Patent US2315970A successfully refreshed from Google Patents.
Patent US3659976A successfully refreshed from Google Patents.
US3659976A
Expired / Lapsed
US
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Apparatus for molding and vulcanization of annular rubber articles
Assignee: Individual
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Filing: 1970-08-21
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Granted: 1972-05-02
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Expires: 1990-08-21
Abstract
Abstract An apparatus for molding and vulcanization of annular rubber articles comprising a drum adapted to receive and support thereabout the articles to be treated and a mechanism for external pressing of the articles received about the drum. The mechanism for external pressing of the articles includes individual selectively heatable segments arranged concentrically about the drum and associated with drive means for displacing these segments radially of the apparatus, this drive means including an annular frame pivotally connected through pivoted arms with the segments of the mechanism for external pressing of the articles, the frame being associated with power means for effecting axial reciprocation of the frame along guiding columns.
Inventors
- 👤 Arsenty Vasilievich Yavorsky
- 👤 Grigory Lvovich Farber
- 👤 Grigory Andreevich Gavrilenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:22
CPC Classifications
B; B29; B29D; B29D29/00; B29D29/08; B29D29/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
An apparatus for molding and vulcanization of annular rubber articles, comprising: a drum structure adapted to receive thereabout articles to be treated; a mechanism for external pressing of said articles received about said drum structure; a plurality of individual selectively heatable segments of said mechanism for external pressing of said articles, said segments being arranged concentrically in respect of said drum structure; drive means for effecting radial displacement of said segments of said mechanism for external pressing of said articles, said drive means including an annular frame; a plurality of arms pivotally connecting said annular frame with said segments of said mechanism for external pressing of said articles, said drive means further including power means associated with said annular frame for effecting axial motion of said annular frame in operation of said apparatus; a plurality of guiding columns adapted to guide said axial motion of said annular frame in operation of said apparatus.
Claim 2
Independent Claim
153 words
An apparatus for molding and vulcanization of annular rubber articles, comprising: a drum structure adapted to receive thereabout articles to be treated; a mechanism for external pressing of said articles received about said drum structure; a plurality of individual selectively heatable segments of said mechanism for external pressing of said articles, said segments being arranged concentrically in respect of said drum structure; drive means for effecting radial displacement of said segments of said mechanism for external pressing of said articles, said drive means including an annular frame; a plurality of arms pivotally connecting said annular frame with said segments of said mechanism for external pressing of said articles, said drive means further including power means associated with said annular frame for effecting axial motion of said annular frame in operation of said apparatus; a plurality of guiding columns adapted to guide said axial motion of said annular frame in operation of said apparatus.
References Cited (Backward Citations)
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US2602982A
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US2730783A
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US2709277A
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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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |