Patent US3617413A successfully refreshed from Google Patents.
US3617413A
Expired / Lapsed
US
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Production of simulated grasslike products
Assignee: Astroturf Industries Inc
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Filing: 1970-06-26
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Granted: 1971-11-02
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Expires: 1990-06-26
Abstract
Abstract Random discontinuous slits cut in monofilament ribbons before weaving, knitting, tufting, or otherwise binding provide in a finished synthetic turf product, random variable blade widths with physical characteristics and appearance similar to that of natural grass.
Inventors
- 👤 Donald L Elbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:04
CPC Classifications
B; B44; B44F; B44F9/00; E; E01; E01C; E01C13/00; E01C13/08; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
79 words
A process for the production of a simulated grasslike woven product comprising the steps of: a. extruding a thermoplastic monofilament ribbon having a substantially rectangular cross section, b. slitting said monofilament ribbon in a discontinuous and random fashion longitudinally through its narrowest dimension, c. weaving said ribbon into successive rows extending vertically from a warp and fill backing, whereby the free ends of said ribbons are characterized by random widths, and d. securing said backing with an adhesive material.
Claim 2
Dependent Claim
96 words
A process for producing a simulated grasslike tufted product comprising the steps of: a. extruding a thermoplastic composition into a monofilament ribbon having a substantially rectangular cross section, b. slitting said ribbon in a discontinuous and random fashion longitudinally through its narrowest dimension, c. tufting said ribbon into a backing to form successive rows of loops, d. cutting said loops to provide a cut pile face whereby the free ends of said ribbons are characterized by random widths, and e. securing said backing by applying an adhesive material on the side opposite the cut pile face.
Claim 3
Dependent Claim
84 words
A process for producing a simulated grasslike product comprising the steps of: a. extruding a thermoplAstic material into a monofilament ribbon having a substantially rectangular cross section, b. slitting said monofilament ribbon in a discontinuous and random fashion longitudinally through its narrowest dimension, c. knitting said ribbon into pile construction extending from a warp and lay-in backing, d. securing said backing by an adhesive material, and e. cutting said pile whereby the resulting free ends of said monofilament ribbons are characterized by random widths.
References Cited (Backward Citations)
US3332828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |