Ball attachment
CA 1104601 A · Owner: St. Marys Christian Education & Missionary Society, Inc. · Inventors: Western, Peter C.; Ringwaldt, Rodney
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Improved ball attachment means for attaching a ball to one end of a tether line, the line passing through one aperture in the wall of the ball and is attached to an insert member which is press-fitted through a further aperture, the apertures being oppositely aligned. The insert member is provided with an enlarged head which has an abutment surface abutting the external ball surface surrounding the aperture in which the insert member is located. The other end of the line is arraged to be slidably attached to a spiral member supported on top of an upright standard.
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 July 7, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 1998.
- 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.