Threadless feed screw

Details Threadless feed screw Threadless feed screw

1982-05-10

1985-08-20

Bonck, Rodney H.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

74 25, F16H 2702

Patent

active

045356432

ABSTRACT:
An improved threadless feed screw mechanism includes elongated concentric inner and outer races radially spaced apart from each other with a cage positioned between the races. The cage includes a plurality of rollers each positioned in a slot, the slots having axes inclined relative to the axes of the races. The rollers are normally in contact with the facing surfaces of the inner and outer races. A portion of at least one of the facing surfaces is recessed providing a clearance for the rollers. As the rollers and cage move, the rollers advance along the slot relative to the cage. As each roller moves into the recessed area a cam member returns the roller to the opposite end of the slot.

REFERENCES:
patent: 676044 (1901-06-01), Locke
patent: 2944431 (1960-07-01), Dexter
patent: 3081639 (1963-03-01), Hauptman
patent: 3391722 (1968-07-01), Ligh
patent: 3903748 (1975-09-01), Krogsrud
patent: 3990317 (1976-11-01), Gilman et al.
patent: 4224831 (1980-09-01), Nilsson

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