US3616154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonwoven openwork net structure of thermoplastic material
Assignee: TJ Smith and Nephew Ltd
•
Filing: 1969-03-17
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Granted: 1971-10-26
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Expires: 1989-03-17
Abstract
Abstract A nonwoven netlike openwork structure of thermoplastic material is provided, comprising a plurality of bosses arranged in a plurality of rows extending substantially uniformly throughout the structure, substantially all of which bosses are integrally joined to at least two other such bosses by bands of thermoplastic material, said bosses being of at least two different configurations, and the area of the structure between the bosses and the bands being substantially devoid of thermoplastic material. If desired the structure may also include portions in which all the bosses are of substantially the same configuration.
Inventors
- 👤 James Dow
- 👤 Albert George Patchell
- 👤 Ronald Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:19
CPC Classifications
B; B29; B29D; B29D28/00; B29C; B29C48/00; B29C48/03; B29C48/07; B29C48/08; B29C55/00; B29C55/02; B29C48/09; B29C48/11; B29C48/12; B29C48/13; B29L; B29L2028/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24298; Y10T428/24306; Y10T428/24322; Y10T428/24331; Y10T428/24628; Y10T428/24736
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
25 words
A structure according to claim 1, wherein all of said bosses are integrally joined to at least four other bosses by bands of thermoplastic material.
Claim 2
Dependent Claim
83 words
A structure according to claim 1, comprising a plurality of octagonally shaped bosses arranged in a regular pattern one at each intersection of an imaginary squared lattice or grid, and a plurality of square-shaped bosses, arranged in a regular pattern one at the center of each square of said imaginary lattice or grid, each of the square-shaped bosses being connected to four adjacent octagonally shaped bosses and each octagonally shaped boss being connected to four square-shaped bosses and to four octagonally shaped bosses.
Claim 3
Dependent Claim
25 words
The structure according to claim 1, comprising a regular pattern of octagonal bosses, hexagonal bosses and square bosses all interconnected by bands of thermoplastic material.
Claim 4
Dependent Claim
37 words
A structure according to claim 1, comprising a regular pattern of a plurality of square bosses and a plurality of bosses each of which is shaped like two squares spaced apart but joined by a connecting piece.
Claim 5
Dependent Claim
57 words
A structure according to claim 1, comprising a regular pattern of bosses of two different configurations, the bosses of one configuration being approximately square and each being integrally connected by bands to eight smaller substantially square bosses, each of said smaller bosses being integrally connected to two of said larger bosses and two of said smaller bosses.
Claim 6
Dependent Claim
16 words
A structure according to claim 1, wherein the bands joining the bosses are of different thickness.
Claim 7
Dependent Claim
139 words
A nonwoven openwork net structure of thermoplastic material, comprising at least one portion having a plurality of bosses arranged in a plurality of rows extending substantially uniformly throughout said at least one portion and bands of thermoplastic material integrally joining substantially all of said bosses to at least two other bosses, said bosses being of at least two different configurations; and at least one other portion having a plurality of bosses arranged in a plurality of rows extending substantially uniformly throughout said at least one other portion, and bands of thermoplastic material integrally joining substantially all of said bosses to at least two other bosses, all said bosses in said at least one other portion being of substantially the same configuration, and the area of the structure between the bosses and the bands being substantially devoid of thermoplastic material.
Claim 8
Dependent Claim
31 words
A structure according to claim 8, wherein each boss in said at least one other structure is integrally joined to four or six other such bosses by bands of thinner material.
Claim 9
Independent Claim
97 words
A method of producing an openwork net structure of thermoplastic material comprising a plurality of bosses which are of at least two different configurations and arranged in a plurality of rows extending substantially uniformly throughout the structure with bands integrally joining substantially all of said bosses to at least two other bosses, said method comprising biaxially stressing a sheet of thermoplastic material having a regular pattern of bosses of at least two different configurations on at least one surface thereof, until the material takes on a degree of permanent set and splits occur in the thinned material.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |