Wire wound threaded elements including lead screws, roller not a

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

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744248R, 74459, 411411, 470 10, F16H 2524, B21H 302

Patent

active

056365497

ABSTRACT:
Producing novel threaded members such as lead screws (10, 20) by winding and anchoring a hardened tempered spring wire (14, 16) around a support body such as a screw shaft (11, 15) to form a hard, smooth thread comprising a wear-resistant running surface for engagement with a bearing nut member (43) in an adjustment assembly (30), such as for a zoom lens. The shaft (11) may be shallow-grooved (13) to determine the pitch of the threads. Alternatively the shaft (15) may be wound with contacting thread wire (16) and spacer wire (17) to determine the pitch of the thread.

REFERENCES:
patent: 306473 (1884-10-01), Findlay
patent: 534164 (1895-02-01), Larsh
patent: 1181971 (1916-05-01), Lovell
patent: 1231643 (1917-07-01), Parnall
patent: 1780825 (1930-11-01), Kuhn
patent: 2585304 (1952-02-01), Evans et al.
patent: 2616302 (1952-11-01), Wahlmark
patent: 3071022 (1963-01-01), Strandgren
patent: 3350811 (1967-11-01), Bender
patent: 3688852 (1972-09-01), Gaylord et al.
patent: 4226129 (1980-10-01), Henderson
patent: 5101213 (1992-03-01), Harada et al.

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