Patent US4718787A successfully refreshed from Google Patents.
US4718787A
Expired / Lapsed
US
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Connector for scaffolding or similar structure and process of assembly thereof
Assignee: Cegedur Societe de Transformation de lAluminium Pechiney SA
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Filing: 1986-02-26
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Granted: 1988-01-12
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Expires: 2006-02-26
Abstract
Abstract A connector for scaffolding or similar structure permitting vertical poles to be connected to longitudinal transverse members or bars includes a star-shaped portion with a central bore having a plurality of arms which at their ends each carry a pyramid-conical opening into which engages a pyramid-conical or conical hook. A clip which is movable about a horizontal axis makes it possible to avoid accidental dismantling of the assembly.
Inventors
- 👤 Kamel Bahloul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:51
CPC Classifications
E; E04; E04G; E04G7/00; E04G7/30; E04G7/302; E04G7/306; E04G7/308; F; F16; F16B; F16B7/00; F16B7/22; Y; Y10; Y10T; Y10T403/00; Y10T403/30; Y10T403/34; Y10T403/341; Y10T403/345; Y10T403/346
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
140 words
A scaffolding connector comprising: a star-shaped element having a central bore through which a vertical pole may be inserted, and having a plurality of arms having openings therein, and hooking elements connectable to transverse scaffolding members, and each of said hooking elements having hooks fittable in said openings, wherein an interior surface of said openings and an exterior surface of said hooks each have a pyramid-conical shape, said pyramid-conical shape comprising a pyramid and cone superimposed on one another such that a periphery of a section transverse to a longitudinal axis of one of said hooks and through said one of said hooks, as well as a periphery of a section transverse to a central axis of one of said openings and through said one of said openings, has at least one of conical shape portions and pyramid shape portions.
Claim 2
Dependent Claim
140 words
A scaffolding connector comprising: a star-shaped element having a central bore through which a vertical pole may be inserted, and having a plurality of arms having openings therein, and hooking elements connectable to transverse scaffolding members, and each of said hooking elements having hooks fittable in said openings, wherein an interior surface of said openings and an exterior surface of said hooks each have a pyramid-conical shape, said pyramid-conical shape comprising a pyramid and cone superimposed on one another such that a periphery of a section transverse to a longitudinal axis of one of said hooks and through said one of said hooks, as well as a periphery of a section transverse to a central axis of one of said openings and through said one of said openings, has at least one of conical shape portions and pyramid shape portions.
Claim 3
Dependent Claim
44 words
The connector of claim 1, wherein a pyramid shape defining said pyramid shape portions is in secant relationship to a cone shape defining said conical shape portions and external thereto such that said transverse section has alternating conical shape portions and pyramid shape portions.
Claim 4
Dependent Claim
11 words
The connector according to claim 1 wherein said hooks are frustoconical.
Claim 5
Dependent Claim
24 words
The connector of claim 2 wherein said conical and pyramid shapes have axes which are coaxial and parallel to the length of said pole.
Claim 6
Dependent Claim
15 words
The connector of claim 2 wherein said pyramid and conical portions have the same apex.
Claim 7
Dependent Claim
37 words
The connector of claim 1 including a safety clip pivoted to each said hooking element about a horizontal axis, and engageable with one said arm when said hook is in said opening of said one said arm.
Claim 8
Dependent Claim
31 words
The connector of claim 1, wherein an upper end of each said arm defines a bevel or inclined surface extending at an angle of from 10° to 80° to the horizontal.
Claim 9
Dependent Claim
20 words
The connector of claim 1, including at least one internal annular bead in said central bore of the star-shaped element.
Claim 10
Dependent Claim
15 words
The connector of claim 8, wherein said internal bead has at least one axial notch.
Claim 11
Dependent Claim
26 words
The connector of claim 1, including a connecting sleeve for each said hooking element, each said connecting sleeve having at least one external transverse circular groove.
Claim 12
Dependent Claim
15 words
The connector of claim 10, wherein each said connecting sleeve has an external longitudinal flat.
Claim 13
Dependent Claim
26 words
The connector of claim 1, wherein said hooking elements are formed of Al alloy and include an axial insert which projects therefrom at two ends thereof.
Claim 14
Dependent Claim
37 words
The connector of claim 1, wherein a pyramid shape defining said pyramid shape portions is in tangential relationship to a cone shape defining said conical shape portions and external thereto such that said transverse section is pyramidal.
Claim 15
Dependent Claim
23 words
The connector of claim 1, in combination with said pole fitted in said central bore and fixed to said star-shaped element by magneto-forming.
Claim 16
Dependent Claim
22 words
The connector of claim 1, in combination with said pole fitted in said central bore and mechanically fixed to said star-shaped element.
Claim 17
Dependent Claim
25 words
The connector of claim 1 including sleeves mechanically fixed to said hooking elements and scaffolding members for connecting said hooking elements to said scaffolding members.
Claim 18
Dependent Claim
31 words
The connector of claim 1 including sleeves fixed to said hooking elements and scaffolding members by deformation of said sleeves by magneto-forming for connecting said hooking members to said scaffolding members.
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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) | 1991-01-11 | 1991-07-13 | 1992-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-11 | 1995-07-13 | 1996-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-11 | 1999-07-13 | 2000-01-12 | $7700.00 | Window Closed / Lapsed |