Computing postal scale
CA 1046539 A · Owner: National Controls · Inventors: Rock, Frank C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Highly accurate and versatile computing scale which is particularly suitable for postal use. The platform of the scale is mounted on and supported by a single load cell in a system requiring no levers, pivots or other moving parts. Weight readings are averaged on a moving average basis, and in one preferred embodiment the scale has an accuracy on the order of 1/32 ounce over a range of 70 pounds. With no load on the scale, any drift is cancelled by increasing or decreasing the net weight reading in small increments during successive counting cycles to maintain an accurate zero reference. The scale includes a keyboard through which a postal clerk can enter information about the destination …
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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 January 16, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 16, 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.
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.