Efficiency monitoring device
CA 1307407 C · Owner: Tew, Jerry J. · Inventors: Tew, Jerry J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An efficiency monitoring device determines the efficiency of a machine and operator where the machine is turned off and on by the operator. Efficiency is determined by first monitoring the cycle speed of a machine by means of a light source a reflective tape, and a photoelectric cell which produces a signal from which a digital computer can continuously calculate the instantaneous cycle speed. The computer maintains a continuous time base, and then plots the cycle speed as a function of time to produce an efficiency profile for the machine and operator.
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 September 15, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 15, 2009.
- 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.