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:
Oct. 28, 1997
Filed:
Nov. 17, 1995
George J Clark, St. Clair, MI (US);
Other;
Abstract
A depth measuring apparatus for an excavator which includes an inclination sensor assembly mounted along the pivot axis between the stick arm boom and the bucket, a depth sensor mounted along the same pivot axis as well as a laser receiver for receiving a radiation establishing a reference level mounted coaxially with the pivot axis between the stick arm boom and the bucket such that after the reference level has been established, and the laser receiver is impinged by radiation each time it passes through the reference level, thereby zeroing out the measuring apparatus, the actual depth of a trench may be measured with respect to the reference level by considering the inclination of the bucket as well as the depth displayed by the depth sensor when the bucket is lowered into the trench.