US3879813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clamp
Assignee: Mediplast AB
•
Filing: 1974-01-04
•
Granted: 1975-04-29
•
Expires: 1994-01-04
Abstract
Abstract A clamp for gripping fabric which has jaws including sharp teeth arranged in longitudinal rows with gaps between the teeth, the teeth in one row being offset with respect to the teeth in an adjacent row and the teeth in one jaw meshing into the gaps in the other jaw.
Inventors
- 👤 David William Shadwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:09
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/28; A61B17/2812; A61B17/282; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44034
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
142 words
A clamp for gripping fabric including an upper and a lower jaw, each comprising at least two longitudinal rows of teeth with gaps between the teeth in any one row, said teeth in any one row being in transverse register with said gaps in an adjacent row and each tooth having an apex for penetrating fabric, and in which the teeth in the upper jaw mesh into the gaps between the teeth in the lower jaw and vice versa, each tooth being in the form of a triangular pyramid with one side of the base triangle parallel to the longitudinal axis of the jaw in which it is located and the apex situated vertically above that side to form a vertical face, adjacent rows of teeth being arranged with the vertical faces of the teeth in each row facing in opposite directions.
Claim 2
Dependent Claim
142 words
A clamp for gripping fabric including an upper and a lower jaw, each comprising at least two longitudinal rows of teeth with gaps between the teeth in any one row, said teeth in any one row being in transverse register with said gaps in an adjacent row and each tooth having an apex for penetrating fabric, and in which the teeth in the upper jaw mesh into the gaps between the teeth in the lower jaw and vice versa, each tooth being in the form of a triangular pyramid with one side of the base triangle parallel to the longitudinal axis of the jaw in which it is located and the apex situated vertically above that side to form a vertical face, adjacent rows of teeth being arranged with the vertical faces of the teeth in each row facing in opposite directions.
Claim 3
Dependent Claim
19 words
A clamp according to claim 1 wherein the longitudinal rows of teeth are spaced apart by a small gap.
Claim 4
Dependent Claim
16 words
A clamp according to claim 1 wherein each jaw has only two longitudinal rows of teeth.
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) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |