Supports – Stand – Plural leg
Patent
1994-08-02
1995-11-21
Braun, Leslie A.
Supports
Stand
Plural leg
248164, 74535, 188 69, 188 8277, 16321, F16M 1100
Patent
active
054679532
ABSTRACT:
A stand, in particular a stand for a musical instrument keyboard, comprises two double-T stand segments which are connected with one another so as to be swivelable out of a rest position into a working position in the manner of a pair of scissors. A locking gear mechanism is included for determining the swivel angle and, accordingly, the working height of the stand segment associated with the swivel axis of the stand segments. The locking gear mechanism has a catch member which is associated with one stand segment. The other stand segment has an associated locking member of the locking gear mechanism acting against the force of a spring. The locking gear mechanism is a directional locking gear having a locking disk with a plurality of catch notches for determining the working positions. The locking member is in the form of a catch lever which is arranged tangentially to the locking disk and engages in the catch notches in the radial direction. A ratchet member is associated with the catch lever and is supported so as to be swivelable between two stops. The catch lever is held out of engagement with the locking disk between the first and second stops via the ratchet member and is then released so as to engage in the locking disk after being moved into a first working position associated with the stop and which can be disengaged from the locking disk after occupying a final working position determined by the additional stop. In this final working position the ratchet member is dragged along by the catch lever.
REFERENCES:
patent: 1653764 (1927-12-01), Goodwin
patent: 4763865 (1988-08-01), Danner
patent: 4917341 (1990-04-01), Pirchio
patent: 4974525 (1990-12-01), Sheffield
Braun Leslie A.
King Anita M.
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