Screw jack

Details Screw jack Screw jack

1975-11-24

1977-01-04

Jones, Jr., James L.

Implements or apparatus for applying pushing or pulling force

Screw

Geared

B66F 316

Patent

active

040008800

ABSTRACT:
A powdered metal gear is disclosed for use in an accommodating screw jack. The gear has a planar face, and teeth of generally truncated tetrahedronal shape are disposed around the circumference. A conical gear undersurface acts, with intertooth recesses, to form a first gear portion of substantially uniform material thickness. Scallop indentations in the undersurface mate with the gear teeth themselves to form a second gear portion of substantially uniform material thickness.

REFERENCES:
patent: 1694243 (1928-12-01), Wilford
patent: 2107715 (1938-02-01), Runyan et al.
patent: 2254085 (1941-08-01), Nilson

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