US3863858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tensioning apparatus
Assignee: Individual
•
Filing: 1973-11-09
•
Granted: 1975-02-04
•
Expires: 1993-11-09
Abstract
Abstract Apparatus for applying uniform tension to a plurality of steel strips being wound into coils on a coiler is provided. The apparatus includes a pair of drag members between which the strips pass in parallel relationship. One of the drag members is in a fixed position relative to the other and the other is movable toward and away from the fixed one. Two elongate, fluidfilled members are behind the movable member and extend the length thereof. Air is supplied under pressure to the elongate members to urge the movable drag member toward the fixed one in order to place constant drag or tension on all of the strips passing therebetween. Both of the drag members can be held by supporting means which are moved vertically in a frame to move the drag members up as the strips are wound on the coils and the coils increase in diameter. This keeps the strips in constant relationship relative to the coil diameter and enables the tensioning apparatus to be placed closer to the coils than heretofore possible. The drag members can also be mounted on pivoted arms adjacent the mandrel of the coiler and move with the arms as the coil diameter increases.
Inventors
- 👤 Ford B Cauffiel
- 👤 Herbert C Trautman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:34
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/04; B65H23/06; B65H23/10; B21; B21C; B21C47/00; B21C47/006; B65H2301/00; B65H2301/40; B65H2301/41; B65H2301/414; B65H2301/4148
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
117 words
A tensioning device for maintaining substantially equal tension on a plurality of elongate, flexible members, said tensioning device comprising a first drag member, means for holding said drag member in a predetermined position, a second drag member, means for holding said second drag member facing said first drag member, said flexible, elongate members being passed in a common direction between said drag members, means for establishing uniform pressure over a substantial portion of the length of said second drag member to urge said second drag member toward said first drag member, supporting means for supporting both of said drag members, and at least two jackscrews engageable with said supporting means for raising and lowering said supporting means.
Claim 2
Dependent Claim
117 words
A tensioning device for maintaining substantially equal tension on a plurality of elongate, flexible members, said tensioning device comprising a first drag member, means for holding said drag member in a predetermined position, a second drag member, means for holding said second drag member facing said first drag member, said flexible, elongate members being passed in a common direction between said drag members, means for establishing uniform pressure over a substantial portion of the length of said second drag member to urge said second drag member toward said first drag member, supporting means for supporting both of said drag members, and at least two jackscrews engageable with said supporting means for raising and lowering said supporting means.
Claim 3
Dependent Claim
16 words
A tensioning device according to claim 1 characterized by said pressure means comprises elongate resilient means.
Claim 4
Dependent Claim
23 words
A tensioning device according to claim 1 characterized by said pressure means being tubular, and means for supplying fluid to said tubular means.
Claim 5
Dependent Claim
14 words
A tensioning device according to claim 3 characterized by said fluid being a gas.
Claim 6
Dependent Claim
31 words
A tensionning device according to claim 1 characterized by means associated with said second drag member for limiting the movement thereof to directions toward and away from said first drAg member.
Claim 7
Dependent Claim
26 words
A tensioning device according to claim 1 characterized by said raising and lowering means comprises guide means for directing said supporting means along generally vertical paths.
Claim 8
Dependent Claim
28 words
A tensioning device according to claim 1 characterized by drive means engageable with each of said screws, and means for driving said drive means to turn said screws.
Claim 9
Dependent Claim
131 words
A tensioning device for maintaining tension on an elongate, flexible member, said device comprising a first drag member, means for holding and backing up said first drag member in a fixed position, a second drag member, means for holding and backing up said second drag member in a fixed position facing said first drag member, said flexible member being passed between said drag members, means for urging one of said drag members toward the other, support means for supporting both of said holding means, rotatable guide means for guiding the flexible member between said drag members, brackets supported by said support means and rotatably supporting said guide means, and means for moving said support means to move both of said drag members and said guide means equally in a given direction.
Claim 10
Dependent Claim
131 words
A tensioning device for maintaining tension on an elongate, flexible member, said device comprising a first drag member, means for holding and backing up said first drag member in a fixed position, a second drag member, means for holding and backing up said second drag member in a fixed position facing said first drag member, said flexible member being passed between said drag members, means for urging one of said drag members toward the other, support means for supporting both of said holding means, rotatable guide means for guiding the flexible member between said drag members, brackets supported by said support means and rotatably supporting said guide means, and means for moving said support means to move both of said drag members and said guide means equally in a given direction.
Claim 11
Dependent Claim
33 words
A tensioning device according to claim 8 characterized by adjustable means between said rotatable guide means and said brackets for adjusting said guide means relative to said supporting means and said drag members.
Claim 12
Dependent Claim
27 words
A tensioning device according to claim 8 wherein said moving means comprises at least two jackscrews engaging said supporting means for raising and lowering said supporting means.
Claim 13
Dependent Claim
28 words
A tensioning device according to claim 10 characterized by drive means engageable with each of said jackscrews, and means for driving said drive means to turn said jackscrews.
Claim 14
Dependent Claim
26 words
A tensioning device according to claim 8 characterized by said urging means acts substantially uniformly on said one drag member over substantially the entire length thereof.
Claim 15
Dependent Claim
29 words
A tensioning device according to claim 8 characterized by said urging means comprises a flexible, hollow member, and means for supplying fluid under pressure to said flexible, hollow member.
Claim 16
Dependent Claim
13 words
A tensioning device according to claim 13 characterized by said fluid being air.
Claim 17
Dependent Claim
66 words
In combination, a coiler including a mandrel, arm means extending over said mandrel, means pivotally supporting said arm means near said mandrel, a tensioning device carried by said arm means to receive elongate, flexible material to be coiled on said mandrel, and means associated with said arm means for moving said tensioning device away from said mandrel as a coil on said mandrel increases in diameter.
Claim 18
Dependent Claim
66 words
In combination, a coiler including a mandrel, arm means extending over said mandrel, means pivotally supporting said arm means near said mandrel, a tensioning device carried by said arm means to receive elongate, flexible material to be coiled on said mandrel, and means associated with said arm means for moving said tensioning device away from said mandrel as a coil on said mandrel increases in diameter.
Claim 19
Dependent Claim
28 words
The combination according to claim 15 characterized by said moving means comprises roll means carried by said arm means and positioned to engage the coil on the mandrel.
Claim 20
Dependent Claim
48 words
The combination according to claim 15 characterized by said ellongate, flexible means comprises a plurality of strips and said tensioning device includes spacing means for spacing apart the adjacent strips to be wound on the mandrel, said spacing means being carried by said tensioning device and movable therewith.
Claim 21
Dependent Claim
22 words
The combination according to claim 17 characterized by said spacing means being on the side of said tensioning device opposite the mandrel.
Claim 22
Dependent Claim
25 words
The combination according to claim 15 characterized by said tensioning device comprises a pair of drag members between which the material to be coiled passes.
Claim 23
Dependent Claim
20 words
The combination according to claim 19 characterized by means for yieldably urging one of said drag members toward the other.
Claim 24
Dependent Claim
26 words
The combination according to claim 15 characterized by counterbalancing means connected to said arm means for at least partly offsetting the weight of the tensioning device.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |