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Expired Canadian patentCanada

Violin shoulder rest

CA 1290961 C · Owner: Kun, Joseph · Inventors: Kun, Joseph

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

A violin or the like shoulder rest is disclosed wherein, the transverse inclination of the elongated base (12 61), relative to the clamping forks (15 16, 93, 102) is limited to an, angle of about 5' to about 25° to reduce the llkelihood of damaging the instrument by inadvertently impacting the bottom of the violin with the edge of the base of the shoulder rest. A preferred embodiment provides the advantage of transfer of load forces from the clamping forks (93, 102) to the base (61) through bearing caps (89, 100) rather than by way of pivot pins (87 88, 98, 99), to allow substantial reduction in size of the pivot pins. In a particularly preferred embodiment rectangular blocks, (82, 95) are …

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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 October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 26, 1989
GrantedOctober 22, 1991
Term endedOctober 22, 2008
Patent numberCA 1290961 C
Classification (IPC)G10D3/18 +1 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedSep 26, 1989Patent grantedOct 22, 1991Term endedOct 22, 2008

Sources & verification

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