Personal lift device

Details Personal lift device Personal lift device

2007-07-10

2007-07-10

Morano, S. Joseph (Department: 3617)

Railways

Traction

Cable

Reexamination Certificate

active

10502815

ABSTRACT:
A personal lift device is disclosed having a motor having an output shaft. A gearing system is operatively connected to the output shaft for increasing torque. A strap for suspending a weight is wound onto a spool and rotating the spool extends and retracts the strap. A drive connection is made between the gearing system and the spool to permit said motor to drive said spool. A brake is associated with said spool to prevent unwanted extension of said strap from said spool, when a weight is suspended by said strap. In a preferred embodiment a clutch is provided between the brake and the drive train, and the greater the weight supported by the spool the greater the braking force. An emergency lift and lower device is also provided in the event of a failure of the motor.

REFERENCES:
patent: 1536766 (1925-05-01), Cammann
patent: 2272778 (1942-02-01), Reuter
patent: 3123224 (1964-03-01), Kral
patent: 3351959 (1967-11-01), Turpin
patent: 3569809 (1971-03-01), Comer
patent: 3629880 (1971-12-01), Van Rhyn
patent: 4117561 (1978-10-01), Zamotin
patent: 4138077 (1979-02-01), Okumura
patent: 4202064 (1980-05-01), Joergensen
patent: 4425674 (1984-01-01), Werner
patent: 4633538 (1987-01-01), James
patent: 4944056 (1990-07-01), Schroeder et al.
patent: 5038425 (1991-08-01), Merry
patent: 5072840 (1991-12-01), Asakawa et al.
patent: 5165123 (1992-11-01), Colpron
patent: 5327592 (1994-07-01), Stump
patent: 5553335 (1996-09-01), Lahtinen
patent: 5588932 (1996-12-01), Lindblad
patent: 5694654 (1997-12-01), Roy
patent: 5809591 (1998-09-01), Capaldi et al.
patent: 2217421 (1999-04-01), None
patent: 3432043 (1986-03-01), None
patent: 3442138 (1986-05-01), None
patent: 3516714 (1986-11-01), None
patent: 2201449 (1988-09-01), None
patent: 7812239 (1980-05-01), None
patent: 0026133 (2000-05-01), None

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