Boots – shoes – and leggings
Patent
1990-08-13
1994-03-22
Smith, Jerry
Boots, shoes, and leggings
36442407, G05B 1101, G06B 1132
Patent
active
052970191
ABSTRACT:
An improved control system for operation of a liftcrane having mechanical subsystems powered by a engine and connected thereto by a closed loop hydraulic system with one or more individual closed hydraulic loops. The liftcrane includes controls for outputting signals for operation of the mechanical subsystems and a programmable controller connected and responsive to the controls and connected to the mechanical subsystems. The programmable controller is capable of running a routine for controlling the mechanical subsystems. A first set of sensors is operable to sense the pressure in the closed loop hydraulic system at each of the mechanical subsystems in a first set of mechanical subsystems and provide an output to the programmable controller indicative of the hydraulic pressure sensed. A second set of sensors is operable to sense the position or speed of each of the mechanical subsystems in a second set of mechanical subsystems and provide an output to the programmable controller indicative of the position sensed.
REFERENCES:
patent: 3851766 (1974-12-01), Gill et al.
patent: 4178591 (1979-12-01), Geppert
patent: 4185280 (1980-01-01), Wihelm
patent: 4268013 (1981-05-01), Khan
patent: 4489551 (1984-12-01), Watanabe et al.
patent: 4510750 (1985-04-01), Izumi et al.
patent: 4514796 (1985-04-01), Saulters et al.
patent: 4532595 (1985-07-01), Wilhelm
patent: 4782662 (1988-11-01), Reeves et al.
patent: 4815614 (1989-03-01), Putkonen et al.
patent: 4945472 (1991-02-01), Hayashi et al.
patent: 4953723 (1990-09-01), Saotome et al.
patent: 4969562 (1990-11-01), Saotome
patent: 5029067 (1991-07-01), Nishida et al.
patent: 5034892 (1991-07-01), Saotome
patent: 5160056 (1992-11-01), Yoshimatsu et al.
The Liebherr "Technical Data Cable Excavator" at page 3, column 1. date Oct. 1986.
The Liebherr "Technical Description" HS 840, HS 850, HS 870. date Apr. 1985.
Smith Jerry
The Manitowoc Company Inc.
Trammell Jim
LandOfFree
Control and hydraulic system for liftcrane does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control and hydraulic system for liftcrane, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control and hydraulic system for liftcrane will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-441431