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. 04, 1993
Filed:
Nov. 19, 1991
Richard J Gruetzmacher, Menomonee Falls, WI (US);
Johnson Level & Tool Mfg. Co., Inc., Mequon, WI (US);
Abstract
A post level is defined by a pair of right-angle walls. A horizontal bubble vial is mounted in each wall, and a vertical bubble vial is mounted at the intersection of the walls. The vials are mounted in the interior of a pair of spaced protrusions formed in each wall, which define internal structure engaging and cradling an end of the vial without positively retaining the vial within the protrusion. The protrusions open onto the inner surface of the walls, and a retainer plate is positioned over the opening of the protrusions to retain the vials within the interior of the protrusions. The retainer plate is light-reflective to enhance visibility of the vial bubble.