US4619541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Builders scaffolding
Assignee: RMD Kwikform Ltd
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Filing: 1984-10-02
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Granted: 1986-10-28
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Expires: 2004-10-02
Abstract
Abstract A releasably engageable builders scaffolding assembly comprises an upright member, cross members and brace members wherein a cross member and a brace member are connected to the upright member by means of a wedge securing both said members to a socket on the upright member. A cross member is connected to the upright member by means of a channel shaped connector straddling a socket and affording a space therebetween for the reception of a grooved spigot extending from a brace member which spigot is retainable by the wedge passing through the cross member connector and a socket.
Inventors
- 👤 Dennis W. Lovering
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:51
CPC Classifications
E; E04; E04G; E04G7/00; E04G7/30; E04G7/302; E04G7/306; E04G7/307; E04G7/32; F; F16; F16B; F16B9/00; F16B9/01; Y; Y10; Y10T; Y10T403/00; Y10T403/30
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
193 words
A releasably engageable builders scaffolding assembly comprising an upright member, a brace member, a cross member and connecting means for detachably securing the upright member and cross member together, the connecting means comprising a socket mounted on the exterior of the upright member and being open at each of its two opposite ends which are spaced apart along the length of the upright member, and a connector at one end of the cross member including two limbs which are spaced apart vertically to permit the socket to be received therebetween, each limb having a respective abutment face to abut the upright member, each limb further being provided with a respective opening which receives a wedge clamping member forming part of the connecting means; characterized in that the brace member is provided at one end thereof with a spigot extending perpendicularly therefrom, said spigot having a recess extending circumferentially thereof wherein an edge of the wedge clamping member is engageable to retain said spigot between the connector and an adjacent part of the socket, whereby said upright member, said brace member and said cross member are all releasably engaged together to form said assembly.
Claim 2
Dependent Claim
193 words
A releasably engageable builders scaffolding assembly comprising an upright member, a brace member, a cross member and connecting means for detachably securing the upright member and cross member together, the connecting means comprising a socket mounted on the exterior of the upright member and being open at each of its two opposite ends which are spaced apart along the length of the upright member, and a connector at one end of the cross member including two limbs which are spaced apart vertically to permit the socket to be received therebetween, each limb having a respective abutment face to abut the upright member, each limb further being provided with a respective opening which receives a wedge clamping member forming part of the connecting means; characterized in that the brace member is provided at one end thereof with a spigot extending perpendicularly therefrom, said spigot having a recess extending circumferentially thereof wherein an edge of the wedge clamping member is engageable to retain said spigot between the connector and an adjacent part of the socket, whereby said upright member, said brace member and said cross member are all releasably engaged together to form said assembly.
Claim 3
Dependent Claim
126 words
An assembly as claimed in claim 1 further characterized in that the abutment face of an upper limb of the connector comprises a face of a flange depending downwardly from that portion of said upper limb having the wedge clamping member opening therein, a lower free edge of the flange providing a socket engaging edge which is adapted to contact the upper edge of the socket to define a space between said portion of said upper limb and the upper edge of the socket receiving the spigot of the brace member therein, the spacing between the socket engaging edge of said flange of said upper limb and the socket engaging face of the other limb of the connector being such as to receive said socket therebetween.
Claim 4
Dependent Claim
79 words
An assembly as claimed in claim 2 further characterized in that the free edge of the flange includes said socket engaging edge and an abutment shoulder extending downwardly of said socket engaging edge whereby said socket engaging edge and abutment shoulder locate the cross member relative to a socket on the upright member when the connector of the cross member is initially presented transversely to said socket prior to the connection of the cross member to the upright member.
Claim 5
Dependent Claim
38 words
An assembly as claimed in claim 3 further characterized in that the socket engaging edge of the flange is a planar edge and said abutment shoulder comprises a planar abutment edge extending perpendicularly to said socket engaging edge.
Claim 6
Dependent Claim
41 words
An assembly as claimed in claim 1 further characterised in that the spigot on the brace member is retained by said wedge clamping member between said, in use, upper limb of the connector means and the upper edge of the socket.
Claim 7
Dependent Claim
38 words
An assembly as claimed in claim 1 further characterised in that the spigot on the brace member is of cylindrical form and includes an annular groove around its periphery engagable by an edge of the wedge clamping member.
Claim 8
Dependent Claim
179 words
A brace member for use in a releasably engageable builders scaffolding assembly comprising an upright member, said brace member, a cross member and connecting means for detachably securing the upright member and cross-member together; the connecting means comprising a socket mounted on the exterior of the upright member and being open at each of its two opposite ends which are spaced apart along the length of the upright member, and a connector at one end of the cross member including two limbs which are spaced apart vertically to permit the socket to be received therebetween, each limb having a respective abutment face to abut the upright member, each limb further being provided with a respective opening which receives a wedge clamping member forming part of the connecting means; characterized in that said brace member is provided at each end thereof with a spigot extending perpendicularly therefrom, each said spigot having a recess extending circumferentially thereof wherein an edge of the wedge clamping member is engageable to retain said spigot between the connector and an adjacent part of the socket.
Claim 9
Dependent Claim
179 words
A brace member for use in a releasably engageable builders scaffolding assembly comprising an upright member, said brace member, a cross member and connecting means for detachably securing the upright member and cross-member together; the connecting means comprising a socket mounted on the exterior of the upright member and being open at each of its two opposite ends which are spaced apart along the length of the upright member, and a connector at one end of the cross member including two limbs which are spaced apart vertically to permit the socket to be received therebetween, each limb having a respective abutment face to abut the upright member, each limb further being provided with a respective opening which receives a wedge clamping member forming part of the connecting means; characterized in that said brace member is provided at each end thereof with a spigot extending perpendicularly therefrom, each said spigot having a recess extending circumferentially thereof wherein an edge of the wedge clamping member is engageable to retain said spigot between the connector and an adjacent part of the socket.
Claim 10
Dependent Claim
41 words
A brace member as claimed in claim 7 further characterized in that each said spigot on the brace member is of cylindrical form and has an annular groove extending circumferentially thereof wherein an edge of the wedge clamping member is engageable.
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) | 1989-10-27 | 1990-04-28 | 1990-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-27 | 1994-04-28 | 1994-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-27 | 1998-04-28 | 1998-10-28 | $7700.00 | Window Closed / Lapsed |