Machine element or mechanism – Mechanical movements – Grip units and features
Patent
1978-08-03
1981-05-05
Staab, Lawrence J.
Machine element or mechanism
Mechanical movements
Grip units and features
474171, 474182, 474199, F16H 1508, F16H 5544
Patent
active
042651336
ABSTRACT:
A sheet metal drive disc-pulley assembly adapted for driving rotation by a V-belt to drive a friction wheel such as that in a lawn mower or other mechanism using a drive assembly. Two of three, coaxial, circular pieces of sheet metal define a bearing pocket, which axially and radially locates a bearing unit, and a V-belt receiving groove which, in the preferred embodiment, is spaced outwardly and radially aligned with the bearing pocket for proper resistance to belt tension. The marginal edge of the generally planar, third piece is bent and clamped around the periphery of a conical brace extending from the flared edge of the V-belt groove on one of the first two pieces to form a radially extending friction wheel engaging disc. Either the third piece, or a fourth circular piece of sheet metal clamped between the third piece and conical brace, may radially locate a second, axially self-locating bearing unit which is coaxial and spaced an axial distance from the first bearing unit to prevent preloading of the assembly and to reduce rotational wobble due to any bearing eccentricities or slight bearing misalignment. The bearing units preferably include internal seals. An external seal retained by the bearing pocket may also be included.
REFERENCES:
patent: 1627558 (1927-05-01), Grunwald
patent: 2595203 (1952-04-01), Reeves
patent: 2655813 (1953-10-01), Howell
patent: 2669878 (1954-02-01), Nelson
patent: 3813954 (1974-06-01), Price et al.
Van Der Meulen Douglas J.
Weis Siegfried K.
C. L. Frost & Son, Inc.
Staab Lawrence J.
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