Patent US4470785A successfully refreshed from Google Patents.
US4470785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for moulding a tire for a wheel rim
Assignee: Individual
•
Filing: 1983-01-27
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Granted: 1984-09-11
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Expires: 2003-01-27
Abstract
Abstract The invention relates to apparatus for moulding a tire for a wheel rim by means of a mould having mould parts, said mould parts being movable between a closed working position in which they enclose a mould cavity with the shape of the tire and an open position in which said mould parts are spaced apart, wherein in the open position of the mould parts a hollow tire core is positioned in the mould cavity while being receivable with respect to said parts, wherein the mould parts are moved into the working position, in which a residual cavity not occupied by the tire core is left free in the mould cavity, said mould defining the residual cavity being adapted to receive synthetic resin foam for moulding a tire body. Preferably the tire core is arranged on the wheel rim before being positioned with respect to the mould parts.
Inventors
- 👤 Arie Koorevaar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:12
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/0679; B29D30/02; B60; B60C; B60C7/00; B60C7/10; B60C7/12; B60C7/121; F; F16; F16H; F16H41/00; F16H41/24; F16H2041/246; Y; Y10; Y10S; Y10S264/00; Y10S264/83
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
135 words
A device for moulding a tire having a hollow, synthetic resin core of toroidal form and a covering of foamed, synthetic resinous material of generally crescent-shaped radial cross section thereon, said device comprising at least a pair of mould parts and means for moving said mould parts between an open position and a closed position, said mould parts having interior surfaces defining a tire mould cavity and including means for locating a synthetic resin tire core within said tire mould cavity to fill such cavity except for a generally crescent-shaped radial cross section residual cavity thereof defined between said tire core and said inner surfaces of the mould parts, and means for introducing synthetic resin foam material into said residual cavity to fill same and form a tire comprising said tire core and said covering.
Claim 2
Independent Claim
135 words
A device for moulding a tire having a hollow, synthetic resin core of toroidal form and a covering of foamed, synthetic resinous material of generally crescent-shaped radial cross section thereon, said device comprising at least a pair of mould parts and means for moving said mould parts between an open position and a closed position, said mould parts having interior surfaces defining a tire mould cavity and including means for locating a synthetic resin tire core within said tire mould cavity to fill such cavity except for a generally crescent-shaped radial cross section residual cavity thereof defined between said tire core and said inner surfaces of the mould parts, and means for introducing synthetic resin foam material into said residual cavity to fill same and form a tire comprising said tire core and said covering.
Claim 3
Dependent Claim
28 words
A device as defined in claim 1 wherein said means for locating comprises a rim on one of said mould parts and said tire core is fitted thereon.
Claim 4
Dependent Claim
15 words
A device as defined in claim 2 wherein said tire core is of closed form.
Claim 5
Dependent Claim
31 words
A device as defined in claim 1 wherein said means for locating comprises surfaces on said mould parts which clamp a wheel therebetween, said tire core being fitted on said wheel.
Claim 6
Dependent Claim
15 words
A device as defined in claim 4 wherein said tire core is of open form.
Claim 7
Dependent Claim
39 words
A device as claimed in claim 1 characterized by bearing means supporting the mould parts in the closed position so as to be rotatable about an axis of rotational symmetry of the mould cavity and by driving rotary means.
Claim 8
Dependent Claim
22 words
A device as claimed in claim 1 or 6 characterized by cooling means connected with at least one of the mould parts.
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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) | 1987-09-11 | 1988-03-12 | 1988-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-11 | 1992-03-12 | 1992-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-11 | 1996-03-12 | 1996-09-11 | $7700.00 | Window Closed / Lapsed |