Traversing hoists – Having random condition sensor combined with an indicator or... – Hoisting stops upon load being raised to a predetermined...
Patent
1998-08-03
2000-05-30
Brahan, Thomas J.
Traversing hoists
Having random condition sensor combined with an indicator or...
Hoisting stops upon load being raised to a predetermined...
254269, B66D 154
Patent
active
060681454
ABSTRACT:
An anti-two block system for a crane having a body formed of a first plate and a second plate, a weighted member connected to the second plate of the body so as to contact a travelling member of the crane when the travelling member moves upwardly beyond a desired level, and a valve affixed to the first plate of the body. The valve is movable between a first position closing the valve and a second position opening the valve. The valve serves to pass fluid flow therethrough in response to a contact between the travelling member and the weighted member. The first plate is connected to the second plate. A spring is interactively connected between the plates so as to urge the second plate upwardly along the first plate when the travelling member contacts the weighted member. The weighted member has a weight so as to overcome the resistance of the spring such that the valve resides in the first position in the absence of contact between the weighted member and the travelling member.
REFERENCES:
patent: 2006869 (1935-07-01), Neuman
patent: 3922789 (1975-12-01), Sarrell
patent: 3924752 (1975-12-01), Hoofnagle
patent: 3936622 (1976-02-01), McElroy
patent: 4042213 (1977-08-01), Schreyer et al.
patent: 4067447 (1978-01-01), Goss et al.
patent: 4170308 (1979-10-01), Rogers
patent: 4219121 (1980-08-01), McPeak
patent: 4280628 (1981-07-01), Goss et al.
patent: 4300134 (1981-11-01), Paciorek
patent: 4424909 (1984-01-01), Bergeron
patent: 4523686 (1985-06-01), Moore et al.
patent: 5263660 (1993-11-01), Brozik
Brahan Thomas J.
MSI Crane & Equipment Co.
LandOfFree
Anti-two block system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Anti-two block system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anti-two block system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1904389