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:
Sep. 03, 2002
Filed:
Dec. 20, 2000
Frank Su, Taipei, TW;
Other;
Abstract
A door lock set including: a housing fixed on a door; an upper cam rotatably mounted on an upper portion of the housing and operatively retracting an upper latch by a thumbturn knob; a lower cam rotatably mounted on a lower portion of the housing and operatively retracting a lower latch by rotating a door knob secured to a spindle of the lower cam; a linking device having an upper linking plate pivotally secured to the upper cam, a first linking rod and a second linking rod respectively upwardly pivotally secured to the upper linking plate and respectively downwardly pivotally secured to the lower cam, whereby the spindle can be rotated in a large angle for rotating the lower cam for retracting the lower latch and for synchronously biasing the upper cam for retracting the upper latch for opening the door, thereby being suitable for a door-knob type lock set; and the linking device may be optionally disposed on a right side portion of the upper cam for retracting the latch as provided on a right side of the door; or the linking device may be optionally disposed on a left side portion of the upper cam for retracting the latch as provided on a left side of the door.