US5072479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrally molded sweeping implement
Assignee: SWEEPA INSTRUMENTS Pty Ltd
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Filing: 1990-06-15
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Granted: 1991-12-17
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Expires: 2010-06-15
Abstract
Abstract A sweeping implement is disclosed comprising an elongated head having an upper surface and a lower surface, a socket on the upper surface for attaching the head to a broomstick, and bristles projecting from the lower surface, wherein the head, the socket and the bristles are in the form of an integral moulding of a polymeric material and wherein the socket is provided with resiliently flexible retaining means on its inner surface for counteracting the removal of the broomstick from the socket. Some of the bristles may conveniently be of smaller diameter and others may conveniently be of larger diameter. The polymeric compound may comprise rubber and may be pre-formulated such that, upon vulcanization, the sweeping implement has a Shore hardness, as measured on the A scale, of between 35 and 65 and an elongation at break of between 550% and 650%.
Inventors
- 👤 Gerhard A. Van Niekerk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:46
CPC Classifications
A; A46; A46B; A46B9/00; A46B9/02; A46B3/00; A46B3/005; A46B2200/00; A46B2200/30; A46B2200/302; F; F16; F16B; F16B2200/00; F16B2200/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
130 words
A sweeping implement comprising an elongated head having an upper surface and a lower surface, a socket on the upper surface for attaching the head to a broomstick, and bristles projecting from the lower surface, the bristles, the socket and the head being in the form of an integral moulding of a polymeric material, the socket being provided with resiliently flexible retaining means on its inner surface for counteracting the removal of the broomstick from the socket, said retaining means comprising at least one substantially frusto-conically shaped ring tapering towards the base of the socket, the ring being adapted to form a vacuum which exercises a suction grip on the end of a broomstick inserted into the socket, when an attempt is made to remove the broomstick from the socket.
Claim 2
Dependent Claim
130 words
A sweeping implement comprising an elongated head having an upper surface and a lower surface, a socket on the upper surface for attaching the head to a broomstick, and bristles projecting from the lower surface, the bristles, the socket and the head being in the form of an integral moulding of a polymeric material, the socket being provided with resiliently flexible retaining means on its inner surface for counteracting the removal of the broomstick from the socket, said retaining means comprising at least one substantially frusto-conically shaped ring tapering towards the base of the socket, the ring being adapted to form a vacuum which exercises a suction grip on the end of a broomstick inserted into the socket, when an attempt is made to remove the broomstick from the socket.
Claim 3
Dependent Claim
55 words
A sweeping implement as claimed in claim 1, in which the bristles comprise thinner bristles and thicker bristles, the thicker bristles being suitable for sweeping particles of larger individual mass than the thinner bristles and for supporting the thinner bristles in use, the thinner bristles being of substantially the same length as the thicker bristles.
Claim 4
Dependent Claim
26 words
A sweeping implement as claimed in claim 2, in which the thinner bristles promote the development of static electricity, causing dirt particles to be attracted thereto.
Claim 5
Dependent Claim
95 words
A sweeping implement as claimed in claim 2, in which the thicker bristles are arranged in first longitudinal rows along the head and the thinner bristles are arranged in second longitudinal rows along the head, the first and second rows alternating along the transverse dimension of the head, the thicker bristles of one first longitudinal row being staggered in relation to the thicker bristles of an adjacent first longitudinal row, and the thinner bristles of a second longitudinal row being arranged opposite, along the transverse dimension, the thinner bristles of an adjacent second longitudinal row.
Claim 6
Dependent Claim
76 words
A sweeping implement as claimed in claim 2, in which the thicker bristles are arranged in at least one first longitudinal row along one of the long sides of the head and the thinner bristles are arranged in at least two second longitudinal rows along the head on the remainder of the lower surface, the thinner bristles of one second longitudinal row being staggered in relation to the thinner bristles of an adjacent second longitudinal row.
Claim 7
Dependent Claim
58 words
A sweeping implement as claimed in claim 1, in which the head is provided with a longitudinally extending transversely projecting blade which is also integrally moulded with the head, the socket and the bristles, the blade being provided with angled corners at its free or distal side, the angles being in the range of between 45° and 90°.
Claim 8
Dependent Claim
33 words
A sweeping implement as claimed in claim 1, having a Shore hardness as measured on the A scale, of between 35 and 65 and an elongation at break of between 550% and 650%.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-16 | 1995-06-17 | 1995-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-16 | 1999-06-17 | 1999-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-16 | 2003-06-17 | 2003-12-17 | $7700.00 | Window Closed / Lapsed |