Joints and connections – Articulated members – Lockable at fixed position
Patent
1991-02-12
1991-12-10
Kundrat, Andrew V.
Joints and connections
Articulated members
Lockable at fixed position
403 84, 403114, F16C 1106
Patent
active
050712799
ABSTRACT:
The present invention relates to a pivotal attachment means intended for attaching an object to a supporting surface and comprising a lower attachment part (1) which is intended to be fastened to the supporting surface and which includes an outwardly projecting part (9) configured with a central dished recess (10) and a surrounding screw thread (11), and an upper attachment part (3) including an attachment plate (4) which is intended to be fastened to the object, a spacer bolt (5) which projects out from the attachment plate, an attachment nut (6) which is placed around the spacer bolt and which is firmly screwed to the outwardly projecting part of the lower attachment part and is provided with an inwardly projecting edge (16) having a dished chamfer or bevel (17), and a spherical body (7) which is attached to the outer end of the spacer bolt and which is positioned in the space between the lower attachment part and the attachment nut. According to the invention, the dished recess (10) of the lower attachment part ( 1) is configured with wedge-shaped projections (12) against which the spherical body (7) lies, and the spherical body is manufactured from a material which is softer than the material from which the lower attachment part and the attachment nut are made.
REFERENCES:
patent: 1934223 (1933-11-01), Booth
patent: 2861501 (1958-11-01), Strelakos
patent: 4941481 (1990-07-01), Wakenknecht
Kundrat Andrew V.
Telefonaktiebolaget L M Ericsson
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