US4452023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fixing means
Assignee: RAKENNUSRUUVI Oy
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Filing: 1981-10-19
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Granted: 1984-06-05
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Expires: 2001-10-19
Abstract
Abstract A fixing means for attachment to a base (1), e.g. to a level concrete roof, of a thermal lagging (3), e.g. a mineral wool mat, said fixing means consisting of a screw (2) or other nail binding to the base and a washer (4) located on top of the lagging, this washer carrying a tubular recess (5) partly penetrating into the lagging (3) and the bottom (6) of which is pierced by the screw and within which the head of the screw (2) resides. To the end of the tubular recess (5) has been connected by stays (7) a plug (8) fitting into a hole drilled in the base (1) and into which the screw (2) can be screwed.
Inventors
- 👤 Erik Stahlberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:52
CPC Classifications
E; E04; E04D; E04D3/00; E04D3/36; E04D3/3601; E04D3/3603
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
96 words
A fixing means for attachment of a resilient thermal lagging, such as a mineral wool mat, to a base, such as a level roof of concrete, comprising a washer located on top of the lagging and having a hollow tube extending therefrom and penetrating partly into the lagging, a screw located in the interior of the tube and piercing the bottom of said tube, a plug to be tightly fitted into a drilled hole in the base, into which plug the screw can be screwed, and stays connecting said plug to the bottom of the tube.
Claim 2
Dependent Claim
96 words
A fixing means for attachment of a resilient thermal lagging, such as a mineral wool mat, to a base, such as a level roof of concrete, comprising a washer located on top of the lagging and having a hollow tube extending therefrom and penetrating partly into the lagging, a screw located in the interior of the tube and piercing the bottom of said tube, a plug to be tightly fitted into a drilled hole in the base, into which plug the screw can be screwed, and stays connecting said plug to the bottom of the tube.
Claim 3
Dependent Claim
32 words
Fixing means according to claim 1, characterized in that the stays consist of easily bendable ligaments formed by casting between the bottom of the tube and the plug of the same material.
Claim 4
Dependent Claim
20 words
Fixing means according to claim 1, characterized in that the plug and the stays constitute a substantially downwardly tapering end.
References Cited (Backward Citations)
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Cited
US3088361A
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US3236143A
Cited
US3257889A
Cited
US3979866A
Cited
US4309136A
Cited
US4380413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-06-05 | 1987-12-05 | 1988-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-05 | 1991-12-05 | 1992-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-05 | 1995-12-05 | 1996-06-05 | $7700.00 | Window Closed / Lapsed |