Rollercoaster launch system

Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum

Reexamination Certificate

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Details

C254S361000, C104S055000, C104S063000, C060S371000

Reexamination Certificate

active

10966802

ABSTRACT:
A winch system, typically used in a roller coaster system, includes a hydraulic pump, a variable speed motor connected to the hydraulic pump, a first pipe connected to the hydraulic pump; a second pipe connected to the hydraulic pump comprising a second pressurized fluid; an accumulator system connected the pipes; a motor connected to the accumulator system; and a winch drum connected to the motor.

REFERENCES:
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patent: 4047311 (1977-09-01), Kelley
patent: 4187681 (1980-02-01), Johnson
patent: 4191016 (1980-03-01), Roth
patent: 4223871 (1980-09-01), Braithwaite
patent: 4240613 (1980-12-01), Braithwaite
patent: 4703835 (1987-11-01), Negrutsky
patent: 6371447 (2002-04-01), Imanishi et al.
patent: 6439129 (2002-08-01), Begotti
patent: 6644629 (2003-11-01), Higashi et al.
patent: 6648303 (2003-11-01), Nishimoto et al.
patent: 6679182 (2004-01-01), Spieldiener
patent: WO 02/14199 (2002-02-01), None

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