Patent US4221028A successfully refreshed from Google Patents.
US4221028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for mounting a flexible film or the like
Assignee: Individual
•
Filing: 1979-05-18
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Granted: 1980-09-09
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Expires: 1999-05-18
Abstract
Abstract An arrangement for mounting a film to a substrate has an inner clamping member which is connected to the substrate and has an undercut portion, and an outer clamping member which surrounds the film placed on the inner member in the region of the undercut portion of the inner clamping so that the film is clamped between the inner clamping member and the outer clamping member. The outer clamping member is formed as an open spring ring. It may have two end projections which are bent from each other so as to facilitate engagement of the ring by pliers. A locking member may be fitted over the end projections of the spring ring. The spring ring may be coated by a synthetic plastic material.
Inventors
- 👤 Artur Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:35
CPC Classifications
E; E04; E04D; E04D5/00; E04D5/14; E04D5/144; E04D5/147; E04D5/141; E04D5/143; E04D5/145; F; F16; F16B; F16B5/00; F16B5/06; F16B5/0692; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44017; Y10T24/44034
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
154 words
An arrangement for mounting a flexible film or the like, particularly to seal a substrate, comprising an inner clamping member connected with a substrate and having a relatively large outer surface on which a film is placed and an undercut portion with also a relatively large outer surface; means for connecting said inner clamping member with the substrate and formed by a connecting element which is separate from and has an outer surface which is considerably smaller than that of said inner clamping member; and an outer clamping member formed by a metallic corrosion-resistant spring ring which has a relatively small circular cross-section and relatively large diameter and inner circumferential surface and surrounds the film in the region of said undercut portion of said inner clamping member, so that the film is easily clamped by and firmly held between said clamping members over a large surface of the film without being damaged or loosened.
Claim 2
Dependent Claim
154 words
An arrangement for mounting a flexible film or the like, particularly to seal a substrate, comprising an inner clamping member connected with a substrate and having a relatively large outer surface on which a film is placed and an undercut portion with also a relatively large outer surface; means for connecting said inner clamping member with the substrate and formed by a connecting element which is separate from and has an outer surface which is considerably smaller than that of said inner clamping member; and an outer clamping member formed by a metallic corrosion-resistant spring ring which has a relatively small circular cross-section and relatively large diameter and inner circumferential surface and surrounds the film in the region of said undercut portion of said inner clamping member, so that the film is easily clamped by and firmly held between said clamping members over a large surface of the film without being damaged or loosened.
Claim 3
Dependent Claim
16 words
An arrangement as defined in claim 1, wherein said spring ring is constituted of rust-proof steel.
Claim 4
Dependent Claim
33 words
An arrangement as defined in claim 1, wherein said inner clamping member has a predetermined maximum transverse dimension, said undercut portion having a transverse dimension which is smaller than said maximum transverse dimension.
Claim 5
Dependent Claim
31 words
An arrangement as defined in claim 3, wherein said undercut portion of said inner clamping member has a section which has a cross section decreasing in a direction toward the substrate.
Claim 6
Dependent Claim
39 words
An arrangement as defined in claim 4, wherein said outer portion of said inner clamping member is spaced from said first-mentioned portion in a direction away from the substrate and has a cross section reducing in the latter-mentioned direction.
Claim 7
Dependent Claim
13 words
An arrangement as defined in claim 1, wherein said spring ring is open.
Claim 8
Dependent Claim
31 words
An arrangement as defined in claim 6, wherein said open spring ring has two end and two projections at said ends which are bent in a direction away from one another.
Claim 9
Dependent Claim
26 words
An arrangement as defined in claim 7, wherein said spring ring has an axis, said projections of said spring ring being bent in diametrically opposite directions.
Claim 10
Dependent Claim
25 words
An arrangement as defined in claim 7; and further comprising a locking member which is fitted simultaneously onto both said projections of said spring ring.
Claim 11
Dependent Claim
14 words
An arrangement as defined in claim 9, wherein said locking member is circumferentially closed.
Claim 12
Dependent Claim
18 words
An arrangement as defined in claim 1, wherein said spring ring is coated by a synthetic plastic material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-09 | 1984-03-10 | 1984-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-09 | 1988-03-10 | 1988-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-09 | 1992-03-10 | 1992-09-09 | $7700.00 | Window Closed / Lapsed |