Brushing – scrubbing – and general cleaning – Implements – Brush or broom
Patent
1988-09-26
1990-04-10
Hornsby, Harvey C.
Brushing, scrubbing, and general cleaning
Implements
Brush or broom
15392, 384208, 403122, 403135, A46B 902, A46B 1302, A47L 510, F16C 2308
Patent
active
049147773
ABSTRACT:
A self-aligning bearing structure for vacuum cleaner brushes and the like includes a plastic sleeve and a metal bearing element. The sleeve is initially formed with a flared end, allowing the bearing element to be inserted to provide a subassembly. The subassembly is then pressed axially into a cylindrical bore in the vacuum cleaner brush body. During such insertion, the flared end is deflected inwardly to produce a spherical socket which mates with a spherical periphery on the bearing element. Relative rotation between the sleeve and bearing element is prevented by a plurality of peripherally spaced teardrop-shaped projections formed on the sleeve which fit into teardrop-shaped recesses on the bearing element. The recesses are sufficiently closely spaced and are shaped in cooperation with the projections so that the recesses and projections automatically interfit upon assembly, and can therefore be assembled by automated equipment which does not require special orientation means. The interfitting projections and recesses prevent relative rotation between the sleeve and bearing element without requiring close tolerances in the manufacture of the components of the bearing.
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Haugland Scott J.
Hornsby Harvey C.
The Scott & Fetzer Company
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