Braille and Arabic memory key and lock

Details Braille and Arabic memory key and lock Braille and Arabic memory key and lock

1997-11-06

1999-12-14

Boucher, Darnell M.

Locks

Parts, attachments, accessories and adjuncts

For key-operated mechanism

434113, 40634, 70408, 70438, E05B 1924

Patent

active

060002581

ABSTRACT:
A key 10 and lock 20 are disclosed for use and can be identified by knocking-out area 17 or breaking of tab 14 for identification of what numbered, lettered or Braille key goes with what lock.

REFERENCES:
patent: 1692686 (1928-11-01), Nichols
patent: 1816642 (1931-07-01), Fetter
patent: 1892995 (1933-01-01), Nicholson
patent: 1979960 (1934-11-01), Coughlin
patent: 2065468 (1936-12-01), Keil
patent: 3536017 (1970-10-01), Lucas
patent: 5339664 (1994-08-01), Mellor
patent: 5522243 (1996-06-01), Kusmiss
patent: 5664446 (1997-09-01), Kusmiss
patent: 5753350 (1998-05-01), Bright
Popular Science p. 205, Jan. 1948.
Popular Science p. 128, Jul. 1943.

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