Cylinder lock device

Locks – Operating mechanism – Key

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C070S359000, C070S494000, C070S409000

Reexamination Certificate

active

07421869

ABSTRACT:
Tumbler pins2are movably housed in a plug1. A locked/unlocked state is determined by the turning position on the moving direction center axes of the tumbler pins2. An unlocking key4to be inserted into the plug1is provided with unlocking code forming recesses3for determining the turning positions of the tumbler pins at code decision positions. The tumbler pins2are provided at their leading end portions with drive portions5, which have slope sides of conical faces gradually reduced in diameter toward the leading ends and having rotational centers offset from the moving direction center axes. The side wall faces of the unlocking code forming recesses3are formed of conical faces having rotational centers substantially aligned with those of the conical faces forming the slope sides of the drive portions5. At code decision positions, the slope sides of the drive portions5are forced to contact with the side wall faces of the unlocking code forming recesses3thereby to determine the turning positions of the tumbler pins2.

REFERENCES:
patent: 3722240 (1973-03-01), Spain et al.
patent: 4098103 (1978-07-01), Raskevicius
patent: 4103526 (1978-08-01), Surko, Jr.
patent: 4208894 (1980-06-01), Surko, Jr.
patent: 4635455 (1987-01-01), Oliver
patent: 4998426 (1991-03-01), Genakis
patent: 5123268 (1992-06-01), Eizen
patent: 5131249 (1992-07-01), Baden et al.
patent: 5289709 (1994-03-01), Field
patent: 5533369 (1996-07-01), Valdajos-Gallego
patent: 5570601 (1996-11-01), Field
patent: 5682779 (1997-11-01), Dolev
patent: 5943890 (1999-08-01), Field et al.
patent: 6257033 (2001-07-01), Ziv-Av
patent: 6490898 (2002-12-01), Mottura
patent: 6508091 (2003-01-01), Donatini
patent: 6912881 (2005-07-01), Kleinhaeni
patent: 7086259 (2006-08-01), Almoznino
patent: 7159424 (2007-01-01), Widen
patent: 2003/0037579 (2003-02-01), Wu
patent: 2006/0207304 (2006-09-01), Widen
patent: 07-030641 (1995-04-01), None
patent: 2003-129710 (2003-05-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Cylinder lock device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cylinder lock device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cylinder lock device will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3965694

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.