US3779441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabric tensioning apparatus
Assignee: Individual
•
Filing: 1972-03-16
•
Granted: 1973-12-18
•
Expires: 1992-03-16
Abstract
Abstract A fabric tensioning apparatus particularly suitable for synthetic fabrics, such as nylon and the like, having a first assembly of splined profile rollers for receiving lengths of crimped synthetic fabric and stretching this fabric under tension between a tripod assembly of rollers in a continuously moving manner so that the fabric can be fed directly to a cutting machine and cut to uniform lengths for use in carpets and the like.
Inventors
- 👤 H Policella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:55
CPC Classifications
D; D01; D01H; D01H5/00; D01H5/18; D01H5/22
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
184 words
A tensioning apparatus particularly suitable for tensioning fabrics and the like comprising in combination: a base; feed roller means mounted on one end of said base and comprising a first elongated splined roller and a second elongated splined roller each disposed so as to mesh along a parallel axis and including biasing means for urging the pair of rollers together in order to grip at least one incoming fabric sliver therebetween; tripod roller means spaced apart from said feed roller means and positioned on the other end of said base for gripping at least one fabric sliver, said tripod roller means including a third and a fourth idler profile roller mounted parallel and adjacent to each other, and a fifth elongated profile roller engaging and mounted between the third and fourth profile rollers, the third, fouRth and fifth rollers each including a gear mounted at a common end, the gear on the fifth roller engaging each gear of the third and fourth rollers; and means for driving said tripod roller means faster than said feed roller means to stretch the fabric sliver suspended therebetween.
Claim 2
Dependent Claim
184 words
A tensioning apparatus particularly suitable for tensioning fabrics and the like comprising in combination: a base; feed roller means mounted on one end of said base and comprising a first elongated splined roller and a second elongated splined roller each disposed so as to mesh along a parallel axis and including biasing means for urging the pair of rollers together in order to grip at least one incoming fabric sliver therebetween; tripod roller means spaced apart from said feed roller means and positioned on the other end of said base for gripping at least one fabric sliver, said tripod roller means including a third and a fourth idler profile roller mounted parallel and adjacent to each other, and a fifth elongated profile roller engaging and mounted between the third and fourth profile rollers, the third, fouRth and fifth rollers each including a gear mounted at a common end, the gear on the fifth roller engaging each gear of the third and fourth rollers; and means for driving said tripod roller means faster than said feed roller means to stretch the fabric sliver suspended therebetween.
Claim 3
Dependent Claim
41 words
The tensioning apparatus as recited in claim 1 wherein said means for urging comprises a spring disposed at each end of the first roller and reacting against said base for urging the axis of the first roller against the second roller.
Claim 4
Dependent Claim
38 words
The tensioning apparatus as recited in claim 2 wherein said driving means comprises a first coupling joining the fifth roller and the first roller and a second coupling joining an external rotational power source to the fifth roller.
Claim 5
Dependent Claim
43 words
The tensioning apparatus as recited in claim 2 wherein said tripod roller means additionally comprises spreader means coupled to each end of the third and fourth rollers for separating the axes of the third and fourth rollers with respect to the fifth roller.
Claim 6
Dependent Claim
119 words
The tensioning apparatus as recited in claim 4 wherein said spreader means comprises a first pair of vertical levers pivotably coupled to said base and pivotably receiving the ends of the third roller, a second pair of vertical levers pivotably coupled to said base and pivotably receiving the ends of the fourth roller, means for urging said first and second pair of vertical levers together to enable the third and fourth rollers to engage the fifth roller, and at least one release lever having a cam surface disposed between adjacently disposed levers so that rotation of said release lever will cause said cam to urge against said vertical levers and spread the axes of the third and fourth rollers.
Claim 7
Dependent Claim
31 words
The tensioning apparatus as recited in claim 1 wherein said base additionally comprises a plurality of telescoping legs mounted on said base to permit said base to be adjusted in height.
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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |