Patent US5120994A successfully refreshed from Google Patents.
Patent US6268809B1 successfully refreshed from Google Patents.
US4624092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roofing membrane fastener
Assignee: Illinois Tool Works Inc
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Filing: 1984-10-22
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Granted: 1986-11-25
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Expires: 2004-10-22
Abstract
Abstract A two part fastener is provided for securing an elastomeric membrane on a roof deck or the like. The fastener includes a post secured to the roof deck by a screw and having a peripheral laterally extending flange at the upper edge. The membrane is draped over the post and a ring is installed over the membrane and post. The ring includes a plurality of inwardly and upwardly directed resilient fingers lying on a conical surface. The fingers snap over and then lock beneath the membrane and flange. The upper end of the post is recessed so that part of the membrane can be stretched into it during assembly and then released to reduce stress in the membrane.
Inventors
- 👤 Albert R. Baginski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:12
CPC Classifications
F; F16; F16B; F16B5/00; F16B5/06; F16B5/0692; E; E04; E04D; E04D5/00; E04D5/14; E04D5/141; E04D5/143; E04D5/144; E04D5/145; E04D5/147; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44034
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
151 words
A two part fastener for a resilient membrane such as for roofing and comprising a post having upper lateral protuberance means and a recessed upper surface having an upper relatively shallow frustoconical surface and a lower relatively steep frustoconical section, means for securing said post to a supporting surface such as a roof deck, a resilient membrane being drapeable over said post, and a retaining ring telescopible over said post and a membrane draped over said post, said ring having a rim adapted to rest on a membrane on said supporting surface, and an open-top substantially frustoconical section comprising a plurality of arcuately spaced fingers extending upwardly and inwardly from said rim and having an enlarged upper edge, said section being radially resilient to permit said upper edge to pass over said post lateral protuberance means and a membrane thereon and to engage beneath said protuberance means to grip a membrane.
Claim 2
Dependent Claim
151 words
A two part fastener for a resilient membrane such as for roofing and comprising a post having upper lateral protuberance means and a recessed upper surface having an upper relatively shallow frustoconical surface and a lower relatively steep frustoconical section, means for securing said post to a supporting surface such as a roof deck, a resilient membrane being drapeable over said post, and a retaining ring telescopible over said post and a membrane draped over said post, said ring having a rim adapted to rest on a membrane on said supporting surface, and an open-top substantially frustoconical section comprising a plurality of arcuately spaced fingers extending upwardly and inwardly from said rim and having an enlarged upper edge, said section being radially resilient to permit said upper edge to pass over said post lateral protuberance means and a membrane thereon and to engage beneath said protuberance means to grip a membrane.
Claim 3
Dependent Claim
17 words
A fastener as set forth in claim 1 wherein said rim has upper and lower flat surfaces.
Claim 4
Dependent Claim
19 words
A fastener as set forth in claim 2 wherein said rim has an axially extending cylindrical section upstanding therefrom.
Claim 5
Dependent Claim
19 words
A fastener as set forth in claim 1 wherein said rim has an axially extending cylindrical section upstanding therefrom.
Claim 6
Dependent Claim
21 words
A fastener as set forth in claim 1 wherein the upper edge of said substantially frustoconical section comprises a bulbous enlargement.
Claim 7
Dependent Claim
150 words
A two part fastener for a resilient membrane such as for roofing and comprising a post having upper lateral protuberance means at an upper end thereof, means at a lower end of said post for securing said post to a supporting surface such as a roof deck, said post having an upper surface with a recess therein, said recess tapering inwardly from said upper end thereof to said lower end thereof, a resilient membrane being drapeable over said post, and a retaining ring telescopible over said post and a membrane draped over said post, said ring having a rim adapted to rest on a membrane on said supporting surface, and a plurality of resilient fingers extending inwardly and upwardly from said rim, said fingers having upper ends adapted to pass over said lateral protuberance means and a membrane thereon and to engage beneath said protuberance means to grip a membrane.
Claim 8
Dependent Claim
150 words
A two part fastener for a resilient membrane such as for roofing and comprising a post having upper lateral protuberance means at an upper end thereof, means at a lower end of said post for securing said post to a supporting surface such as a roof deck, said post having an upper surface with a recess therein, said recess tapering inwardly from said upper end thereof to said lower end thereof, a resilient membrane being drapeable over said post, and a retaining ring telescopible over said post and a membrane draped over said post, said ring having a rim adapted to rest on a membrane on said supporting surface, and a plurality of resilient fingers extending inwardly and upwardly from said rim, said fingers having upper ends adapted to pass over said lateral protuberance means and a membrane thereon and to engage beneath said protuberance means to grip a membrane.
Claim 9
Dependent Claim
17 words
A fastener as set forth in claim 6 wherein said rim has upper and lower flat surfaces.
Claim 10
Dependent Claim
17 words
A fastener as set forth in claim 7 wherein said rim has a cylindrical section upstanding therefrom.
Claim 11
Dependent Claim
19 words
A fastener as set forth in claim 6 wherein said rim has an axially extending cylindrical section upstanding therefrom.
Claim 12
Dependent Claim
18 words
A fastener as set forth in claim 6 wherein the upper ends of said fingers comprise bulbous enlargements.
Claim 13
Dependent Claim
16 words
A fastener as set forth in claim 6 wherein said fingers are substantially trapizoidal in shape.
Claim 14
Dependent Claim
18 words
A fastener as set forth in claim 11 wherein the upper ends of said fingers comprise bulbous enlargements.
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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) | 1989-11-24 | 1990-05-26 | 1990-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-24 | 1994-05-26 | 1994-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-24 | 1998-05-26 | 1998-11-25 | $7700.00 | Window Closed / Lapsed |