Grand piano action cradle

Details Grand piano action cradle Grand piano action cradle

1986-10-14

1988-05-10

Mitchell, David M.

Land vehicles

Wheeled

Extensible

280 4734, 280 791A, 2481884, B62B 302

Patent

active

047430397

ABSTRACT:
The invention comprises a pair of horizontal runners held above a foldable X-frame dolly by means of adjustable vertical supports to provide placement of the tops of the runners at the exact height of the action bed of a grand piano to allow the piano's action to be drawn directly out upon the runners, supported by the assembly, and moved about for servicing without the need of ever lifting the action, and to be re-installed in the piano in the same manner.

REFERENCES:
patent: 189531 (1877-04-01), Voorhees
patent: 612523 (1898-10-01), Martin
patent: 1581352 (1926-04-01), Kuen
patent: 1918604 (1933-07-01), Johnson
patent: 2161578 (1939-06-01), Johnson
patent: 2534367 (1950-12-01), Perrotta et al.
patent: 3222030 (1965-12-01), Thorpe
patent: 3637232 (1972-01-01), Bourgraf et al.
patent: 4165088 (1979-08-01), Nelson

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