Apparatus and method for automatically injecting laundry treating chemicals into a commercial machine
CA 1317117 C · Owner: Hogrefe, James T. · Inventors: Hogrefe, James T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for cleaning fabrics includes a washing machine having a housing, a wash chamber hot and cold water, inlet conduits in the housing leading to the chamber and at, least one laundry chemical inlet conduit. Water flow sensing means are placed in the hot and cold water lines respectively, located outside of the housing. The flow of water generates a signal in the sensing means which then sends an electronic impulse to a control head having a program that stores and selectively activates a plurality of pumps. These pumps deliver laundry chemicals from supply containers into the wash chamber of the machine.
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 May 4, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 4, 2010.
- 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.