US3879143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scaffold and like structures
Assignee: C Evans and Sons Ltd
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Filing: 1973-10-10
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Granted: 1975-04-22
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Expires: 1993-10-10
Abstract
Abstract A connector assembly for use in builders scaffolding comprising a channel-shaped element adapted to be fixed to an upright support member, a hook element adapted to be fixed to a cross member and to enter into engagement with said channel-shaped member, and a wedge member mounted on said hook element to retain said hook element in engagement with said channel-shaped element. Said wedge member is captive in said hook element and the free end of said hook element, in its position of use, is spaced from said upright support member.
Inventors
- 👤 Peter Eric Gostling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:10
CPC Classifications
E; E04; E04G; E04G7/00; E04G7/30; E04G7/302; E04G7/306; E04G7/307; F; F16; F16B; F16B2200/00; F16B2200/40; Y; Y10; Y10T; Y10T403/00; Y10T403/30; Y10T403/76
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
162 words
A connector assembly for use in interconnecting cross members with upright support members in builders scaffolding, said assembly comprising a channel-shaped element having a base wall and side walls provided to be fixed to one of said upright support members with said base wall being spaced from the peripheral surface of said support member, a hook element provided to be fixed to one of said cross members and formed with a slot having a closed end to receive said base wall of said channel-shaped element, and a wedge member mounted on said hook element and positioned so that, in use, it is within said channel-shaped element and is operable to urge the wall of said slot remote from said support member firmly into engagement with the surface of said base wall of said channel-shaped element remote from said support member, the arrangement being such that the free end of said hook element is spaced from the peripheral surface of said support member.
Claim 2
Dependent Claim
162 words
A connector assembly for use in interconnecting cross members with upright support members in builders scaffolding, said assembly comprising a channel-shaped element having a base wall and side walls provided to be fixed to one of said upright support members with said base wall being spaced from the peripheral surface of said support member, a hook element provided to be fixed to one of said cross members and formed with a slot having a closed end to receive said base wall of said channel-shaped element, and a wedge member mounted on said hook element and positioned so that, in use, it is within said channel-shaped element and is operable to urge the wall of said slot remote from said support member firmly into engagement with the surface of said base wall of said channel-shaped element remote from said support member, the arrangement being such that the free end of said hook element is spaced from the peripheral surface of said support member.
Claim 3
Dependent Claim
162 words
A connector assembly for use in interconnecting cross members with upright support members in builders scaffolding, said assembly comprising a channel-shaped element having a base wall and side walls provided to be fixed to one of said upright support members with said base wall being spaced from the peripheral surface of said support member, a hook element provided to be fixed to one of said cross members and formed with a slot having a closed end to receive said base wall of said channel-shaped element, and a wedge member mounted on said hook element and positioned so that, in use, it is within said channel-shaped element and is operable to urge the wall of said slot remote from said support member firmly into engagement with the surface of said base wall of said channel-shaped element remote from said support member, the arrangement being such that the free end of said hook element is spaced from the peripheral surface of said support member.
Claim 4
Dependent Claim
162 words
A connector assembly for use in interconnecting cross members with upright support members in builders scaffolding, said assembly comprising a channel-shaped element having a base wall and side walls provided to be fixed to one of said upright support members with said base wall being spaced from the peripheral surface of said support member, a hook element provided to be fixed to one of said cross members and formed with a slot having a closed end to receive said base wall of said channel-shaped element, and a wedge member mounted on said hook element and positioned so that, in use, it is within said channel-shaped element and is operable to urge the wall of said slot remote from said support member firmly into engagement with the surface of said base wall of said channel-shaped element remote from said support member, the arrangement being such that the free end of said hook element is spaced from the peripheral surface of said support member.
Claim 5
Dependent Claim
38 words
An assembly as claimed in claim 1, in which the distance between the longitudinal axis of said support member and the base wall of said channel-shaped element is the same irrespective of the diameter of said support member.
Claim 6
Dependent Claim
33 words
An assembly as claimed in claim 2, in which said wall of said slot remote from said support member lies parallel with said base wall of said channel-shaped element of said support member.
Claim 7
Dependent Claim
37 words
An assembly as claimed in claim 1, in which said hook member is in the form of a channel having side walls and a base wall, said side walls being formed with aligned openings defining said slot.
Claim 8
Dependent Claim
41 words
An assembly as claimed in claim 4, in which the free ends of said side walls of said channel are formed with outwardly extending wing portions said hook element being fixed to said cross member by means of said wing portions.
Claim 9
Dependent Claim
25 words
An assembly as claimed in claim 5, in which said base wall of said channel is inclined relative to the plane of said wing portions.
Claim 10
Dependent Claim
43 words
An assembly as claimed in claim 6, in which said wedge member is positioned within said channel and is formed with relatively inclined surfaces to co-act with said base wall of said channel-shaped element and with said inclined base wall of said channel.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |