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:
Aug. 19, 1980
Filed:
Jul. 17, 1978
Applicant:
Inventors:
Bruce H Chapman, Newark, CA (US);
James E Oliver, Half Moon Bay, CA (US);
Lawrence L Talarico, San Lorenzo, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B / ; G01B / ;
U.S. Cl.
CPC ...
3313 / ; 3314 / ; 33DI / ; 132-9 ;
Abstract
A hair length measuring apparatus includes a measuring roller and holding clamp operatively mounted on a handle, said holding clamp holding against said roller the hair being measured, such that as said handle is moved along the length of said hair, said roller is caused to rotate thereby. An optical switch detects the rotation of said roller, a decimal counter counts said rotating, and a display displays the state of said counter, thereby providing a continuously updated indication of the length of hair that has traveled across said roller during a given hair measuring operation.