US4993903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic fastening element with flexible centering straps
Assignee: TRW United Carr GmbH and Co
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Filing: 1989-11-16
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Granted: 1991-02-19
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Expires: 2009-11-16
Abstract
Abstract A plastic fastening element 1 for installation in a substantially rectangular opening of a support includes head part 2 and a holding part 3. Holding part 3 is substantially rectangular in cross section and is provided with lamella-form fingers 4 on the longer sides positioned in groups lying opposite each other. Stays (5) extend along the holding part 3 and limit the edge zone of the fingers. According to the invention, the stays are resilient straps 7 wherein the beginning zones 8 of the two straps 7 lie opposite each other on different sides of the holding part 3. The straps are arranged oblique to each other and merge into a conical push-in zone 23 with oblique side surfaces 24. The head part 3 is designed for holding a strip-form object.
Inventors
- 👤 Willibald Kraus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:34
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/06; F16B21/08; Y; Y10; Y10S; Y10S411/00; Y10S411/904; Y10S411/908; Y10S411/913; Y10T; Y10T24/00; Y10T24/30; Y10T24/309
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
181 words
A fastening element formed of plastic for installation into a substantially rectangular opening of a support member, said fastening element comprising: head part; a holding part having a substantially rectangular cross section joining said head part; lamella-form fingers on the longer sides of the holding part lying in groups opposite each other; stays (5) extending lengthwise of the holding part, said stays designed as resilient straps (7) having beginning zones (8) lying opposite each other on different sides of the holding part (3) and arranged diagonal to each other and merging into a push-in zone (23) having a conical configuration with oblique side surfaces (24), an intermediate body portion (10) adapted in cross section to the support opening positioned between the lamella-form fingers (4) and the head (2), the head part (2) comprising a base plate (12) adjoining the intermediate body portion (10) and a closing plate (13) arranged thereon in the form of an inverted U with laterally extending stays (14), the base plate (12) having at least one resilient zone (16) in the middle zone opposite the stays (14).
Claim 2
Dependent Claim
181 words
A fastening element formed of plastic for installation into a substantially rectangular opening of a support member, said fastening element comprising: head part; a holding part having a substantially rectangular cross section joining said head part; lamella-form fingers on the longer sides of the holding part lying in groups opposite each other; stays (5) extending lengthwise of the holding part, said stays designed as resilient straps (7) having beginning zones (8) lying opposite each other on different sides of the holding part (3) and arranged diagonal to each other and merging into a push-in zone (23) having a conical configuration with oblique side surfaces (24), an intermediate body portion (10) adapted in cross section to the support opening positioned between the lamella-form fingers (4) and the head (2), the head part (2) comprising a base plate (12) adjoining the intermediate body portion (10) and a closing plate (13) arranged thereon in the form of an inverted U with laterally extending stays (14), the base plate (12) having at least one resilient zone (16) in the middle zone opposite the stays (14).
Claim 3
Dependent Claim
21 words
A fastening element according to claim 1 wherein the resilient zone (16) has a projection (17) lying opposite the stay (14).
Claim 4
Dependent Claim
16 words
A fastening element according to claim 2 wherein that the projection (17) is triangular in shape.
Claim 5
Dependent Claim
28 words
A fastening element according to claim 1 wherein there is a gap (19) between the side zones (18) of the base plate (12) and the resilient zone (16).
Claim 6
Dependent Claim
30 words
A fastening element according to claim 4 wherein the base plate (12) has, on both sides, lying opposite the respective stay (14), a resilient zone (16) with a projection (17).
Claim 7
Dependent Claim
168 words
A fastening element formed of plastic for installation into a substantially rectangular opening of a support member, said fastening element comprising: a head part; a holding part having a substantially rectangular cross section joining said head part; lamella-form fingers on the longer sides of the holding part lying in groups opposite each other; stays (5) extending lengthwise of the holding part, said stays comprising elongated resilient straps (7) each having longitudinally spaced first and second end portions joined to a central body section, said straps positioned in pairs lying opposite each other on different sides of the holding part (3), the first end portions of each pair of straps arranged diagonal to the first end portions of the other pair of straps and merging into a push-in zone (23) having a conical configuration with oblique side surfaces (24), each of said straps being joined to said holding part only at its said first and second end portions with said central body section spaced outwardly of the holding part.
Claim 8
Dependent Claim
168 words
A fastening element formed of plastic for installation into a substantially rectangular opening of a support member, said fastening element comprising: a head part; a holding part having a substantially rectangular cross section joining said head part; lamella-form fingers on the longer sides of the holding part lying in groups opposite each other; stays (5) extending lengthwise of the holding part, said stays comprising elongated resilient straps (7) each having longitudinally spaced first and second end portions joined to a central body section, said straps positioned in pairs lying opposite each other on different sides of the holding part (3), the first end portions of each pair of straps arranged diagonal to the first end portions of the other pair of straps and merging into a push-in zone (23) having a conical configuration with oblique side surfaces (24), each of said straps being joined to said holding part only at its said first and second end portions with said central body section spaced outwardly of the holding part.
Claim 9
Dependent Claim
36 words
A fastening element according to claim 6, wherein the straps (7) have oppositely positioned end zone portions (9) adjacent said first and second longitudinally spaced ends with said end zone portions arranged oblique to each other.
Claim 10
Dependent Claim
19 words
A fastening element according to claim 6 wherein the straps (7) have an equal wall thickness throughout their length.
Claim 11
Dependent Claim
39 words
A fastening element according to claim 6 including an intermediate body portion (10) between the lamella-form fingers and the head part (2) and wherein the head part (2) lies at an oblique angle to the intermediate body portion (10).
Claim 12
Dependent Claim
32 words
A fastening element according to claim 6 wherein an intermediate body portion (10) adapted in cross section to the support opening is positioned between the lamella-form fingers (4) and the head (2).
Claim 13
Dependent Claim
22 words
A fastening element according to claim 10 wherein the intermediate body portion (10) carries at least one stay (11) which extends lengthwise.
Claim 14
Dependent Claim
41 words
A fastening element according to claim 10 wherein the head part (2) comprises a base plate (12) the intermediate body portion (10) and a closing plate (13) arranged thereon in the form of an inverted U with laterally extending stays (14).
Claim 15
Dependent Claim
26 words
A fastening element according to claim 12 wherein the width b of the stay (14) is less than the width B of the base plate (12).
Claim 16
Dependent Claim
173 words
A fastening element formed of plastic for installation into a substantially rectangular opening of a support member, said fastening element comprising: a head part; a holding part having a substantially rectangular cross section joining said head part; lamella-form fingers on the longer sides of the holding part lying in groups opposite each other; stays (5) extending lengthwise of the holding part, said stays designed as resilient straps (7) having beginning zones (8) lying opposite each other on different sides of the holding part (3) and arranged diagonal to each other and merging into a push-in zone (23) having a conical configuration with oblique side surfaces (24), an intermediate body portion (10) positioned between the lamella-form fingers (4) and the head part (2), the head part (2) lying at an oblique angle to the intermediate body portion (10), said head part (2) further including a laterally extending stay (14) and a base plate (12) having an under side which carries a resilient tongue (20) directed against the under side of said adjacent stay (14).
Claim 17
Dependent Claim
173 words
A fastening element formed of plastic for installation into a substantially rectangular opening of a support member, said fastening element comprising: a head part; a holding part having a substantially rectangular cross section joining said head part; lamella-form fingers on the longer sides of the holding part lying in groups opposite each other; stays (5) extending lengthwise of the holding part, said stays designed as resilient straps (7) having beginning zones (8) lying opposite each other on different sides of the holding part (3) and arranged diagonal to each other and merging into a push-in zone (23) having a conical configuration with oblique side surfaces (24), an intermediate body portion (10) positioned between the lamella-form fingers (4) and the head part (2), the head part (2) lying at an oblique angle to the intermediate body portion (10), said head part (2) further including a laterally extending stay (14) and a base plate (12) having an under side which carries a resilient tongue (20) directed against the under side of said adjacent stay (14).
Claim 18
Dependent Claim
26 words
A fastening element according to claim 14 wherein the resilient tongue (20) is joined on both sides by resilient zones (21) of the base plate (12).
Claim 19
Dependent Claim
159 words
A fastening element formed of plastic for installation into a substantially rectangular opening of a support member, said fastening element comprising: a head part; a holding part having a substantially rectangular cross section joining said head part; lamella-form fingers on the longer sides of the holding part lying in groups opposite each other; stays (5) extending lengthwise of the holding part, said stays designed as resilient straps (7) having beginning zones (8) lying opposite each other on different sides of the holding part (3) and arranged diagonal to each other and merging into a push-in zone (23) having a conical configuration with oblique side surfaces (24), in intermediate body portion (10) positioned between the lamella-form fingers (4) and the head (2), the head part (2) lying at an oblique angle to the intermediate body portion (10), said head part further including a base plate (12) having on the uppermost side a resilient zone (16) with a triangular projection (17).
Claim 20
Dependent Claim
159 words
A fastening element formed of plastic for installation into a substantially rectangular opening of a support member, said fastening element comprising: a head part; a holding part having a substantially rectangular cross section joining said head part; lamella-form fingers on the longer sides of the holding part lying in groups opposite each other; stays (5) extending lengthwise of the holding part, said stays designed as resilient straps (7) having beginning zones (8) lying opposite each other on different sides of the holding part (3) and arranged diagonal to each other and merging into a push-in zone (23) having a conical configuration with oblique side surfaces (24), in intermediate body portion (10) positioned between the lamella-form fingers (4) and the head (2), the head part (2) lying at an oblique angle to the intermediate body portion (10), said head part further including a base plate (12) having on the uppermost side a resilient zone (16) with a triangular projection (17).
Claim 21
Dependent Claim
155 words
A fastening element formed of plastic for installation into a substantially rectangular opening of a support member, said fastening element comprising: a head part; a holding part having a substantially rectangular cross section joining said head part; lamella-form fingers on the longer sides of the holding part lying in groups opposite each other; stays (5) extending lengthwise of the holding part, said stays designed as resilient straps (7) having beginning zones (8) lying opposite each other on different sides of the holding part (3) and arranged diagonal to each other and merging into a push-in zone (23) having a conical configuration with oblique side surfaces (24,) an intermediate body portion (10) positioned between the lamella-form fingers (4) and the head part (2), the head part (2) lying at an oblique angle to the intermediate zone (10), and said head part including an elongated closing plate (13) having an upwardly open groove (22) extending lengthwise thereof.
Claim 22
Dependent Claim
155 words
A fastening element formed of plastic for installation into a substantially rectangular opening of a support member, said fastening element comprising: a head part; a holding part having a substantially rectangular cross section joining said head part; lamella-form fingers on the longer sides of the holding part lying in groups opposite each other; stays (5) extending lengthwise of the holding part, said stays designed as resilient straps (7) having beginning zones (8) lying opposite each other on different sides of the holding part (3) and arranged diagonal to each other and merging into a push-in zone (23) having a conical configuration with oblique side surfaces (24,) an intermediate body portion (10) positioned between the lamella-form fingers (4) and the head part (2), the head part (2) lying at an oblique angle to the intermediate zone (10), and said head part including an elongated closing plate (13) having an upwardly open groove (22) extending lengthwise thereof.
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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) | 1994-02-18 | 1994-08-20 | 1995-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-18 | 1998-08-20 | 1999-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-18 | 2002-08-20 | 2003-02-19 | $7700.00 | Window Closed / Lapsed |