Method of transporting objects by helicopter and grapple adapted therefor
CA 1266285 C · Owner: Coulson, Wayne C.S. · Inventors: Jarman, Philip S.; Coulson, Wayne C.S.; Collinge, Gary E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Coulson 1, METHOD OF TRANSPORTING OBJECTS BY HELICOPTER AND GRAPPLE ADAPTED THEREFOR, ABSTRACT OF THE DISCLOSURE A method of transporting an elongated object with a grapple includes placing the object in a generally horizontal position on a surface. The grapple is opened and placed about the object. The grapple is then closed about the object with a force sufficient to hold the arms of the grapple against the object, but insufficient to squeeze the object tightly between the arms. The grapple is raised with the object, and the object is allowed to swing between the arms of the grapple to a generally vertical position. The grapple may include two arms having pivotally interconnected inner …
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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 February 27, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 27, 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.