Title:
【発明の名称】マルチスピードウィンチ
Document Type and Number:
Japanese Patent JP2001511102
Kind Code:
A
Abstract:
A multi-speed winch (70, 80) is attached to a motor vehicle (200) and is hydraulically powered by the vehicle's power steering system (12) or other hydraulic source innate to the host vehicle (200). The winch operates in either a low-speed, high-torque mode for moving heavy loads, a high-speed, low-torque mode for quickly releasing or retrieving cable (82), a free-spooling mode for manually releasing cable (82), and a brake mode for holding the cable and load at a fixed position. The high-speed mode is enabled by coupling the drive shaft (75) directly to the winch drum (80). The low-speed mode is enabled by coupling the drive shaft (75) to the winch drum (80) through a planetary gear assembly (83a-c, 84). In an alternate embodiment, high-speed mode is enabled by coupling the drive shaft (248) to the winch drum (250) through one of two planetary gear assemblies. Free-spooling mode is achieved by disengaging the drive shaft (248) from the winch drum (250), and brake mode is achieved by engaging both the direct drive coupling (120) and the sun and planet gear arrangement (83a-c, 84). The four operational modes are selected by four different combinations of positions of a direct drive selector handle (134) (which determines the position of the coupling plate) and a gear reduction handle (8) (which determines the position of the locking pin). In an alternative embodiment, the four operational modes are selected by four different combinations of positions of a direct drive solenoid (140) and a gear reduction solenoid (148). A four-way, dual solenoid-operated valve (20) controls the flow of pressurized hydraulic fluid to the winch motor (70).
Inventors:
Aho, Richard Yee
Application Number:
JP53287598A
Publication Date:
August 07, 2001
Filing Date:
December 16, 1997
Export Citation:
Assignee:
Mile Marker Incorporated
International Classes:
B66D1/08; B66D1/22; B66D1/24; B66D1/44; C03B19/10; C03B32/00; C03C1/02; (IPC1-7): B66D1/08; B66D1/24; B66D1/44
Attorney, Agent or Firm:
Kazuo Shamoto (5 outside)