Patent Yard Sign in
Expired Canadian patentCanada

Adjustable tool holder for boring bar

CA 1053035 A · Owner: Lindsay, Harold W. · Inventors: Lindsay, Harold W.

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

An adjustable tool holder for a boring bar has a first shank portion including a cutting tip keyed to a second shank portion to form a torsionally unitary cutting tool of constant exterior dimension receivable in a cylindrical bore in the boring bar. An adjusting screw is threadedly received in an axially extending bore in the first shank portion. The screw has an annular laterally enlarged head received and rotatable in an enlarged portion of the bore disposed in the second shank portion. An annular retaining bushing is press fit in a socket in the and of the second shank portion. The bushing retains the head of the adjusting screw within the enlarged portion of the axial bore, whereby …

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 April 24, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 24, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedApril 24, 1979
Term endedApril 24, 1996
Patent numberCA 1053035 A
Classification (IPC)B23B29/02 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedApril 24, 1979Term endedApril 24, 1996

Sources & verification

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