US3578766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable pressure embossing machine
Assignee: Societe Nouvelle Spidem
•
Filing: 1967-04-04
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Granted: 1971-05-18
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Expires: 1987-04-04
Abstract
Abstract An embossing machine having means to vary the pressure of the cooperating embossing rolls employing hydraulic power cylinders to provide the substantially constant main force pressing the embossing cylinders together. Control hydraulic jacks are placed operatively between the cylinders to press them apart with a predetermined selected pressure to thereby selectively vary the resultant engaging pressure of the cylinders. Preferably, the jacks and power cylinders receive their hydraulic fluid from the same supply and the jacks are provided with motor reducer control units that may be coupled together for simultaneous adjustment of the jacks on each axial end of the cylinders or uncoupled for separate adjustment. Also, the jacks are retractable along with the upper cylinder supporting structure so that the cylinders may be easily removed and replaced.
Inventors
- 👤 Lucien Diolot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:31
CPC Classifications
B; B44; B44B; B44B5/00; B44B5/0047; B44B3/00; B44B2700/00; B44B2700/02; Y; Y10; Y10S; Y10S425/00; Y10S425/235
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
109 words
An embossing machine, comprising: two cooperating embossing cylinders each supported by a bearing block at each opposite axial end; main power means adapted to provide a substantially constant source pressure for forcing said cylinders into embossing engagement preloading hydraulic jack means at each opposite axial end of said embossing cylinders arranged between said bearing blocks and adapted to control the effective embossing pressure between said cylinders by providing a variable control force opposing said source pressure; means for selectively controlling the hydraulic pressure of said hydraulic jacks comprising a separate motor-gear reduction drive unit and driven ram-type piston for the jacks on each opposite axial end of said cylinders.
Claim 2
Dependent Claim
109 words
An embossing machine, comprising: two cooperating embossing cylinders each supported by a bearing block at each opposite axial end; main power means adapted to provide a substantially constant source pressure for forcing said cylinders into embossing engagement preloading hydraulic jack means at each opposite axial end of said embossing cylinders arranged between said bearing blocks and adapted to control the effective embossing pressure between said cylinders by providing a variable control force opposing said source pressure; means for selectively controlling the hydraulic pressure of said hydraulic jacks comprising a separate motor-gear reduction drive unit and driven ram-type piston for the jacks on each opposite axial end of said cylinders.
Claim 3
Dependent Claim
33 words
The machine of claim 1, wherein each of said motor-gear reduction units has a drive shaft axially aligned with each other, and including a selectively disengageable clutch for drivingly connecting said shafts together.
Claim 4
Dependent Claim
60 words
The embossing machine according to claim 1, including upper transverse frame members for normally retaining said bearing blocks against movement and being removable to allow upward removal of the embossing cylinders and their associated bearing blocks; and means for retracting said jacks from between said bearing blocks to allow ready removal of said embossing cylinders and their associated bearing blocks.
Claim 5
Dependent Claim
22 words
The machine of claim 3, wherein said retracting means mounts each of said jacks for horizontal pivotal movement about a vertical axis.
Claim 6
Dependent Claim
25 words
The machine of claim 4, including a single hydraulic supply means for supplying hydraulic fluid to said power means, said ram-type pistons and said jacks.
Claim 7
Dependent Claim
33 words
The machine of claim 5 wHerein each of said motor-gear reduction units has a drive shaft axially aligned with each other, and including a selectively disengageable clutch for drivingly connecting said shafts together.
Claim 8
Dependent Claim
33 words
The machine of claim 4, wherein each of said motor-gear reduction units has a drive shaft axially aligned with each other, and including a selectively disengageable clutch for drivingly connecting said shafts together.
Claim 9
Dependent Claim
25 words
The machine of claim 1, including a single hydraulic supply means for supplying hydraulic fluid to said power means, said ram-type pistons and said jacks.
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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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |