Signals and indicators – Alarms – Elevator or hoist
Patent
1980-04-21
1982-08-24
Howell, Kyle L.
Signals and indicators
Alarms
Elevator or hoist
137 82, 137551, 212153, 116 67R, B66B 302
Patent
active
043455395
ABSTRACT:
A totally pneumatic crane warning system is disclosed capable of use in oil well environments. The crane warning system utilizes a pneumatic function generator. The pneumatic function generator includes a means for receiving a linear pneumatic signal that may be representative of a boom angle and translating that signal to a non-linear output representative of the maximum load capacity of the crane at that angle. This function is accomplished through the use of a rolling cam machined to represent the functional relationship between the boom angle and the maximum load capacity at that angle. This relationship has been found to be non-linear in nature. A pneumatic control circuit is utilized in conjunction with the rolling cam to effect the pneumatic output signal that is representative of the maximum load capacity at a given boom angle. The crane warning system is further provided with a means for comparing the maximum load signal with the actual load of the crane and actuating a pneumatic warning device when the actual weight exceeds the maximum load capacity output of the function generator.
REFERENCES:
patent: 2222551 (1940-11-01), Ziebolz
patent: 2967537 (1961-01-01), Morris
patent: 3018041 (1962-01-01), Bidwell
patent: 3239140 (1966-03-01), Armstrong
patent: 3254837 (1966-06-01), Falconer
patent: 3278925 (1966-10-01), Saunder
patent: 3491229 (1970-01-01), Mityashin
Load and Radius Indicating Systems, Brochure on "Sheave Master", issued Jan. 1975.
Corr Denis E.
Geosource Inc.
Howell Kyle L.
LandOfFree
Warning system with pneumatic function generator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Warning system with pneumatic function generator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Warning system with pneumatic function generator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1432620