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US3966535A
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US
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Envelope sealing apparatus for cold process tire retreading
Assignee: Oliver Rubber Co
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Filing: 1975-01-15
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Granted: 1976-06-29
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Expires: 1995-01-15
Abstract
Abstract Apparatus is provided for sealing an envelope around a tire casing during a cold process retreading operation, and which comprises a pair of annular pressure members which are mounted on the casing support rim, and which serve to hold and seal the envelope against the flanges of the rim thereby assuring a perfect seal throughout the envelope area. The apparatus also comprises means for readily mounting the annular members on the rim, and for holding the pressure members in their sealing positions. The latter means also permits the pressure members readily to be demounted from the rim.
Inventors
- 👤 Antonio Dabura Abularach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:59
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/52; B29D30/54; B29D30/542; Y; Y10; Y10S; Y10S156/00; Y10S156/909
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
168 words
Apparatus for holding and sealing an envelope about a tire casing and tread strip assembly during a cold vulcanization operation, which includes: a rim member for supporting a tire casing said rim member having outwardly extending radial flanges on the outer peripheral surface thereof at opposite ends thereof for receiving the ends of the envelope adjacent to the respective outer surfaces of the flanges; an annular pressure member mounted on each end of the rim member adjacent to the outer surface of a corresponding one of the flanges with the ends of the envelope being received between the pressure members and the flanges; axially extending guide means formed on the rim member at the opposite ends thereof and at spaced angular positions thereon for supporting the annular pressure members; and means for forcing each pressure member axially inwardly towards the corresponding flange to squeeze the corresponding end of the envelope against the outer surface of the corresponding flange so as to provide a securing means for the envelope.
Claim 2
Dependent Claim
168 words
Apparatus for holding and sealing an envelope about a tire casing and tread strip assembly during a cold vulcanization operation, which includes: a rim member for supporting a tire casing said rim member having outwardly extending radial flanges on the outer peripheral surface thereof at opposite ends thereof for receiving the ends of the envelope adjacent to the respective outer surfaces of the flanges; an annular pressure member mounted on each end of the rim member adjacent to the outer surface of a corresponding one of the flanges with the ends of the envelope being received between the pressure members and the flanges; axially extending guide means formed on the rim member at the opposite ends thereof and at spaced angular positions thereon for supporting the annular pressure members; and means for forcing each pressure member axially inwardly towards the corresponding flange to squeeze the corresponding end of the envelope against the outer surface of the corresponding flange so as to provide a securing means for the envelope.
Claim 3
Dependent Claim
40 words
The apparatus defined in claim 1, in which the annular pressure members each includes inwardly extending radial ears, and in which said forcing means includes bolt means mounted on the rim for removably engaging the ears of the pressure members.
Claim 4
Dependent Claim
39 words
The apparatus defined in claim 2, in which the bolt means comprises a plurality of bolts hinged to the rim member, and a corresponding plurality of wing nuts respectively threaded to the bolts and engaging the respective pressure members.
References Cited (Backward Citations)
FR635944A
Cited
GB555727A
Cited
US3236709A
Cited
US3883382A
Cited
US3802978A
Cited
US3779833A
Cited
US3886028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |