US5062780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanization apparatus
Assignee: Bando Chemical Industries Ltd
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Filing: 1990-10-04
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Granted: 1991-11-05
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Expires: 2010-10-04
Abstract
Abstract Vulcanization apparatus to vulcanize, with the heat and pressure of a fluid, a molding of rubber belt material (before being cut crosswise into the final products) while the molding is being held intact over the external circumference of a hollow cylindrical mold. A steaming jacket is provided into which the mold with the molding sticking intact thereto is inserted. The steaming jacket comprises a rubber sleeve on the interior of a cylindrical casing and secured and sealed at upper and lower axial ends of the rubber sleeve against the casing. The sleeve is swelled inwardly when heated high pressure fluid is passed through an internal space between the casing and the sleeve. The vulcanization apparatus is provided with steam supply and discharge pipes for the internal space of the jacket and steam supply and discharge pipes for the mold inserted into the jacket.
Inventors
- 👤 Toshio Nakagaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:33
CPC Classifications
B; B29; B29C; B29C35/00; B29C35/02; B29C35/04; B29C33/00; B29C33/02; B29C33/04; B29C33/048; B29C43/00; B29C43/02; B29C43/10; B29C43/102; B29C35/049; B29K; B29K2021/00; B29L; B29L2023/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
183 words
A vulcanization apparatus for vulcanizing a cylindrical rubber molding utilizing a heated fluid under pressure, comprising a cylindrical mold having a hollow interior, said mold being adapted to receive said molding over the external circumference thereof; a jacket comprising a tubular rubber sleeve mounted inside a cylindrical casing, both axial ends of said sleeve being secured and sealed to said casing, said jacket being dimensioned such that a molding and a mold can be inserted into said sleeve, an internal space between said casing and said sleeve being formed which when pressurized causes said sleeve to be swelled inwardly and the molding to be pressed by the inner circumference of said sleeve; first piping connected to said jacket to pass said fluid through said internal space; second piping connected to said mold to pass said fluid through said hollow interior, means for moving said jacket and said mold between a preparation position and a vulcanization position, and means for connecting said fluid to said jacket and to said mold when in said vulcanization position and disconnecting said fluid when in said preparation position.
Claim 2
Dependent Claim
183 words
A vulcanization apparatus for vulcanizing a cylindrical rubber molding utilizing a heated fluid under pressure, comprising a cylindrical mold having a hollow interior, said mold being adapted to receive said molding over the external circumference thereof; a jacket comprising a tubular rubber sleeve mounted inside a cylindrical casing, both axial ends of said sleeve being secured and sealed to said casing, said jacket being dimensioned such that a molding and a mold can be inserted into said sleeve, an internal space between said casing and said sleeve being formed which when pressurized causes said sleeve to be swelled inwardly and the molding to be pressed by the inner circumference of said sleeve; first piping connected to said jacket to pass said fluid through said internal space; second piping connected to said mold to pass said fluid through said hollow interior, means for moving said jacket and said mold between a preparation position and a vulcanization position, and means for connecting said fluid to said jacket and to said mold when in said vulcanization position and disconnecting said fluid when in said preparation position.
Claim 3
Dependent Claim
39 words
Apparatus as set forth in claim 1, wherein said first piping includes a supply pipe and a drain pipe connected to said jacket, and said second piping includes a supply pipe and a drain pipe connected to said mold.
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) | 1994-11-04 | 1995-05-06 | 1995-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-04 | 1999-05-06 | 1999-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-04 | 2003-05-06 | 2003-11-05 | $7700.00 | Window Closed / Lapsed |