolling path formed between the two screw grooves, wherein the deflector piece includes a plurality of divisional pieces respectively formed rolling element guide grooves cooperating together in forming a rolling element guide path for guiding the rolling elements to the circulation path.

REFERENCES:
patent: 3580098 (1971-05-01), Goad
patent: 4905534 (1990-03-01), Andonegui
patent: 5005436 (1991-04-01), Brusasco
patent: 5142929 (1992-09-01), Simpson, III
patent: 5154091 (1992-10-01), Bianco
patent: 5193409 (1993-03-01), Babinski
patent: 5555770 (1996-09-01), Dolata et al.
patent: 5988007 (1999-11-01), Nishimura
patent: 6561053 (2003-05-01), Greubel
patent: 6581489 (2003-06-01), Ohkubo
patent: 6681651 (2004-01-01), Fujita
patent: 6851722 (2005-02-01), Chiu et al.
patent: 100 11 383 (2001-09-01), None

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