Device for measuring substantially vertical, circular-cylindrical objects
CA 1293058 C · Owner: Wiklund, Rudolf · Inventors: Wiklund, Rudolf; Ericsson, Lars
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an improvement of a hypsometer, with which one measures and computes the dimensions of circular cylindrical vertical objects such as trees. In the sight of the hypsometer there is a horizontal angle device for determining the horizontal angular distance between the boundary surfaces of the object to be measured. A computing unit computes the diameter of the object at a location along its length at which the operator has aimed the instrument on the basis of said angular distance and the distance to the object and the vertical angular position when aiming at this location, as obtained from the plumbline angle sensor of the hypsometer.
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 December 10, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 10, 2008.
- 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.