Assembly for plumb bob and line
CA 1294124 C · Owner: Doyle, Richard A. · Inventors: Doyle, Richard A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The assembly includes the plumb bob and line a, cylindrical rotor having a cylindrical surface of rotation mounted eccentrically for eccentric rotation about an axis of rotation. The line is connected at one end to the rotor and at the other to the plumb bob. Means are provided for rotating the rotor in the two senses to pay out and retract or wind in the line. Means are provided for receiving and storing the bob within the casing. Side walls of the casing perpendicular to the axis of rotation closely confine the space radially of the axis of rotation beyond line rotor surface to confine the line to that space as it is winding in. Other features include a conical sheath to receive the point …
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 January 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 14, 2009.
- 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.