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Expired Canadian patentCanada

Two point load cell

CA 2078437 C · Owner: Wirth, Johannes · Inventors: Wirth, Johannes

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

The rod-shaped load cell consists of a guide section (1) which is, subdivided into a frame (6) and a load-bearing element (7) and two, parallel, rigid plates (8) connecting the two cited elements. Plates (8) are connected to both frame (6) and load-bearing element (7) by band-shaped flexural joints (9) which extend across the overall length of guide section (1). The load cell rests via frame (6) upon two feet (2) located outermost on rod-shaped guide section (1). The platform (5) rests upon two mounting elements (3) also located outermost on guide section (1) with the mounting elements, (3) acting on load-bearing element (7). A force sensor (4) is diagonally installed at half the length of …

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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

  • Filed June 18, 1992 and granted August 31, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 18, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 18, 2014.
  • 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 18, 1992
GrantedAugust 31, 1999
Term endedJune 18, 2012
Patent numberCA 2078437 C
Classification (IPC)G01L1/26 +2 more

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedJune 18, 1992Patent grantedAug 31, 1999Term endedJune 18, 2012

Sources & verification

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