Pendulum device
CA 1061557 A · Owner: Truitt, Thomas E. · Inventors: Truitt, Thomas E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a kinetic sculpture apparatus, the lower end of a pendulum provides a scribe having a tapered tip that penetrates the surface of a bed of fine, particulate material to make an intricate pattern in the bed whose configuration is determined by the position from which the pendulum is released and the depth of penetration of the tip of the scribe. A pair of low friction point bearings define a, primary, horizontal axis of swinging movement of the pendulum and, the intricacy of the patterns is enhanced by a resilient upright, standard that sways with the directional pull of the pendulum. The elevation of the pendulum is controllable in order to set the depth of penetration of the scribe and …
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 4, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 4, 1996.
- 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.