The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 09, 1991
Filed:
Feb. 14, 1990
Applicant:
Inventor:
David M Johnson, Matlock, GB;
Assignee:
John Kelly (Lasers) Limited, Barlow, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E02F / ;
U.S. Cl.
CPC ...
172-1 ; 172-45 ; 172-2 ; 37DI / ; 36442407 ;
Abstract
A method of producing a work surface by producing a reference plane 2--2 and traversing a working tool 104 in a direction generally parallel to said reference plane. So that the required work surface can be a surface other than of flat planar form, the distance of the working tool 104 from the reference plane 2--2 is varied in accordance with instructions from a computer 120 in response to a measure of distance travelled.