US3602948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanization press
Assignee: Compagnie Generale des Etablissements Michelin SCA
•
Filing: 1969-03-13
•
Granted: 1971-09-07
•
Expires: 1989-03-13
Abstract
Abstract A vulcanization press has a fixed frame, a lower, horizontally movable mold plate secured to the frame, and an upper, vertically movable mold plate that can be closed with respect to the lower mold plate. The plates are clamped together in the closed position by a wedge cooperating with inclined thrust blocks, at least one thrust block being connected to each plate.
Inventors
- 👤 Daniel Lejeune
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:21
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/0601; B29D30/0662; Y; Y10; Y10S; Y10S425/00; Y10S425/221
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
307 words
A vulcanization press comprising a fixed frame, a first mold plate secured to said frame, a second mold plate movably mounted with respect to said first plate, and clamping means for pressing said plates together, said clamping means comprising fixed thrust block means mounted in stationary relation to said frame, movable thrust block means connected to said second mold plate and movable with respect to the fixed thrust block means, wedge means mounted for engaging movement whereby said thrust block means are engaged by said wedge means and relatively moved to clamp said mold plates tightly together and for disengaging movement whereby said wedge means is disengaged from said thrust block means to permit opening of said mold plates, and motive means for actuating said wedge means, said movable thrust block means comprising two movable thrust blocks and said clamping means further comprising a mold plate arm secured to said second mold plate, teeth formed on opposite sides of said arm, a pair of thrust block arms, one secured to each of said movable thrust blocks, teeth on each of said thrust block arms, said mold plate arm teeth extending between said thrust block arm teeth for engagement thereby when said wedge means is actuated to clamp said mold plates together said thrust block arms being mounted for pivotal and sliding movement, further comprising biasing means connected to said thrust block arms for pivoting said thrust block arm teeth out of engagement with said mold plate arm teeth when said wedge means is disengaged from said thrust block means, said wedge means when actuated to clamp said mold plates together overcoming said biasing means and pivoting said thrust block arm teeth into engagement With said mold plate arm teeth and further translating said thrust block arms and thrust blocks to effect said clamping of said mold plates.
Claim 2
Dependent Claim
307 words
A vulcanization press comprising a fixed frame, a first mold plate secured to said frame, a second mold plate movably mounted with respect to said first plate, and clamping means for pressing said plates together, said clamping means comprising fixed thrust block means mounted in stationary relation to said frame, movable thrust block means connected to said second mold plate and movable with respect to the fixed thrust block means, wedge means mounted for engaging movement whereby said thrust block means are engaged by said wedge means and relatively moved to clamp said mold plates tightly together and for disengaging movement whereby said wedge means is disengaged from said thrust block means to permit opening of said mold plates, and motive means for actuating said wedge means, said movable thrust block means comprising two movable thrust blocks and said clamping means further comprising a mold plate arm secured to said second mold plate, teeth formed on opposite sides of said arm, a pair of thrust block arms, one secured to each of said movable thrust blocks, teeth on each of said thrust block arms, said mold plate arm teeth extending between said thrust block arm teeth for engagement thereby when said wedge means is actuated to clamp said mold plates together said thrust block arms being mounted for pivotal and sliding movement, further comprising biasing means connected to said thrust block arms for pivoting said thrust block arm teeth out of engagement with said mold plate arm teeth when said wedge means is disengaged from said thrust block means, said wedge means when actuated to clamp said mold plates together overcoming said biasing means and pivoting said thrust block arm teeth into engagement With said mold plate arm teeth and further translating said thrust block arms and thrust blocks to effect said clamping of said mold plates.
Claim 3
Dependent Claim
28 words
A press according to claim 1 wherein said mold plate arm teeth are engageable with said thrust block arm teeth at different locations of said mold plate arm.
Claim 4
Dependent Claim
61 words
A press according to claim 1 wherein a plurality of said mold plate arm teeth on each side of said mold plate arm are respectively engageable with a plurality of the teeth on each of said thrust block arm teeth, whereby the engagement of said mold plate arm teeth and said thrust block arm teeth is distributed over a greater area.
References Cited (Backward Citations)
US1740065A
Cited
US1801605A
Cited
US1778803A
Cited
US1800849A
Cited
US2115590A
Cited
US2319479A
Cited
US2812543A
Cited
US2987770A
Cited
US3154814A
Cited
US3310842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |