Hydraulic driven worm gear tilting device for implements attached to an articulated arm
CA 2132640 C · Owner: Smp Parts Ab · Inventors: Holscher, Billy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coupling device for connection between the operating arm (2, 3) of an excavator and an implement (1) comprises upper and lower support parts (7, 8) and a tilting device (9) having a hinge (41) with a tilt central axis (10) and a transmission gear arranged at the upper and lower support parts (7, 8) for tilting of the implement (1) and the lower support part (8). According to the invention the gear consists of a worm gear which has a segment of a worm wheel (35) which is rigidly connected to the upper support part (7) and has its centre coinciding with the tilt central axis and a gear screw (37) rotatably journalled at the lower support part (8) to be rotated by a reversible hydraulic …
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 March 30, 1993 and granted July 14, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 30, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 30, 2015.
- 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.