Patent US3833980A successfully refreshed from Google Patents.
US3833980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll for applying pressure
Assignee: VAN VLAANDEREN MACHINE CO INC US
•
Filing: 1973-04-27
•
Granted: 1974-09-10
•
Expires: 1993-04-27
Abstract
Abstract A roll for applying pressure comprising two shafts, a stationary inner structure mounted between the shafts, a slot extending substantially throughout the length of the inner structure, a rotatable outer cylinder surrounding the inner structure, means mounted on each shaft to rotatably support the outer cylinder, an inner roller disposed within the slot defined in the inner structure, said slot being substantially parallel to the axis of rotation of the outer cylinder, means for sealing the inner roller in the slot to form a chamber adapted to contain a pressurizing fluid, a fluid passage means for supplying fluid through one of the shafts into the chamber, said chamber and inner structure being adapted by the force of the fluid to urge the inner roller against an inner surface of the rotatable outer cylinder, and means for applying a force to the roll whereby the outer cylinder is urged toward the opposing surface.
Inventors
- 👤 S Gaghan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:37
CPC Classifications
D; D06; D06B; D06B15/00; D06B15/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
156 words
A roll for applying pressure to an opposing surface comprising two shafts, a stationary inner structure mounted between the shafts, a slot extending substantially throughout the length of the inner structure, a rotatable outer cylinder surrounding the inner structure, means mounted on each shaft to rotatably support the outer cylinder, an inner roller disposed within the slot defined in the inner structure, said slot being substantially parallel to the axis of rotation of the outer cylinder, means for sealing the inner roller in the slot to form a chamber adapted to contain a pressurizing fluid, a fluid passage means for supplying fluid through one of the shafts into the chamber, said chamber and inner structure being adapted by the force of the fluid to urge the inner roller against an inner surface of the rotatable outer cylinder, and means for applying a force to the roll whereby the outer cylinder is urged toward the opposing surface.
Claim 2
Dependent Claim
156 words
A roll for applying pressure to an opposing surface comprising two shafts, a stationary inner structure mounted between the shafts, a slot extending substantially throughout the length of the inner structure, a rotatable outer cylinder surrounding the inner structure, means mounted on each shaft to rotatably support the outer cylinder, an inner roller disposed within the slot defined in the inner structure, said slot being substantially parallel to the axis of rotation of the outer cylinder, means for sealing the inner roller in the slot to form a chamber adapted to contain a pressurizing fluid, a fluid passage means for supplying fluid through one of the shafts into the chamber, said chamber and inner structure being adapted by the force of the fluid to urge the inner roller against an inner surface of the rotatable outer cylinder, and means for applying a force to the roll whereby the outer cylinder is urged toward the opposing surface.
Claim 3
Dependent Claim
14 words
The apparatus of claim 1 wherein the outer cylinder has an outer rubber coating.
Claim 4
Dependent Claim
51 words
The apparatus of claim 1 wherein the means for sealing the inner roller in the slot comprises two end blocks, longitudinally movable and stationary seals which are substantially parallel to the axis of rotation of the outer roller and which together with the end blocks and the slot form the chamber.
Claim 5
Dependent Claim
44 words
The apparatus of claim 1 wherein the means mounted on each shaft to rotatably support the outer cylinder comprises self-aligning bearings and an oil lubricating tube which is adapted to transmit the fluid from the inner surface of the outer cylinder to the bearings.
Claim 6
Dependent Claim
47 words
The apparatus of claim 1 wherein the means for applying a force to the roll comprises at least one rotatable beam and at least one dual-acting hydraulic cylinder, and means are provided to control the dual-acting hydraulic cylinder and the pressure of the fluid in the chamber.
Claim 7
Dependent Claim
13 words
The apparatus of claim 1 wherein the opposing surface comprises a stationary roll.
Claim 8
Dependent Claim
138 words
A roll for applying a pressure to an opposing stationary roll, the roll for applying pressure comprising two shafts, a stationary inner structure mounted between the shafts, a slot extending substantially throughout the length of the inner structure, a rotatable outer cylinder surrounding the inner structure, means mounted on each shaft to rotatably support the outer cylinder, means in the slot for applying pressure to the inner surface of the outer cylinder, a stationary means for supporting each shaft of the roll for applying pressure in a movablE manner, means for applying a force to the roll for applying pressure which independently controls the pressure on the inner surface of the outer cylinder from the slot and the force between the roll for applying pressure and the stationary roll so that the amount of deflection may be controlled.
Claim 9
Dependent Claim
138 words
A roll for applying a pressure to an opposing stationary roll, the roll for applying pressure comprising two shafts, a stationary inner structure mounted between the shafts, a slot extending substantially throughout the length of the inner structure, a rotatable outer cylinder surrounding the inner structure, means mounted on each shaft to rotatably support the outer cylinder, means in the slot for applying pressure to the inner surface of the outer cylinder, a stationary means for supporting each shaft of the roll for applying pressure in a movablE manner, means for applying a force to the roll for applying pressure which independently controls the pressure on the inner surface of the outer cylinder from the slot and the force between the roll for applying pressure and the stationary roll so that the amount of deflection may be controlled.
Claim 10
Dependent Claim
154 words
A roll for applying pressure to an opposing surface comprising two shafts, a stationary inner structure mounted between the shafts, a slot extending substantially throughout the length of the inner structure, a rotatable outer cylinder surrounding the inner structure, means mounted on each shaft to rotatably support the outer cylinder, an inner roller disposed within the slot defined in the inner structure, said slot and inner roller being substantially parallel to the axis of rotation of the outer cylinder, means for sealing the inner roller in the slot to form a chamber between the rotating surface of the inner roller and the surfaces of the slot, means for pressurizing the chamber with fluid, said means including a fluid supply passage extending through the inner structure and communicating with the chamber, whereby the inner roller can be urged against the inner surface of the rotatable outer cylinder to force the latter toward the opposing surface.
Claim 11
Dependent Claim
154 words
A roll for applying pressure to an opposing surface comprising two shafts, a stationary inner structure mounted between the shafts, a slot extending substantially throughout the length of the inner structure, a rotatable outer cylinder surrounding the inner structure, means mounted on each shaft to rotatably support the outer cylinder, an inner roller disposed within the slot defined in the inner structure, said slot and inner roller being substantially parallel to the axis of rotation of the outer cylinder, means for sealing the inner roller in the slot to form a chamber between the rotating surface of the inner roller and the surfaces of the slot, means for pressurizing the chamber with fluid, said means including a fluid supply passage extending through the inner structure and communicating with the chamber, whereby the inner roller can be urged against the inner surface of the rotatable outer cylinder to force the latter toward the opposing surface.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |