Hedge shears
CA 2425104 A1 · Owner: Huang, Hung-Ta · Inventors: Cheng, Kun-Chia
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hedge shears has a pair of hands (10R/L) a pair of blades (20R/L), and a rotatable connector (30). Each handle (10R/L) or each blade (20R/L) has a drive slot (16, 242). The rotatable connector (30) has two connecting plates (32, 36). Each connecting plate (36 38) has an elongated hole (322, 362) defined in the connecting plate (36 38) and has an abutting plate (34, 38) adjacent to the one of the other connecting plate (32 36). A pivot hole, (342, 382) is defined in each abutting plate (34 38), and a shaft (42) passes, through the pivot holes (342 382). Two shaft hubs (46, 48) hold the shaft (42), and a pin (484) secured under each hub (48) passes through the drive slots (242). The blades …
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 April 10, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 10, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 10, 2025.
- 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.