Patent Yard Sign in
Expired Canadian patentCanada

Releasable chain keeper

CA 1324593 C · Owner: Christensen, Kean · Inventors: Christensen, Kean

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

A keeper is disclosed for releasable attachment to a chain in order to support a gathered length of the chain at a safe yet accessible, overhead location above the ground surface. The keeper includes a tubular body which can be used to accumulate a length of chain. A finger at an upward, open end of the body may be releasably hooked between openings of adjacent links of the chain in order to suspend the keeper and the accumulated chain length at the selected elevation. The finger is preferably resilient or, alternatively pivotal to facilitate, disengagement of the keeper from the chain by simply pulling downwardly on the keeper handle. The keeper may be completely removed from the chain by …

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 November 23, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 23, 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.
FiledJune 6, 1989
GrantedNovember 23, 1993
Term endedNovember 23, 2010
Patent numberCA 1324593 C
Classification (IPC)B65D85/00 +1 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedJune 6, 1989Patent grantedNov 23, 1993Term endedNov 23, 2010

Sources & verification

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