Joints and connections – Rod end to transverse side of member – Utilizing opposite sides of member
Patent
1988-08-22
1990-01-02
Kundrat, Andrew V.
Joints and connections
Rod end to transverse side of member
Utilizing opposite sides of member
403370, 403372, 248343, B25G 300
Patent
active
048909548
ABSTRACT:
A flat member (22) is attached to a lower end of a support leg (14) so that it extends horizontally from the support leg (14). An expansion clamp assembly (24) is carried by the member (22). This assembly (24) is plugged into the tubular lower end portion (26) of the support leg (14). Wing portions (58) of a nut wing washer (50) are deflected by the insertion of the assembly (24) into the tubular portion (26), and the wings (58) are biased into a tight gripping contact with the inner tubular portion (26). This secures the nut wing washer (50) and a nut (46) against rotation. Then, the member (22) is rotated, relative to the support leg (14), causing a relative endwise movement of a stud (28) carried by the member (22) into the nut (46). This movement causes cam surfaces (40, 40') on a cam ring (36) to be moved against angled wings (66, 66') of the upper and lower locking washers (44, 44'), in a direction which deflects the wings outwardly, and moves the edges (70, 70') on the wings (66, 66') into a tight metal-displacing engagement with the inner wall of the socket (26). Rotation of the member (22) is continued until the member (22) is securely fastened to the support leg (14). The lower locking washer (44') holds the assembly (24) upwardly into the tubular end portion (26) as the upper locking washers (44) are expanded. A conical brace member (80) may be provided at the upper end of the support leg (14) and is preloaded in compression.
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Barnard Delbert J.
Bellamy Glenn D.
Kundrat Andrew V.
Progressive Fastening, Inc.
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