Screw for operation at high speed and high load

Details Screw for operation at high speed and high load Screw for operation at high speed and high load

1999-09-17

2000-07-18

Marmor, Charles A

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

74468, F16H 2902, F16H 5704

Patent

active

060891130

ABSTRACT:
A corresponding pair of male and female screw members includes alternately disposed rising and falling sloped surfaces on threads of the male and female screw members along a sliding direction of the threads. Depressions and projections are disposed continuously in a direction perpendicular to the sliding direction. One of the depressions or one of the projections resides between each adjacent pair of the sloped surfaces. A lubricating oil is placed between the threads of the male and female screw parts. An incline angle of the sloped surfaces is selected appropriately to increase a wedging action of the sloped surfaces against the lubricating oil film which occurs when the male screw member is rotated with respect to the female screw member.

REFERENCES:
patent: 3415138 (1968-12-01), Rumbarger et al.
patent: 3454136 (1969-07-01), Stark
patent: 3541875 (1970-11-01), Demorest
patent: 3651706 (1972-03-01), Galbarini et al.
patent: 3763959 (1973-10-01), Neugebauer
patent: 4741220 (1988-05-01), Watanabe et al.
patent: 4776229 (1988-10-01), Zona
patent: 5261810 (1993-11-01), Kamp et al.
patent: 5488880 (1996-02-01), Sartorio
patent: 5961267 (1999-10-01), Goss et al.

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