Ammunition and explosives – Igniting devices and systems – Fuse cord
Reexamination Certificate
2005-04-19
2005-04-19
Carone, Michael J. (Department: 3641)
Ammunition and explosives
Igniting devices and systems
Fuse cord
C102S275800, C102S275900, C102S275120, C102S287000
Reexamination Certificate
active
06880465
ABSTRACT:
An initiator (14c) for a secondary explosive receptor charge is provided by forming a length of detonating cord (14) into a helical coil containing a plurality of windings with a cut-off barrier provided by, e.g., a separating rib (46) between adjacent windings. The adjacent windings may be not more than about 0.5 inch (12.7 mm) apart. The detonating cord (14) may be wound about a spindle (16) which may optionally provide the separating rib (46). The coil may be a tapered coil which may define a taper angle of e.g., from about 2 to 4 degrees. Alternatively, the coil may be a cylindrical coil, or the cord may be configured in a planar spiral. Optionally, the detonating cord in the helical coil may have a core of explosive material with a loading of less than 15 grains per foot of the cord, e.g., less than 12 grains per foot of the cord, or a loading in the range of from 8 to 12 grains per foot of the cord. The coil may consume about six inches of the cord. Conversely, the detonating cord in the spiral may have a core of explosive material with a loading of at least 2.5 grains per foot, optionally at least 15 grains per foot of the cord.
REFERENCES:
patent: 100884 (1870-03-01), Gomez
patent: 954595 (1910-04-01), Spery
patent: 960867 (1910-06-01), Fahy
patent: 3244099 (1966-04-01), Lang et al.
patent: 3276373 (1966-10-01), Lyons
patent: 3289583 (1966-12-01), Silverman
patent: 3437037 (1969-04-01), Newman
patent: 3598052 (1971-08-01), Schwartz et al.
patent: 3687074 (1972-08-01), Andrews et al.
patent: 3698316 (1972-10-01), Evans
patent: 3729060 (1973-04-01), Murray
patent: 3832949 (1974-09-01), Delgendre et al.
patent: 3886008 (1975-05-01), Cook
patent: 3908549 (1975-09-01), Turner
patent: 4111126 (1978-09-01), Thomanek
patent: 4187780 (1980-02-01), Petruccelli
patent: 4232606 (1980-11-01), Yunan
patent: 4284006 (1981-08-01), Davis
patent: 4426933 (1984-01-01), Yunan
patent: 4527482 (1985-07-01), Hynes
patent: 4615752 (1986-10-01), Miller
patent: 4667599 (1987-05-01), Brand
patent: 4714018 (1987-12-01), Löfgren
patent: 5125473 (1992-06-01), Sakamoto et al.
patent: 5192828 (1993-03-01), Austin et al.
patent: 5299500 (1994-04-01), Lindquist et al.
patent: 5614693 (1997-03-01), Welch
patent: 5714712 (1998-02-01), Ewick et al.
patent: 5780763 (1998-07-01), Schimmel et al.
patent: 5780764 (1998-07-01), Welch et al.
patent: 6006671 (1999-12-01), Yunan
patent: 2 506 449 (1982-11-01), None
Badger Farrell G.
Bahr Lyman G.
Lee Robert A.
Sutula, Jr. Daniel P.
Bergin Jame S.
Cantor & Colburn LLP
Carone Michael J.
Dyno Nobel Inc.
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