US4885201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film made from a weldable polymer material with projections
Assignee: SLT Lining Tech GmbH
•
Filing: 1988-10-14
•
Granted: 1989-12-05
•
Expires: 2008-10-14
Abstract
Abstract A film made from a weldable polymer material with projections. The projections are formed by particles which are applied, in particular sprayed, in the molten state onto the film surface. The welding factor is preferably significantly below 1.
Inventors
- 👤 Michael Brandt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:24
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/02; B05D5/00; B05D5/02; B29; B29C; B29C48/00; B29C48/03; B29C48/07; B29C48/08; B29C65/00; B29C65/02; B29C65/022; B29C65/028; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/47; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; C; C08; C08J; C08J5/00; C08J5/12; C08J5/121; B05D1/00; B05D1/02; B05D1/12; B05D2401/00; B05D2401/30; B05D2401/32; B29C48/001; B29C48/0011; B29C66/71; B29C66/735; B29C66/7352; B29K; B29K2995/00; B29K2995/0037; B29K2995/0072; B29L; B29L2007/00; B29L2007/001; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/24405; Y10T428/24628; Y10T428/24669; Y10T428/24802; Y10T428/24893; Y10T428/25; Y10T428/254; Y10T428/29; Y10T428/2982
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
40 words
An increased friction, damage resistant film comprising a film substrate having at least one film surface; a plurality of friction-increasing projections attached to said film surface by a plurality of welds characterized by a welding factor of significantly below 1.
Claim 2
Dependent Claim
40 words
An increased friction, damage resistant film comprising a film substrate having at least one film surface; a plurality of friction-increasing projections attached to said film surface by a plurality of welds characterized by a welding factor of significantly below 1.
Claim 3
Dependent Claim
35 words
A film as claimed in claim 1, wherein the projections can be detached from the film surface by means of a force directed parallel to the film surface without significant damage to the film surface.
Claim 4
Dependent Claim
19 words
A film as claimed in claim 1 or 2, wherein the projections (2) have an irregular shape and distribution.
Claim 5
Dependent Claim
25 words
A film as claimed in claim 3, wherein the projections (2) have an average height above the film surface of less than about 2 mm.
Claim 6
Dependent Claim
41 words
A film as claimed in any of claims 1 to 4, comprising a second film surface and a plurality of projections attached to said second film surface by a plurality of welds characterized by a welding factor of significantly below 1.
Claim 7
Dependent Claim
20 words
A film as claimed in claim 1, wherein the projections are oblong and are bonded recumbently on the film surface.
Claim 8
Dependent Claim
19 words
A film as claimed in claim 6, wherein the length/thickness ratio of the projections (2) is at least 1.
Claim 9
Dependent Claim
12 words
A film as claimed in claim 1, wherein the projections are round.
Claim 10
Dependent Claim
19 words
A film as claimed in claim 8, wherein the length/thickness ratio of the projections (2) is at least 1.
Claim 11
Dependent Claim
17 words
A film as claimed in claim 1, wherein the projections (2) have an irregular shape and distribution.
Claim 12
Dependent Claim
25 words
A film as claimed in claim 10, wherein the projections (2) have an average height above the film surface of less than about 2 mm.
References Cited (Backward Citations)
US2793136A
Cited
US4239797A
Cited
US4488918A
Cited
US4608287A
Cited
US4501783A
Cited
US4543106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-12-04 | 1993-06-05 | 1993-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-04 | 1997-06-05 | 1997-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-04 | 2001-06-05 | 2001-12-05 | $7700.00 | Window Closed / Lapsed |