US4756653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastening element for securing packing sheets
Assignee: Rehau Plastiks GmbH
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Filing: 1983-09-23
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Granted: 1988-07-12
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Expires: 2003-09-23
Abstract
Abstract A fastening element for packing sheets comprises a body having a lateral surface; a thread provided on the lateral surface; a head plate situated at an end of the body and having a diameter larger than a largest diameter of the thread; and a recess extending in the head plate and terminating in the body. The recess is situated centrally with respect to the head plate and has a part configured for receiving a tool for turning the fastening element.
Inventors
- 👤 Hellmut Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:05
CPC Classifications
F; F16; F16B; F16B25/00; F16B23/00; F16B23/0007; F16B23/0038; F16B33/00; F16B33/006; Y; Y10; Y10S; Y10S411/00; Y10S411/904; Y10S411/908
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
130 words
A fastening element for packing sheets comprising (a) a body having a lateral surface; (b) a head plate having a diameter constituting the largest diameter of said fastening element and an axis of symmetry passing centrally through said body; said head plate being situated at an end of said body; (c) a thread having a spiral crest provided on said lateral surface; said thread extending such that the spiral crest is eccentric with respect to said axis of symmetry; said thread terminating in a point situated at an end of said body remote from said head plate; said point being located externally of said axis of symmetry; and (d) means in said head plate situated centrally with respect thereto and configured for receiving a tool for turning the fastening element.
Claim 2
Dependent Claim
130 words
A fastening element for packing sheets comprising (a) a body having a lateral surface; (b) a head plate having a diameter constituting the largest diameter of said fastening element and an axis of symmetry passing centrally through said body; said head plate being situated at an end of said body; (c) a thread having a spiral crest provided on said lateral surface; said thread extending such that the spiral crest is eccentric with respect to said axis of symmetry; said thread terminating in a point situated at an end of said body remote from said head plate; said point being located externally of said axis of symmetry; and (d) means in said head plate situated centrally with respect thereto and configured for receiving a tool for turning the fastening element.
Claim 3
Dependent Claim
24 words
A fastening element as defined in claim 1, wherein the total length of said fastening element approximately equals the diameter of said head plate.
Claim 4
Dependent Claim
41 words
A fastening element as defined in claim 1, wherein said body is conical and wherein said thread has a varying height; said height at any location on said body approximately corresponding to the diameter of the conical body at said location.
Claim 5
Dependent Claim
17 words
A fastening element as defined in claim 1, wherein said fastening element is of a plastic material.
Claim 6
Dependent Claim
27 words
A fastening element as defined in claim 1, wherein said recess has a polygonal cross-sectional shape in said head plate and a conical shape in said body.
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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) | 1991-07-12 | 1992-01-11 | 1992-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-12 | 1996-01-11 | 1996-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-12 | 2000-01-11 | 2000-07-12 | $7700.00 | Window Closed / Lapsed |