Apparatus for measuring blank holding force acting on pressure ring of apress
CA 2093382 C · Owner: Watanabe, Masuo · Inventors: Ono, Tsutomu; Kirii, Kazunari; Watanabe, Masuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus used for measuring a holding force expected to be applied to a pressure member of a press before the lower, and upper dies and the pressure member are installed on the press. The apparatus includes a measuring member to be placed on cushion pins of the press associated with a fluid-actuated cylinder via a cushion pad. A sensing element is disposed on the measuring member or a main slide carrying the upper die, such that the holding force produced by force applying means which includes the cylinder acts on the sensing element, when the measuring member is lowered with the sensing element by the main slide in its downward movement towards a bolster on which the lower due is …
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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 April 5, 1993 and granted December 9, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 5, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 5, 2015.
- 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.