Quick lockable tilting hoist tackle
CA 1256471 A · Owner: Bateman, Robert J. · Inventors: Butler, David L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Applicant: Oberg Enterprises, Inc. Title: Quick Lockable Tilting Hoist Tackle ABSTRACT, Two separate sling lines have inner end portions secured to a drum mounted in a block and are wound in opposite senses around the drum. The block is adapted to be connected to a hoist and the free end portions of the sling lines are adapted to be connected to a load at spaced locations. During or after lifting the load by use of the hoist, the drum can be rotated to haul in one sling line while automatically paying out the other and thereby tilt the load. Mechanism is provided for locking and unlocking the drum relative to the block.
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 June 27, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 27, 2006.
- 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.