Machine element or mechanism – Elements – Pawls and ratchets
Patent
1994-09-16
1996-02-06
Marmor, Charles A.
Machine element or mechanism
Elements
Pawls and ratchets
74575, 414419, B65G 6523
Patent
active
054888824
ABSTRACT:
A tilter catch mechanism for a tipping device. The tipping device has a frame and a flat tiltable platform tiltably supported on the frame and for movement between a first horizontally aligned position and a second position inclined to the horizontal. An inflatable bladder device is provided for effecting a driving tilting movement of the platform between the first and second positions. The tilter catch mechanism includes a ratchet gearing device interposed between the frame and the tiltable platform, the ratchet gearing device including a toothed ratchet gear attached to either the frame or the tiltable platform and a pivotal pawl pivotally supported on the other one of the frame or tiltable platform. A spring continually urges the pawl toward the teeth on the ratchet gear. A pneumatic control is provided for controlling a flow of pressurized gas from a pressurized gas supply to and from the bladder to cause the tiltable table to be moved between the first and second positions. The pneumatic control also causes, when the tiltable table is to be moved from a tilted position back toward the horizontal, a disengagement of the pawl from the teeth on the toothed ratchet gear to thereby allow the tilted platform to be lowered to the horizontally aligned position.
REFERENCES:
patent: 2578116 (1951-12-01), White et al.
patent: 3198395 (1965-08-01), McKinney
patent: 4278386 (1981-07-01), Eranosian
patent: 4449880 (1984-05-01), Hartman
Dalman Ronald
Overway Calvin
Piccione Robert
Riemersma Keith A.
Sica Dennis M.
Battista Mary Ann
Marmor Charles A.
National Bulk Equipment, Inc.
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