Locks – Special application – For control and machine elements
Patent
1993-03-11
1996-01-09
Cuomo, Peter M.
Locks
Special application
For control and machine elements
70451, 70452, 292347, 292357, 2922363, E05B 1310
Patent
active
054818907
ABSTRACT:
A field conversion means to convert a knob-handle cylindrical lockset either with or without a key cylinder, installed in a door, to a lever-handle cylindrical lockset without changing any existing original key cylinder. The conversion means comprises an inside and an outside means, each including a lever-handle, a drive cartridge adaptor cylinder and a rosette or escutcheon containing a helical spring and a positive stop disk. The spring is biased to oppose droop of said lever-handle from a normal horizontal position and to oppose downward operating force, applied to said lever-handle and is increasingly biased when the lever is operated to oppose downward rotation of the lever. Stop means are provided in the rosette or escutcheon to limit the angular rotational travel of said lever-handle. Differently sized adapters are provided to permit the conversion of different sized cylindrical locks. The conversion means is applicable to all grades of cylindrical locksets for all functions, including those with key cylinders and interchangeable core cylinders, and all types of high security cylinder constructions. It can also be used with a knob rose assembly.
REFERENCES:
patent: 2947561 (1960-08-01), Holden
patent: 4236396 (1980-12-01), Surko et al.
patent: 4502719 (1985-03-01), Perry
patent: 4569547 (1986-02-01), Fayerman et al.
patent: 4604879 (1986-08-01), Nary et al.
patent: 4784418 (1988-11-01), Pearson et al.
patent: 4876783 (1989-10-01), Campion et al.
patent: 4921289 (1990-05-01), Shen
patent: 5177987 (1993-01-01), Shen
patent: 5265924 (1993-11-01), Kim
patent: 5286074 (1994-02-01), Lin
Cuomo Peter M.
Dino Suzanne L.
Maleson Paul
LandOfFree
Cylindrical lockset knob to lever conversion assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cylindrical lockset knob to lever conversion assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cylindrical lockset knob to lever conversion assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1295877