Patent US3749017A successfully refreshed from Google Patents.
US3749017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parachute retarding tail assembly for bomb
Assignee: United States Department of the Navy
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Filing: 1971-12-07
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Granted: 1973-07-31
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Expires: 1991-12-07
Abstract
Abstract A drop bomb usable in a retarded and an unretarded mode at the option of the aircraft pilot, having tail fins and a parachute within a cannister in the tail section. The parachute may be deployed for the retarded mode by retaining at the aircraft a lanyard attached to an arming wire associated with a ball lock release mechanism which holds a spring loaded cover on the parachute cannister. For the unretarded deployment, the lanyard is not retained at the aircraft, but falls with the bomb and the ball lock mechanism is not activated.
Inventors
- 👤 C Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:43
CPC Classifications
F; F42; F42B; F42B10/00; F42B10/32; F42B10/48; F42B10/56
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
155 words
A parachute retardable drop bomb adapted to be released from a delivery aircraft comprising: a finned tail section connectable to the after end of the drop bomb; a chamber formed within said finned tail section; parachute means stowed in said chamber; a removable cover closing the after end of said chamber; a separable bulkhead forming the forward end of said chamber; an aft extending tube attached centrally to said bulkhead; a spring contained in said aft extending tube for biasing said cover away from said chamber; a ball lock mechanism connected to and releasably retaining said cover in a closed relationship with said chamber; an arming wire lanyard removably connected at one end to and securing said ball lock mechanism in a locked condition; and a connection on the delivery aircraft releasably attached to the other end of said arming wire lanyard for the controllable release thereof at the option of the delivery vehicle''s pilot.
Claim 2
Dependent Claim
155 words
A parachute retardable drop bomb adapted to be released from a delivery aircraft comprising: a finned tail section connectable to the after end of the drop bomb; a chamber formed within said finned tail section; parachute means stowed in said chamber; a removable cover closing the after end of said chamber; a separable bulkhead forming the forward end of said chamber; an aft extending tube attached centrally to said bulkhead; a spring contained in said aft extending tube for biasing said cover away from said chamber; a ball lock mechanism connected to and releasably retaining said cover in a closed relationship with said chamber; an arming wire lanyard removably connected at one end to and securing said ball lock mechanism in a locked condition; and a connection on the delivery aircraft releasably attached to the other end of said arming wire lanyard for the controllable release thereof at the option of the delivery vehicle''s pilot.
Claim 3
Dependent Claim
134 words
The parachute retardable drop bomb of claim 1 wherein said ball lock mechanism further comprises: a cylindrical plug member having a spherically shaped nose portion within said aft extending tube; a plunger axially and slidably contained within said plug member having a major diameter and a reduced diameter; a plurality of balls contained in equi-angular spaced radially bored holes biased to a position outside the diameter of said plug member when in contact with the major diameter of said plunger and to a position inside the diameter of said plug member when in contact with the reduced diameter; and a spring biasing said plunger to a position where the reduced diameter would be adjacent said balls but held in a position where the major diameter is adjacent said balls by said arming wire lanyard.
Claim 4
Dependent Claim
37 words
The parachute retardable drop bomb of claim 1 further comprising: a cannister slidably fit to and contained within the walls of said chamber and connected to said bulkhead for ready removal of the entire parachute retarding system.
Claim 5
Dependent Claim
22 words
The parachute retardable drop bomb of claim 1 further comprising: a fairing rim mounted on the outside rim of said removable cover.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |