Joints and connections – Articulated members – Lockable at fixed position
Patent
1990-02-28
1991-10-15
Kundrat, Andrew V.
Joints and connections
Articulated members
Lockable at fixed position
403114, 403131, F16C 1106
Patent
active
050569511
ABSTRACT:
A device for connecting an arm (2) to a fastening plate (3) comprises an external casing (11) rotatably coupled to the fastening plate (3) by a pivot assembly (5). The external casing (11) is provided with a substantially cylindrical cavity having a hemispherical bottom accessible from the outside of the casing (11). The pivot (5) extends with clearance through a cylindrical cavity of a substantially spherical internal casing (21). The internal casing (21) is fastened to an extremity of the arm (2). The arm (2) extends with clearance through a clamping collar (13). The clamping collar (13) is slidably mounted in the cavity of the external casing (11) for exerting pressure against the internal casing (21) and for clamping the arm (2) in a desired variable angular position with respect to a central axis of the cavity of the external casing (11).
REFERENCES:
patent: 771457 (1904-10-01), Bullard
patent: 2503373 (1950-04-01), Browning et al.
patent: 3196463 (1965-07-01), Farneth
patent: 3441299 (1969-04-01), Pfaar
patent: 4243192 (1981-01-01), Johnson
patent: 4917446 (1990-04-01), Mariani
Ditta Mariani Enrico
Kundrat Andrew V.
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