Modified lawn rake
CA 2188956 C · Owner: Stuart, Thomas I. · Inventors: Stuart, Thomas I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The rake has an elongate handle, a rake head element and a pivotal debris collection element. The rake head element has a plurality of tines and is attached to one end of elongate handle. The pivotal debris collection element is in the form of a grapple attached to and pivotable about a fulcrum axis attached to the rake head. A cord is attached to the rake head at one end and to a grip slidingly arranged on the elongate handle at the other end. A spring urges the grapple towards an open position where the grapple is pivoted away from the rake head tines. The rake uses pulleys to multiply the force which is applied to the grapple from the grip via the cord.
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
- Filed October 28, 1996 and granted May 13, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 28, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 2018.
- 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.