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Expired Canadian patentCanada

Automatically acting, lockable hoisting block

CA 1313529 C · Owner: Grundstrom, Mats Gorgen · Inventors: Samuelsson, Mats

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A hoisting block which is lockable and, automatically acting in relation to a hoisting member is, freely movable along the member, which extends from a load to be moved and to the block, such that the block can assume a desired position in relation to the load. The block includes at least one locking mechanism having comprising two arms which are pivotable in relation to the block and mutually independently, the hoisting member being arranged on the arms, a plunger actuable by a locking mechanism, and a seat disposed in the region of the plunger. A section of the hoisting member runs through a groove commonly formed by the plunger and seat and is lockable between the plunger and the seat by …

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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 9, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 9, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 3, 1987
GrantedFebruary 9, 1993
Term endedFebruary 9, 2010
Patent numberCA 1313529 C
Classification (IPC)B66C1/12

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedDec 3, 1987Patent grantedFeb 9, 1993Term endedFeb 9, 2010

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.