US3793116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recapping of tires
Assignee: Bridgestone Bandag LLC
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Filing: 1971-02-04
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Granted: 1974-02-19
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Expires: 1991-02-04
Abstract
Abstract An envelope which is applied around a tire to surround at least that portion of the tire which requires recapping or other repair. The envelope comprises an elastic wrapper which has a marginal portion overlapping another portion of the wrapper or a portion of the tire and a sealing ring interposed between such portions and having an annular edge which bears against the adjoining surface to provide a fluidtight seal. The edge is urged against the adjoining surface in response to evacuation of gas from the area between the wrapper and the tire. The sealing action of the ring can be enhanced by employing a clamping ring which biases a portion of the wrapper against a portion of the sealing ring at one or both sides of the edge. The sealing ring may form an integral part of the wrapper or it may constitute a discrete part which is inserted between two portions of the wrapper or between the wrapper and the tire.
Inventors
- 👤 W Schelkmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:02
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/52; B29D30/54; B29D30/542; B29D30/58; B29D2030/582; Y; Y10; Y10S; Y10S156/00; Y10S156/909
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
141 words
In an envelope for use in recapping of a tire having a lateral annular surface and a circumferential face spaced from said annular surface and having a fresh tread placed thereon to form with said tire an assembly wherein an elastic wrapper encloses at least a portion of said tire and said fresh tread and comprises at least one annular marginal portion having an internal surface adjacent to said lateral annular surface of said tire, the improvement which consists in the provision of annular sealing means including a discrete rigid sealing ring interposed between said surfaces and having inner and outer sharp annular edge faces which bear against and provide with said surfaces a circumferentially complete seal to prevent penetration of gas into the area between said wrapper and said portion of said tire upon evacuation of gas from said area.
Claim 2
Dependent Claim
141 words
In an envelope for use in recapping of a tire having a lateral annular surface and a circumferential face spaced from said annular surface and having a fresh tread placed thereon to form with said tire an assembly wherein an elastic wrapper encloses at least a portion of said tire and said fresh tread and comprises at least one annular marginal portion having an internal surface adjacent to said lateral annular surface of said tire, the improvement which consists in the provision of annular sealing means including a discrete rigid sealing ring interposed between said surfaces and having inner and outer sharp annular edge faces which bear against and provide with said surfaces a circumferentially complete seal to prevent penetration of gas into the area between said wrapper and said portion of said tire upon evacuation of gas from said area.
Claim 3
Dependent Claim
18 words
The improvement as defined in claim 1, wherein said lateral surface of the tire is a smooth surface.
Claim 4
Dependent Claim
19 words
The improvement as defined in claim 1, wherein said sealing ring is a hoop-shaped ring of polygonal cross-sectional outline.
Claim 5
Dependent Claim
22 words
The improvement as defined in claim 1, wherein said sealing ring comprises a plurality of annular edges bearing against said one surface.
Claim 6
Dependent Claim
51 words
The improvement as defined in claim 1, wherein said sealing means further comprises a clamping ring arranged to bias a portion of said wrapper against said sealing ring, and mechanical biasing means operating between the tire and said clamping ring to urge the clamping ring against said portion of the wrapper.
Claim 7
Dependent Claim
20 words
The improvement as defined in claim 5, wherein the tire has a bead and said biasing means engages said bead.
Claim 8
Dependent Claim
36 words
The improvement as defined in claim 1, wherein said sealing ring is disposed in a plane which is substantially normal to the axis of the tire and has an annular projection provided with said one edge.
Claim 9
Dependent Claim
21 words
The improvement as defined in claim 1, wherein at least a portion of said sealing means consists of a metallic material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |