US3878023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical bonding system for tire recapping
Assignee: Electra Bond Inc
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Filing: 1974-04-18
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Granted: 1975-04-15
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Expires: 1994-04-18
Abstract
Abstract A pressure chamber is provided with a locking closure and electrically conducting tire support means for mounting tires to be recapped and connectors for the connection of electrical heating wires of the tires to the support members for controlled heating of the tires and application of pressure thereof in the closed chamber.
Inventors
- 👤 Warren L Dexter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:39
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/0016; B29D30/06; B29D30/52; B29D30/54; B29D2030/545; Y; Y10; Y10S; Y10S156/00; Y10S156/909
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
156 words
A system for applying heat and pressure to recap tires wherein a tire carcass has layered rubber and heating wires disposed thereabout with new tire tread thereover and gripped thereon by circumferential conducting hoops electrically connected to said heating wires comprising a shell having first and second separable portions and means for locking said portions together in pressure sealing relation, a pair of electrically conducting support members mounted in a first shell portion in insulated relation thereto for mounting tires to be recapped, said support members having connecting means for engagement with electrical connections from tires mounted on said members, controllable power supply means connected to said support members for energizing the heating wires of tires mounted on said members, and pressurizing means connected to said shell for pressurizing the interior thereof when said shell portions are connected together to apply a pressure to tires on said support members for vulcanizing nEw tread to the tires.
Claim 2
Independent Claim
156 words
A system for applying heat and pressure to recap tires wherein a tire carcass has layered rubber and heating wires disposed thereabout with new tire tread thereover and gripped thereon by circumferential conducting hoops electrically connected to said heating wires comprising a shell having first and second separable portions and means for locking said portions together in pressure sealing relation, a pair of electrically conducting support members mounted in a first shell portion in insulated relation thereto for mounting tires to be recapped, said support members having connecting means for engagement with electrical connections from tires mounted on said members, controllable power supply means connected to said support members for energizing the heating wires of tires mounted on said members, and pressurizing means connected to said shell for pressurizing the interior thereof when said shell portions are connected together to apply a pressure to tires on said support members for vulcanizing nEw tread to the tires.
Claim 3
Dependent Claim
30 words
The system of claim 1 further defined by said support members comprising horizontally extending, parallel, spaced-apart metal rods mounted in insulated relation to the interior of said first shell portion.
Claim 4
Dependent Claim
38 words
The system of claim 2 further defined by an upright structural insulator engaging said first shell portion and said support members in spaced relation to the engagement of support members and shell portion for bracing the support members.
Claim 5
Dependent Claim
79 words
The system of claim 1 further defined by said shell portions having open ends facing each other, said first shell portion being mounted in fixed position, means mounting said second shell portion for translation thereof toward and away from said first shell portion, and a locking ring disposed about the open end of said first shell portion in rotatable relation thereto for engagement with said second shell portion about the open end thereof for sealing said shell portions together.
Claim 6
Dependent Claim
73 words
The system of claim 4 further defined by said second shell portion being mounted upon a track for movement in line with said first shell portion, piston drive means connected to said second shell portion for movement of said second shell portion along said track into and out of engagement with said first shell portion, and piston means engaging said locking ring for rotating said ring to seal and unseal said shell portions.
Claim 7
Independent Claim
148 words
A system for pressurizing tires during heating of tires for recapping wherein the tires include cushions having embedded heating wires with base strips connected thereto about opposite tire sides comprising means defining a pressure chamber including a hollow cylinder with an open end and a relatively movable end plate adapted to close said open end, tire support means mounted on said end plate in extension toward said cylinder and including a pair of electrical conductors adapted for connection across power supply means, electrical connectors for connecting base strips on opposite sides of said tires to separate conductors for passing current through the heating wires to heat the tires, locking means adapted to engage said cylinder and end plate for sealing same together, and pressurizing means extending into said chamber for pressurizing the interior thereof to apply bonding pressure to tires mounted on said support means within said chamber.
Claim 8
Independent Claim
148 words
A system for pressurizing tires during heating of tires for recapping wherein the tires include cushions having embedded heating wires with base strips connected thereto about opposite tire sides comprising means defining a pressure chamber including a hollow cylinder with an open end and a relatively movable end plate adapted to close said open end, tire support means mounted on said end plate in extension toward said cylinder and including a pair of electrical conductors adapted for connection across power supply means, electrical connectors for connecting base strips on opposite sides of said tires to separate conductors for passing current through the heating wires to heat the tires, locking means adapted to engage said cylinder and end plate for sealing same together, and pressurizing means extending into said chamber for pressurizing the interior thereof to apply bonding pressure to tires mounted on said support means within said chamber.
Claim 9
Dependent Claim
105 words
The system of claim 6 further defined by said cylinder and end plate having a track therebetween for carrying one portion of said chamber defining means toward and away from the other, drive means for moving said one portion of said chamber defining means into and out of engagement with the other along said track, means actuating said locking means to move same between lock and unlock position, and interlock means controlled by the means actuating said locking means to enable electrical connection of power supply means across said electrical conductors and pressurization of said chamber only in the lock position of said locking means.
Claim 10
Dependent Claim
90 words
The system of claim 6 further defined by said tire support means comprising a pair of rigid parallel electrically conducting bars extending from said end plate a distance slightly less than the depth of said hollow cylinder, said bars extending through said end plate in insulated relation to each other and to said end plate for connection across a power supply exteriorly of said pressure chamber and said bars being braced on the inner side of said end plate to support tires through which the bars are adapted to extend.
Claim 11
Dependent Claim
48 words
The system of claim 6 further defined by a crane mounted for movement laterally of said pressure chamber across the ends of said tire support means with hook means adapted to be flexibly raised and lowered whereby tires may be swung onto and off of said support means.
References Cited (Backward Citations)
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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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |