Communications – electrical: acoustic wave systems and devices – Transponders – Sonobuoys and sonobuoy systems
Patent
1983-11-29
1987-03-31
Farley, Richard A.
Communications, electrical: acoustic wave systems and devices
Transponders
Sonobuoys and sonobuoy systems
441 33, B63B 2152
Patent
active
046548327
ABSTRACT:
Sonobuoy parachute shroud line ends are retained by a cup mounted in and adjacent one end of the sonobuoy outer casing. A heavy ejection spring is beneath the cup for forcibly ejecting the cup outwardly from the one end of the casing. The cup is retained in the casing against the spring force by a pair of partially overlapping elongated plates each having one end releasably inserted in a circumferential slot in the outer casing, the slots being adjacent the casing one end and diametrically opposed. The upper plate is in retentive contact near the other of its ends by a first retainer rod pivoted at one of its ends to the cup bottom surface. The first rod contacts the upper plate near the pivoted rod end and is in retentive contact near its other end with a second retainer rod pivoted at one of its ends to the cup bottom surface. The second rod contacts near its pivoted end the first rod and is in retentive contact at its other end with a one shot spring motor driven pin. The location of the points of contact between the plates, the upper plate and the first rod, the first and second rods and the pin and the second rod provide lever arms that result in a very high mechanical advantage between the retaining force of the pin on the second rod and the ejection spring force. Upon ejection, the cup, parachute, and shroud lines are ejected and other sonobuoy components are released from the outer casing.
REFERENCES:
patent: 3646505 (1972-02-01), Kirby
patent: 3825213 (1974-07-01), Saunders et al.
patent: 3921120 (1975-11-01), Widenhofer
patent: 4020514 (1977-05-01), Bourgeois
patent: 4029233 (1977-06-01), Widenhofer
patent: 4033529 (1977-07-01), Bourgeois
patent: 4247143 (1981-01-01), Putman
Briody Thomas A.
Farley Richard A.
Magnavox Government and Industrial Electronics Company
Seeger Richard T.
Streeter William J.
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