Device for limiting the overloading of hoisting machines
CA 1268270 C · Owner: Hristov, Hristo H. · Inventors: Markov, Dimiter G.; Hristov, Hristo H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
DEVICE FOR LIMITING THE OVERLOADING OF HOISTING MACHINES ABSTRACT OF THE DISCLOSURE:, The device comprises a tensoresistor bridge the, one diagonal of which is connected to a supply voltage while the other diagonal is connected to an amplifier a, flip-flop and a relay, the one end of which is connected to the positive pole of a supply source and its other end - to the collector of a transistor. In parallel to the relay there is connected an opposite diode. The output of the amplifier is connected via three comparators to flip-flops constant voltage sources, transistors and an optron.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted April 24, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 24, 2007.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.