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. 27, 2003
Filed:
Dec. 28, 2001
Applicant:
Inventor:
Chyi-Yiing Wu, Taipei, TW;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01C 1/502 ; G01C 1/510 ;
U.S. Cl.
CPC ...
G01C 1/502 ; G01C 1/510 ;
Abstract
A compact optical calibrating apparatus includes: a housing having a base formed on a bottom of the housing, a horizontality calibrator universally pendulously mounted in the housing, a plurality of illuminators embedded or secured in a plumb pendulously secured to the horizontality calibrator, and a switch device pivotally secured in the housing for switching on or off a power source supplied to the illuminators and for braking or releasing the pendulous movement of the plumb; whereby upon embedding of the illuminators in the plumb, the height and volume of the calibrating apparatus is decreased for obtaining a compact optical calibrating instrument.