Patent US4100247A successfully refreshed from Google Patents.
US4100247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a disc wheel
Assignee: Worldwide Plastics Development Ltd
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Filing: 1976-03-04
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Granted: 1978-07-11
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Expires: 1996-03-04
Abstract
Abstract A method of manufacturing a disc wheel which is of generally Y-shape in cross sections radial of the rotary axis of the wheel, the stem of the Y providing the central disc of the wheel and having holes for the normal wheel bolts or studs, and the bifurcations of the Y providing the wheel rim. The wheel has an annular metal reinforcement having parts located in the stem and in one of the bifurcations of the Y, the reinforcement including holes corresponding to the holes in the finished wheel for the bolts or studs. A covering of plastics material is moulded over the reinforcement, the covering having an integral extension which provides the other bifurcation of the Y. The plastics covering is moulded onto the reinforcement in a mould cavity defined between first and second mould portions which are movable towards and away from one another in directions parallel to the rotary axis of the wheel between open and closed positions. The reinforcement is located in the mould cavity, at least at the start of the moulding by first and second series of abutments, each abutment of the first series engaging in one of said holes in the reinforcement and each abutment of the second series engaging the reinforcement at a position radially outwardly of the holes with respect to the rotary axis.
Inventors
- 👤 Terence Humphrey Charles Shead
- 👤 Frederick Leslie Hart
- 👤 Herbert John Sharp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:42
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/12; B29C33/123; B29C70/00; B29C70/68; B29C70/70; B29D; B29D99/00; B29D99/0032; B60; B60B; B60B5/00; B60B5/02; B29L; B29L2031/00; B29L2031/32
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
230 words
A method of manufacturing a disc wheel which is of generally Y-shape in cross sections radial of the rotary axis of the wheel, the stem of the Y providing the central disc of the wheel and having holes for the normal wheel bolts or studs, and the bifurcations of the Y providing the wheel rim, the wheel comprising an annular metal reinforcement having parts located in the stem and in one of the bifurcations of the Y, and a covering of synthetic resinous material for the reinforcement, the covering having an integral extension which provides the other bifurcation of the Y, the method comprising applying the synthetic resinous covering to the reinforcement by moulding in a mould having first and second portions which are movable towards and away from one another in directions parallel to the rotary axis of the wheel between open and closed positions, the reinforcement having holes therein corresponding to the holes in the finished wheel for said bolts or studs and being located at least at the start of said moulding in a mould cavity defined between said mould portions by first and second series of abutments, each abutment of the first series engaging in one of said holes in the reinforcement and each abutment of the second series engaging the reinforcement at a position radially outwardly of said holes with respect to said rotary axis.
Claim 2
Independent Claim
230 words
A method of manufacturing a disc wheel which is of generally Y-shape in cross sections radial of the rotary axis of the wheel, the stem of the Y providing the central disc of the wheel and having holes for the normal wheel bolts or studs, and the bifurcations of the Y providing the wheel rim, the wheel comprising an annular metal reinforcement having parts located in the stem and in one of the bifurcations of the Y, and a covering of synthetic resinous material for the reinforcement, the covering having an integral extension which provides the other bifurcation of the Y, the method comprising applying the synthetic resinous covering to the reinforcement by moulding in a mould having first and second portions which are movable towards and away from one another in directions parallel to the rotary axis of the wheel between open and closed positions, the reinforcement having holes therein corresponding to the holes in the finished wheel for said bolts or studs and being located at least at the start of said moulding in a mould cavity defined between said mould portions by first and second series of abutments, each abutment of the first series engaging in one of said holes in the reinforcement and each abutment of the second series engaging the reinforcement at a position radially outwardly of said holes with respect to said rotary axis.
Claim 3
Dependent Claim
34 words
A method according to claim 1 wherein the abutments of the first series remain fixed in position during moulding to provide interruptions in the synthetic resinous material covering around the bolt or stud holes.
Claim 4
Dependent Claim
47 words
A method according to claim 1 wherein the abutments of the first series are partly withdrawn during moulding so that the reinforcement is completely covered with synthetic resinous material in the vicinity of the bolt holes which are themselves formed by the abutments of the first series.
Claim 5
Dependent Claim
20 words
A method according to claim 1 in which the abutments of the second series remain fixed in position during moulding.
Claim 6
Dependent Claim
40 words
A method according to claim 1 wherein the abutments of the second series are withdrawn during moulding so as to allow the synthetic resinous material to flow into the spaces occupied by the abutments at the beginning of the moulding.
Claim 7
Dependent Claim
19 words
A method according to claim 1 wherein the synthetic resinous covering is applied to the reinforcement by compression moulding.
Claim 8
Dependent Claim
48 words
A method according to claim 6 comprising placing a charge of synthetic resinous dough-moulding compound in the second portion of the mould, placing the reinforcement in the second portion, placing a further charge of synthetic resinous dough-moulding compound on top of the reinforcement and then closing the mould.
Claim 9
Dependent Claim
46 words
A method according to claim 7 wherein the reinforcement is initially located with respect to the second portion by some of said abutments which are carried by said portion, the abutments being subsequently withdrawn into a position to support the reinforcement in the closed mould cavity.
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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) | 1981-07-10 | 1982-01-09 | 1982-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-10 | 1986-01-09 | 1986-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-10 | 1990-01-09 | 1990-07-11 | $7700.00 | Window Closed / Lapsed |