Screw and nut mechanism

Details Screw and nut mechanism Screw and nut mechanism

1980-08-26

1982-12-21

Byers, Jr., Nile C.

Machine element or mechanism

Gearing

Directly cooperating gears

F16N 1118

Patent

active

043642829

ABSTRACT:
The invention relates to a mechanism with a screw (1) and a nut made of two sheet metal halves (4, 5) and having two complementary helical grooves (12, 13, 14, 15) which constitute raceways for a number of rolling bodies (16, 17) circulating in at least one closed loop around the screw. In order to provide a mechanism with small dimensions and good circulation conditions for the rolling bodies, the groove in a cylindrical portion of the nut surrounding the screw is provided with a recessed portion (18, 19) with a pitch that is different from the rest of the groove, said recessed portion constituting a return portion of the closed loop over a ridge (3) between two adjacent groove turns in the screw.

REFERENCES:
patent: 2236492 (1941-03-01), Costello
patent: 2581482 (1952-01-01), Hawkins
patent: 2618166 (1952-11-01), Douglas
patent: 2969689 (1961-01-01), Martens
patent: 3006212 (1961-10-01), Galonska
patent: 3176535 (1965-04-01), Rowland
patent: 3261224 (1966-07-01), Anthony
patent: 4272476 (1981-06-01), Benton

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