Method and apparatus for determining weight and mass
CA 1082366 A · Owner: Pitney-Bowes, Inc. · Inventors: Storace, Anthony
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and an apparatus is disclosed for measuring weighing and/or mass of an object. The object to be measured iis subjected to an input frequency signal supplied to a piezoelectric crystal. Another piezoelectric crystal supporting the object is caused to vibrate in response to the input frequency signal and the mass and/or weight of the supported object. This second vibrating piezoelectric crystal will then produce a frequency output signal whose amplitude, is a function of the mass (and/or weight) of the object being measured. The frequency of the input and the output signals are substantially the same.
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 July 22, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 22, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.