US3818790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carpet tile cutter
Assignee: Shaw Industries Group Inc
•
Filing: 1972-11-29
•
Granted: 1974-06-25
•
Expires: 1992-11-29
Abstract
Abstract An apparatus is provided for making carpet tiles. Large pieces of carpeting material are fed through a series of carpet cutters to form one-square-foot carpet tiles. A large piece of carpeting or a carpet slug is automatically fed onto a conveyor structure and passed by several carpet cutters which cut the carpet slug into a plurality of one-square-foot carpet tiles. Carpet is conveyed on a needle bed support structure with the carpet face against the needles of the needle bed so that the carpet cutters will cut on the back surface of the carpet.
Inventors
- 👤 C Culp
- 👤 J Otthofer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:16
CPC Classifications
D; D06; D06H; D06H7/00; Y; Y10; Y10T; Y10T83/00; Y10T83/647; Y10T83/6476; Y10T83/6489; Y10T83/6491; Y10T83/6571; Y10T83/6584; Y10T83/6635; Y10T83/889
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
215 words
An apparatus for forming carpet tiles wherein a feed structure automatically positions a carpet slug of a multisquare-foot dimension upon a needle board conveyor structure, said automatic feeding structure is an inclined chute structure which moves from a raised position to a lowered position to permit the carpet slug to slide off the chute structure onto the needle board conveyor structure, said needle board conveyor structure being a base structure with a plurality of upright needles positioned thereon, said needle board conveyor structure moving the carpet slug below a plurality of cutting means which cut the carpet slug on the needle board conveyor structure into a plurality of strips, the cutting edge of the cutting means is so positioned relative to the plane of the points of the needles on the needle board conveyor structure that the cutting means cuts below the plane of the needles of the needle board conveyor structure, conveying the same needle board conveyor structure in the direction at an angle of 90* from its first direction of travel under a second set of cutting means which now cut the carpet slug with a series of cut lines at a 90* angle relative to the original cut lines on the carpet slug whereby there is formed a plurality of carpet tiles.
Claim 2
Independent Claim
215 words
An apparatus for forming carpet tiles wherein a feed structure automatically positions a carpet slug of a multisquare-foot dimension upon a needle board conveyor structure, said automatic feeding structure is an inclined chute structure which moves from a raised position to a lowered position to permit the carpet slug to slide off the chute structure onto the needle board conveyor structure, said needle board conveyor structure being a base structure with a plurality of upright needles positioned thereon, said needle board conveyor structure moving the carpet slug below a plurality of cutting means which cut the carpet slug on the needle board conveyor structure into a plurality of strips, the cutting edge of the cutting means is so positioned relative to the plane of the points of the needles on the needle board conveyor structure that the cutting means cuts below the plane of the needles of the needle board conveyor structure, conveying the same needle board conveyor structure in the direction at an angle of 90* from its first direction of travel under a second set of cutting means which now cut the carpet slug with a series of cut lines at a 90* angle relative to the original cut lines on the carpet slug whereby there is formed a plurality of carpet tiles.
Claim 3
Dependent Claim
66 words
The apparatus of claim 1 wherein the chute structure is moved from its raised to its lower position by a mechanical means which is responsive to the movement of the needle board conveyor structure past a control means so that the chute means is lowered to its lower position only when the needle board conveyor structure is in its proper position to receive the carpet slug.
References Cited (Backward Citations)
CA583246A
Cited
US2161346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |