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:
May. 08, 1979
Filed:
Dec. 23, 1977
Tibor O Edmond, Ponca City, OK (US);
Kenneth C Kestler, Ponca City, OK (US);
Continental Oil Company, Ponca City, OK (US);
Abstract
Apparatus and method for determining the tensile load on a mine roof bolt, which is indicative of the support provided by the bolt. The device comprises a hammer for striking a roof bolt to produce a sound pulse, a microphone for picking up the sound pulse, and a sound comparator having a recorded sound or sounds whereby an operator can match the induced sound pulse with a recorded sound pulse to provide an indication of the tensile load on the roof bolt. The comparator may include a range of sounds, or may incorporate a variable speed function whereby the pitch of the recorded sound may be varied until the induced sound is matched. Comparison of the induced sound with the recorded sound provides an indication of the tensile load on the roof bolt.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile