Brushing – scrubbing – and general cleaning – Implements – Brush or broom
Patent
1984-02-06
1985-02-12
Feldman, Peter
Brushing, scrubbing, and general cleaning
Implements
Brush or broom
A46B 910
Patent
active
044982119
ABSTRACT:
A folding brush comprises a case having parallel first and second walls respectively having first and second interior faces spaced from each other to form a cavity. The first wall includes a matrix of cylindrical like slots extending between the first face and a third face on the exterior of the first wall. A frame slides along a longitudinal axis in the cavity between a first retracted, locked position and a second fully extended, locked position. Multiple of tapered, unifilar, generally straight bristle tufts have bases mounted in the frame so longitudinal axes of the tufts rotate together from a first retracted angle displaced slightly from the frame longitudinal axis to a second fully extended angle approximately at right angles to the frame longitudinal axis in response to the frame sliding between the first and second longitudinal positions. The first angle, the geometry of the slots, the lengths of the tufts and the spacing between the first and third faces are such that when the bristles are in the retracted position a region on each tuft bears against an intersection between the first face and the slot in which the element is located so the region is cammed by the intersection to maintain the tufts in situ in the slot so the tip of the tuft is in the slot with no portion of the tip extending beyond the third face.
REFERENCES:
patent: 1189698 (1916-07-01), Keating
patent: 2981965 (1961-05-01), Kaye et al.
patent: 4103387 (1978-08-01), Anetseder, Jr. et al.
patent: 4121314 (1978-10-01), Nathe
Feldman Peter
O'Connor Michael
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