US4900208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roofing fastener
Assignee: Individual
•
Filing: 1988-06-09
•
Granted: 1990-02-13
•
Expires: 2008-06-09
Abstract
Abstract A fastener for insulated roofing comprises a non-metallic, screw-threaded shank, having a penetrating point at one end of the shank and a transverse plate carried at the other end of the shank. The shank and transverse plate are preferably integrally method out of a polyetherimide resin formulation which has a tensile strength of at least 15,000 psi. as tested by ASTM D638. Such a fastener has a great advantage in terms of cost and lack of corrodability, while still exhibiting the required strength. Also, a universal driver socket is provided.
Inventors
- 👤 Norbert O. Kaiser
- 👤 Eric W. Balinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:24
CPC Classifications
F; F16; F16B; F16B33/00; F16B33/006; E; E04; E04D; E04D3/00; E04D3/36; E04D3/3601; E04D3/3603; F16B25/00; F16B25/001; F16B25/0031; F16B25/10; F16B25/103; F16B33/008; F16B5/00; F16B5/02; F16B5/0275; Y; Y10; Y10S; Y10S411/00; Y10S411/90; Y10S411/901; Y10S411/904; Y10S411/908; Y10S411/914
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
92 words
A fastener for insulated roofing which comprises a nonmetallic, screw-threaded shank, a penetrating point at one end of said shank, and a transverse plate carried at the other end of said shank, said shank and transverse plate being integrally molded out of a polyetherimide resin formulation which has a tensile strength of at least 15,000 psi as tested by ASTM D638, in which the penetrating point of said nonmetallic, screw-threaded shank comprises a core of said resin formulation integral with the remainder of said shank, said core being coated with metal plating.
Claim 2
Dependent Claim
92 words
A fastener for insulated roofing which comprises a nonmetallic, screw-threaded shank, a penetrating point at one end of said shank, and a transverse plate carried at the other end of said shank, said shank and transverse plate being integrally molded out of a polyetherimide resin formulation which has a tensile strength of at least 15,000 psi as tested by ASTM D638, in which the penetrating point of said nonmetallic, screw-threaded shank comprises a core of said resin formulation integral with the remainder of said shank, said core being coated with metal plating.
Claim 3
Dependent Claim
14 words
The fastener of claim 1 in which said plastic formulation is glass fiber filled.
Claim 4
Dependent Claim
13 words
The fastener of claim 1 which is 3 to 12 inches in length.
Claim 5
Dependent Claim
20 words
The fastener of claim 3 in which said resin formulation contains 5 to 50 percent by weight of glass fibers.
Claim 6
Dependent Claim
30 words
The fastener of claim 1 in which the screw threads of said shank define step members that inhibit reverse rotation of said shank after screw advancement into an insulated roof.
Claim 7
Dependent Claim
40 words
The fastener of claim 1 in which said plate defines on its side facing said shank a plurality of angled projections that inhibit reverse rotation of said fastener after screw advancement of said projections into engagement with an insulated roof.
Claim 8
Dependent Claim
63 words
The fastener of claim 1 in which said transverse plate defines a flat, outer surface through which a driving socket opens, said driving socket defining an outer section of polygonal cross-section, and an intermediate section which comprises a plurality of radially inwardly projecting members separated by radial slots, whereby said socket can receive for driving a plurality of different types of driving members.
Claim 9
Dependent Claim
17 words
The fastener of claim 7 in which said driving socket also defines a generally conical bottom section.
Claim 10
Dependent Claim
88 words
A fastener for insulated roofing which comprises a nonmetallic, screw-threaded shank, a penetrating point at one end of said shank, and a transverse plate carried at the other end of said shank, said shank and transverse plate being integrally molded out of a polyetherimide resin formulation which has a tensile strength of at least 15,000 psi as tested by ASTM D638, the screw threads of said shank having axially displaced portions defining step members that inhibit reverse rotation of said shank after screw advancement into an insulated roof.
Claim 11
Dependent Claim
88 words
A fastener for insulated roofing which comprises a nonmetallic, screw-threaded shank, a penetrating point at one end of said shank, and a transverse plate carried at the other end of said shank, said shank and transverse plate being integrally molded out of a polyetherimide resin formulation which has a tensile strength of at least 15,000 psi as tested by ASTM D638, the screw threads of said shank having axially displaced portions defining step members that inhibit reverse rotation of said shank after screw advancement into an insulated roof.
Claim 12
Dependent Claim
17 words
The fastener of claim 9 in which said resin formulation contains 5-50% by weight of glass fibers.
Claim 13
Dependent Claim
25 words
The fastener of claim 9 in which said penetrating point is defined by a metal insert member carried of said shank at said one end.
Claim 14
Dependent Claim
28 words
The fastener of claim 9 in which the penetrating point comprises a core of plastic integral with said shank, said core of plastic being coated with metal plating.
Claim 15
Dependent Claim
13 words
The fastener of claim 9 which is 3 to 12 inches in length.
Claim 16
Dependent Claim
68 words
The fastener of claim 9 in which said transverse plate defines a flat outer surface, a driving socket defined through said transverse plate at the center thereof, said driving socket defining an outer section of polygonal cross-section and an intermediate section which comprises a plurality of radially inwardly projecting members separated by radial slots, whereby socket can receive for driving a plurality of different types of driving members.
Claim 17
Dependent Claim
17 words
The fastener of claim 14 in which the driving socket also defines a generally conical bottom section.
References Cited (Backward Citations)
US1088892A
Cited
US1465148A
Cited
US1933332A
Cited
US2037586A
Cited
US2122915A
Cited
US2173707A
Cited
US2993950A
Cited
US3803085A
Cited
US4003175A
Cited
FR2361568A1
Cited
DE2756494A1
Cited
CH645437A5
Cited
US4361997A
Cited
US4354725A
Cited
GB2098693A
Cited
NL8105373A
Cited
US4453361A
Cited
US4568229A
Cited
US4718801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-12 | 1993-08-14 | 1994-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-12 | 1997-08-14 | 1998-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-12 | 2001-08-14 | 2002-02-13 | $7700.00 | Window Closed / Lapsed |