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:
Jul. 20, 2021
Filed:
Oct. 31, 2019
Cheng-hsiung Huang, Taipei, TW;
Cheng-Hsiung Huang, Taipei, TW;
Other;
Abstract
A spirit level includes a housing having an elongated body and a level tube set and a lighting device mounted in the body of the housing. The body has a recessed accommodation chamber and two positioning grooves connected to the recessed accommodation chamber and disposed adjacent to the end portions of the level tubes of the level tube set. The lighting device includes a controller mounted in the recessed accommodation chamber and a plurality of light-emitting devices respectively mounted in the positioning grooves for illuminating the level tubes so that the user can see the level tubes. The invention simplifies the assembly of the spirit level and makes it easy to repair or replace the light-emitting devices of the lighting device without increasing the height or thickness of the spirit level.