Metal tools and implements – making – Blank or process – Keys
Patent
1991-02-04
1992-12-01
Parker, Roscoe V.
Metal tools and implements, making
Blank or process
Keys
409130, B21K 1300
Patent
active
051671719
ABSTRACT:
A universal key blank incorporates special geometry enabling it to be used as a blank for duplicating a variety of related but geometrically dissimilar keys. The universal key blank functions with a lock having a lock entrance slot with opposing sides and first and second opposed key interface ribs protruding from the sides of the slot with relative vertical alignment to rib geometry configured to engage first and second grooves formed in opposing sides of the blade of the universal key blank. A novel method duplicates keys by measuring and reproducing a reference distance defined by the spacing between the bit notch pattern and the key reference surface forming the first groove of the master key.
REFERENCES:
patent: 830014 (1906-09-01), Shaw et al.
patent: 1302432 (1919-04-01), Raymond
patent: 1785634 (1930-12-01), Lawrence
patent: 1922438 (1933-08-01), Hurol
patent: 2065294 (1936-12-01), Simon
patent: 3439516 (1969-04-01), Quillen
patent: 3841175 (1974-10-01), Comtois
patent: 4102247 (1978-07-01), Fanberg
Brochure: Taylor Lock--Key Machines, printed by the Taylor Lock Company re Model KD8 and Model KD9 (1 page).
Brochure: ILCO borchure--printed in the ILCO Unican Corp. Catalog No. 60R (1984 Edition ) (2 pages).
Brochure: SILCA brochure--printed in the SILCA Catalogo Cenerale n. 21 (Italian) (5 pages).
Brochure: Cole brochure--printed in the COLE key training manual re key duplicating (5 pages).
Axxess Entry Technologies
Parker Roscoe V.
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