US5785478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastener
Assignee: Building Materials Corp of America
•
Filing: 1997-03-07
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Granted: 1998-07-28
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Expires: 2017-03-07
Abstract
Abstract A fastener comprising a shaft having a preselected length for use in fastening at least two materials together. A head extends radially around the shaft at one end. The shaft is provided with an enlarged shaft portion located in proximity to the head. The enlarged shaft portion has a pair of opposite ends, a cylindrical center portion and a pair of frusto-conical tapered portions. Each of the frusto-conical tapered portions extends from the center portion to one of the ends. The enlarged shaft portion has a length less than the length of the shaft.
Inventors
- 👤 Martin J. Rotter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:41
CPC Classifications
F; F16; F16B; F16B35/00; F16B35/04; F16B35/041; E; E04; E04D; E04D5/00; E04D5/14; E04D5/141; E04D5/142; E04D5/144; E04D5/145; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/0864; F16B15/00; E04D1/00; E04D1/34; E04D2001/3408; E04D2001/3423; E04D2001/3488; E04D2001/3491
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
103 words
A fastener comprising: a shaft having a preselected length, a head extending radially around the shaft at one end; and an enlarged shaft portion to control penetration depth located in proximity to the head formed as a single piece with the shaft, the enlarged shaft portion having a pair of opposite ends, a center portion and a frusto-conical tapered portion extending from the center portion toward the end of the enlarged shaft portion opposite to the head which terminates in a shoulder having a larger diameter than the shaft, the enlarged shaft portion having a length less than the length of the shaft.
Claim 2
Dependent Claim
103 words
A fastener comprising: a shaft having a preselected length, a head extending radially around the shaft at one end; and an enlarged shaft portion to control penetration depth located in proximity to the head formed as a single piece with the shaft, the enlarged shaft portion having a pair of opposite ends, a center portion and a frusto-conical tapered portion extending from the center portion toward the end of the enlarged shaft portion opposite to the head which terminates in a shoulder having a larger diameter than the shaft, the enlarged shaft portion having a length less than the length of the shaft.
Claim 3
Dependent Claim
12 words
The fastener of claim 1 further comprising threads located on the shaft.
Claim 4
Dependent Claim
17 words
The fastener of claim 2 wherein the head includes a recess adapted to receive a driving tool.
Claim 5
Dependent Claim
14 words
The fastener of claim 1 wherein the fastener is made of a plastic material.
Claim 6
Dependent Claim
11 words
The fastener of claim 1 wherein the shaft includes spiral flutes.
Claim 7
Dependent Claim
19 words
The fastener of claim 1 wherein the head is spaced from the enlarged shaft portion by a predetermined distance.
Claim 8
Dependent Claim
11 words
The fastener of claim 1 wherein the fastener is a nail.
Claim 9
Dependent Claim
124 words
A fastener for securing at least two materials together, the fastener comprising: a shaft of preselected length having a first end and a second end; a head extending radially around the shaft at the first end; an enlarged shaft portion for controlling penetration depth located in proximity to the head formed as a single piece with the shaft, the enlarged shaft portion having a pair of opposite ends, a center portion and a frusto-conical tapered portion, the frusto-conical tapered portion extending from the center portion to the end of the enlarged shaft portion opposite to the head, the frusto-conical tapered portion including a cutting edge circumferentially extending around the shaft, the enlarged shaft portion having a length less than the length of the shaft.
Claim 10
Dependent Claim
124 words
A fastener for securing at least two materials together, the fastener comprising: a shaft of preselected length having a first end and a second end; a head extending radially around the shaft at the first end; an enlarged shaft portion for controlling penetration depth located in proximity to the head formed as a single piece with the shaft, the enlarged shaft portion having a pair of opposite ends, a center portion and a frusto-conical tapered portion, the frusto-conical tapered portion extending from the center portion to the end of the enlarged shaft portion opposite to the head, the frusto-conical tapered portion including a cutting edge circumferentially extending around the shaft, the enlarged shaft portion having a length less than the length of the shaft.
Claim 11
Dependent Claim
12 words
The fastener of claim 8 further comprising threads located on the shaft.
Claim 12
Dependent Claim
17 words
The fastener of claim 9 wherein the head includes a recess adapted to receive a driving tool.
Claim 13
Dependent Claim
14 words
The fastener of claim 8 wherein the fastener is made of a plastic material.
Claim 14
Dependent Claim
11 words
The fastener of claim 8 wherein the shaft includes spiral flutes.
Claim 15
Dependent Claim
19 words
The fastener of claim 8 wherein the head is spaced from the enlarged shaft portion by a predetermined distance.
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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) | 2001-07-27 | 2002-01-26 | 2002-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-07-27 | 2006-01-26 | 2006-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-07-27 | 2010-01-26 | 2010-07-28 | $7700.00 | Window Closed / Lapsed |