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Expired Canadian patentCanada

Start mark preventer for looms

CA 1135596 A · Owner: Rockwell International Corporation · Inventors: Brown, Ralph H.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

Abstract of the Disclosure An improved start mark preventer for looms formed by a manually operable device including a double armed lever having a control handle mounted on one arm and a control pawl on the other arm. The control pawl is disposed in operative engagement with the loom's ratchet wheel which rotates its take-up roll by means of a feed pawl and hold-back pawl. The device includes a guide for the control handle with selectively positionable stop members that provide a neutral, first and second positions for the handle. Movement of the handle to the first position moves the fell forwardly of the reed's beat-up position in, the second position the fell is permitted to return to …

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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 November 16, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 16, 1999.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 1, 1980
GrantedNovember 16, 1982
Term endedNovember 16, 1999
Patent numberCA 1135596 A
Classification (IPC)D03D49/20

Timeline

Timeline From CIPO dates

1981198319851987198919911993199519971999Application filedOct 1, 1980Patent grantedNov 16, 1982Term endedNov 16, 1999

Sources & verification

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