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:
Dec. 13, 1977
Filed:
Aug. 09, 1976
Norris Industries, Inc., South Gate, CA (US);
Abstract
A door latch makes use of moldable material for most of the individual parts with opposite roses adapted to interlock with each other and be held together with a single screw on the axial center line of the knobs and accessible from the outside. Prior to installation of the latch on the door each knob is subassembled with the corresponding rose by employment of an arcuate shoulder on an inner central portion of the knob which is rotated to a position of engagement with a complementary arcuate shoulder in the rose. Rotation inhibiting detents prevent accidental disassembly until the spindle is mounted in place and the spindle then locks the knob against disassembly as long as the latch remains mounted on the door.