Closure fasteners – Magnetic
Patent
1996-02-20
1998-06-02
Lindsey, Rodney M.
Closure fasteners
Magnetic
E05C 1916
Patent
active
057589135
ABSTRACT:
An impact resistant electromagnetic lock includes an electromagnet mounted on a door frame, a ferromagnetic strike plate, and an impact-absorbing assembly for mounting the strike plate to the door. The impact-absorbing assembly fits largely within the door, and includes both a plunger coupled to the strike plate and a spring. When an inertial force directed to forcing the door open such as a kick is directed against the door, the plunger compresses the spring. The resilience provided by the spring allows the door a limited amount of inertia-absorbing linear movement, thus greatly decreasing the maximum force experienced by the door and correspondingly increasing the ability of the door to withstand the inertial attack.
REFERENCES:
patent: 2530628 (1950-11-01), Pivero
patent: 2693382 (1954-11-01), Teetor
patent: 2727772 (1955-12-01), Hamilton
patent: 2877041 (1959-03-01), Foley
patent: 3060786 (1962-10-01), Flower
patent: 3258285 (1966-06-01), Smith
patent: 3576119 (1971-04-01), Harris
patent: 3843174 (1974-10-01), Bogunovich et al.
patent: 4022509 (1977-05-01), Bopp et al.
patent: 4682801 (1987-07-01), Cook et al.
patent: 4720128 (1988-01-01), Logan, Jr. et al.
patent: 4915431 (1990-04-01), Bailey
patent: 5065136 (1991-11-01), Frolov et al.
patent: 5139293 (1992-08-01), Zimmerman et al.
patent: 5380053 (1995-01-01), Saino
Roth Thomas E.
Wojdan Dennis E.
Lindsey Rodney M.
Securitron Magnalock Corp.
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