Piano lift and dolly

Details Piano lift and dolly Piano lift and dolly

1993-04-05

1995-02-07

Underwood, Donald W.

Material or article handling

Load support has linear vertical movement and additional...

254 2R, 280 7911, B66F 504

Patent

active

053870743

ABSTRACT:
A piano lift and dolly has an upper H-frame that engages a piano and a lower H-frame that is supported on wheels. Four posts extend vertically upwardly from the lower H-frame and are received in downwardly extending tubes connected to the upper H-frame. A jack has its base mounted on a cross beam of the lower H-frame and its jack RAM mounted directly to a center point of the cross beam of the upper H-frame. Two beams of the upper H-frame engage the underside of the piano at different heights with respect to a floor on which the dolly is supported. As the jack is raised, the RAM raises the upper H-frame with respect to the lower one to lift a piano off of the floor. In this way, the piano is moved without the legs of the piano engaging the floor.

REFERENCES:
patent: 2463381 (1944-08-01), Hicks
patent: 2751191 (1953-07-01), Schroeder
patent: 2904308 (1959-09-01), Vergara
patent: 3524556 (1970-08-01), Miller
patent: 3829063 (1974-08-01), Holzworth
patent: 3830456 (1974-08-01), Fletcher
patent: 3851857 (1974-12-01), Notgrass
patent: 3949976 (1976-04-01), Cofer
patent: 4123038 (1978-10-01), Meyers
patent: 4331324 (1982-05-01), Andary
patent: 4475714 (1984-10-01), Heiskell et al.
patent: 4625944 (1986-12-01), Mankey et al.

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