Patents Assigned to Kwikform Limited
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Patent number: 4648484Abstract: A support assembly for e.g. a scaffold support platform, comprises two horizontally spaced elongate elements 10 mounted between two longitudinally spaced supports 12 and 14 by means of respective hook connectors 16 and 18. The elements 10, connectors 16-18 and supports 12-14 are so dimensioned and arranged with respect to one another that upwardly directed disconnection of the connectors from their supports is prevented unless the element 10 is first deliberately displaced in a direction parallel to its longitudinal axis. Upon such displacement, the element 10 may be tilted upon one support to permit upwardly directed disconnection from the other support.Type: GrantFiled: June 12, 1986Date of Patent: March 10, 1987Assignee: GKN Kwikform LimitedInventor: Dennis W. Lovering
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Patent number: 4619541Abstract: 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.Type: GrantFiled: May 20, 1985Date of Patent: October 28, 1986Assignee: GKN Kwikform LimitedInventor: Dennis W. Lovering
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Patent number: 4309857Abstract: This invention relates to a supporting structure to support a soffit, comprising at least two parallel spaced vertically disposed props connected together by a horizontal member, each prop being provided with a supporting head which supports the primary shoring beam for supporting the soffit. The beam extends between the props, one end being fixed longitudinally of the beam and the opposite end being variable longitudinally of the beam, two or more adjacent beams being telescoped one within the other.Type: GrantFiled: August 20, 1979Date of Patent: January 12, 1982Assignee: Kwikform LimitedInventor: Dennis W. Lovering
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Patent number: 4095910Abstract: A scaffolding structure comprising upright members connected together by cross members and including additional members which serve as braces, including at least one brace secured to a member, the brace being provided with at least one transverse pin and the member being provided with an aperture for the reception of the pin, the brace having means captively associated therewith for releasably restraining the brace from movement in a direction longitudinally of the pin.Type: GrantFiled: May 11, 1977Date of Patent: June 20, 1978Assignee: Kwikform LimitedInventors: Raymond Ernest Steele, Andrew Charles Owens
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Patent number: 4083640Abstract: In builders scaffolding of the kind wherein cross-members are detachably connected to upright members by connecting means comprising a plurality of open-ended vertically disposed sockets on the upright member and connector means on the cross-members each comprising a pair of vertically spaced limbs adapted to embrace a selected socket member, with a wedge clamping member driven through aligned openings in the limbs of the connector member and through the socket to press the end faces of the limbs into engagement with the upright member, an improved connector member in which the two limbs are spaced apart by a distance sufficient to receive a socket therebetween with only a small clearance, at least the upper limb affording a cavity at its underside to accommodate a retaining formation which is provided on the lowermost end of the wedge clamping member so that the latter may be raised to a releasing position in which its lowermost end is clear of the space between the two limbs.Type: GrantFiled: November 15, 1976Date of Patent: April 11, 1978Assignee: Kwikform LimitedInventor: Dennis William Lovering
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Patent number: 3978634Abstract: To enable a scaffolding structure to serve horizontally curved structures such as storage tanks, a connection is provided to allow horizontally adjacent scaffold transom element to be relatively inclined to one another in a horizonal plane. The joint includes connection means including a wedge to engage a socket afforded by a scaffold upright and such connection means is pivotally mounted on a scaffold cross member, such as a transom element, which itself affords a socket for the connection of a further cross member, such as a ledger element. Alternatively, the connection means may be pivotally mounted on a part provided with two such sockets for the releasable connection of a transom element and a ledger element.Type: GrantFiled: July 17, 1975Date of Patent: September 7, 1976Assignee: Kwikform LimitedInventors: Roy Mack, Terence William Mayo
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Patent number: 3975106Abstract: In builders scaffolding of the kind in which cross members are connected to upright members by means of a wedge clamping member extending through apertures in opposed limbs of a C section bracket which is arranged to embrace a socket member secured to the upright member, whereby the wedge clamping member extends through the socket member and urges the limbs of the bracket into pressure engagement with the upright member, the upper limb of the bracket is formed with a depression adapted to enter the open upper end of the socket, whereby the bracket can be made more easily and cheaply than in the previous arrangement in which the upper limb was provided with external dependent lips to engage the outside of the socket member.Type: GrantFiled: May 8, 1975Date of Patent: August 17, 1976Assignee: Kwikform LimitedInventor: Raymond Ernest Steele
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Patent number: 3955644Abstract: To enable a scaffolding structure to serve vertically curved structures such as ships' hulls, a joint is provided to allow vertically adjacent scaffold uprights to be relatively inclined to one another in a vertical plane. Transom elements and staging brackets are provided with pivotally mounted means for connection to the inclined uprights so as to enable staging to be carried substantially horizontally.Type: GrantFiled: July 14, 1975Date of Patent: May 11, 1976Assignee: Kwikform LimitedInventor: Raymond Ernest Steele