US3793118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacturing conveyor belts with steel cable inserts
Assignee: Clouth Gummiwerke AG
•
Filing: 1972-01-28
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Granted: 1974-02-19
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Expires: 1992-01-28
Abstract
Abstract An apparatus for making conveyor belts of rubber with inserts of longitudinally extending steel cables, in which first movable clamping means for selectively firmly grasping sections of the cables to be incorporated in the conveyor belt to be made are arranged between winding-off means for the steel cables and first fixed clamping means, while second movable clamping means are arranged between second fixed clamping means and winding up means for the finished belt, tensioning means being arranged between the first movable clamping means and the first fixed clamping means. Each of all clamping means is adapted selectively firmly to grasp and release the cable means.
Inventors
- 👤 M Gilles
- 👤 A Thiel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:37
CPC Classifications
B; B29; B29D; B29D29/00; B29D29/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
201 words
An apparatus for making conveyor belts of rubber with longitudinally extending steel cables continuously uniformly tensioned therein, which includes in combination: first and second stand means spaced from each other for respectively delivering steel cables and winding up conveyor belts with said steel cables incorporated therein, first and second movable clamping means connected to each other for synchronous movement with each other and arranged between said first and second stand means, first and second fixed clamping means arranged in spaced relationship to and between said first and second movable clamping means and also being spaced from each other, tensioning means interposed between said first movable clamping means and said first fixed clamping means for individually tensioning cables passing from said first movable clamping means to said first fixed clamping means, rubber applying means interposed between said first and second fixed clamping means for applying rubber material to and around cables passing from said first fixed clamping means to said second fixed clamping means, a press interposed between said first and second fixed clamping means for vulcanizing the thus obtained rubber structure around the respective cables, and means associated with said second stand means for winding up the thus vulcanized belt structure.
Claim 2
Independent Claim
201 words
An apparatus for making conveyor belts of rubber with longitudinally extending steel cables continuously uniformly tensioned therein, which includes in combination: first and second stand means spaced from each other for respectively delivering steel cables and winding up conveyor belts with said steel cables incorporated therein, first and second movable clamping means connected to each other for synchronous movement with each other and arranged between said first and second stand means, first and second fixed clamping means arranged in spaced relationship to and between said first and second movable clamping means and also being spaced from each other, tensioning means interposed between said first movable clamping means and said first fixed clamping means for individually tensioning cables passing from said first movable clamping means to said first fixed clamping means, rubber applying means interposed between said first and second fixed clamping means for applying rubber material to and around cables passing from said first fixed clamping means to said second fixed clamping means, a press interposed between said first and second fixed clamping means for vulcanizing the thus obtained rubber structure around the respective cables, and means associated with said second stand means for winding up the thus vulcanized belt structure.
Claim 3
Dependent Claim
28 words
An apparatus in combination according to claim 1, in which said tensioning means is movably connected to said first and second movable clamping means to move together therewith.
Claim 4
Dependent Claim
20 words
An apparatus in combination according to claim 1, which includes conveying means connecting said first and second movable clamping means.
Claim 5
Dependent Claim
18 words
An apparatus in combination according to claim 3, which includes length compensating means interposed in said conveying means.
Claim 6
Dependent Claim
19 words
An apparatus in combination according to claim 4, in which said length compensating means includes fluid operable intermediate means.
Claim 7
Dependent Claim
17 words
An apparatus in combination according to claim 4, in which said length compensating means includes resilient means.
Claim 8
Dependent Claim
60 words
An apparatus in combination according to claim 2, in which said conveying means includes fluid operable cylinder piston means, conduit means interconnecting said fluid operable cylinder piston means, valve means associated with said conduit means, and pump and motor means connectable to said valve means for maintaining said cylinder piston means through said valve means at a substantially uniform pressure.
Claim 9
Dependent Claim
68 words
An apparatus in combination according to claim 7, in which said cylinder piston means is double-acting, and in which said conduit means interconnect only one end of said cylinder piston means, additional conduit means being provided for interconnecting the other ends of said cylinder piston means, control valve means being associated with saiD additional conduit means, and additional pump and motor means communicating with said control valve means.
References Cited (Backward Citations)
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US3345229A
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US3607561A
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US3684606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |