US3701502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ejection seat and mechanism therefor
Assignee: Individual
•
Filing: 1971-03-19
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Granted: 1972-10-31
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Expires: 1991-03-19
Abstract
Abstract The invention concerns initiator mechanism for ejection seats (and seats provided therewith) such initiator mechanisms being provided for a rocket motor provided on an ejection seat pan which is movable with respect to a seat frame, the initiator being provided on the frame and comprising a pressure fluid source which when initiated in response to withdrawal of a static line stored in a housing on the frame, releases pressure fluid which is transmitted by conduit means to a rocket motor firing pin remote from the source.
Inventors
- 👤 James Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:50
CPC Classifications
B; B64; B64D; B64D25/00; B64D25/08; B64D25/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
226 words
For an ejection seat comprising a seat frame, and a seat pan, an ejection gun coupled to the seat frame, and a rocket motor; an initiator mechanism for said rocket motor, such mechanism comprising; a pressure fluid operating firing pin adapted to be connected to a rocket motor initiator on the seat pan; conduit means for carrying pressure fluid to such pressure fluid operated firing pin; a pressure fluid source coupled to said conduit means; mechanical means for initiating said source; said mechanical means comprising: a lever mounted on the ejection seat frame; a static line; such lever being movable in response to withdrawal of the static line coupled thereto, such static line being stored in a coiled condition (as herein defined); a portion remote from the lever coupled to a portion of the vehicle in which the seat is positioned; the arrangement being such that on ejection of the seat from the vehicle under the influence of the standard ejection gun provided on the seat frame the cOiled portion of the static line is progressively unwound and once taut the line results in movement of said lever which in turn causes release of pressure fluid from said source and thus the introduction of pressure fluid into the conduit means with the result that the rocket motor firing pin is operated to ignite the rocket motor.
Claim 2
Dependent Claim
226 words
For an ejection seat comprising a seat frame, and a seat pan, an ejection gun coupled to the seat frame, and a rocket motor; an initiator mechanism for said rocket motor, such mechanism comprising; a pressure fluid operating firing pin adapted to be connected to a rocket motor initiator on the seat pan; conduit means for carrying pressure fluid to such pressure fluid operated firing pin; a pressure fluid source coupled to said conduit means; mechanical means for initiating said source; said mechanical means comprising: a lever mounted on the ejection seat frame; a static line; such lever being movable in response to withdrawal of the static line coupled thereto, such static line being stored in a coiled condition (as herein defined); a portion remote from the lever coupled to a portion of the vehicle in which the seat is positioned; the arrangement being such that on ejection of the seat from the vehicle under the influence of the standard ejection gun provided on the seat frame the cOiled portion of the static line is progressively unwound and once taut the line results in movement of said lever which in turn causes release of pressure fluid from said source and thus the introduction of pressure fluid into the conduit means with the result that the rocket motor firing pin is operated to ignite the rocket motor.
Claim 3
Dependent Claim
62 words
A mechanism according to claim 1, wherein a housing in which said lever is mounted, such housing having hollow portion in which the coiled (as herein defined) portion of static line is stored, this housing thus constituting a dispenser for the static line as and when ejection of the seat occurs initially as a result of actuation of the standard ejection gun.
Claim 4
Dependent Claim
57 words
A mechanism according to claim 1, wherein said lever is mounted for arcuate movement under the influence of the static line (when the latter becomes taut) which is positively coupled thereto, and a sear; a spring biassed firing pin located in a housing containing the pressure fluid source; such lever being operatively connected to said firing pin.
Claim 5
Dependent Claim
80 words
A mechanism according to claim 1, wherein an arcuately movable slotted hollow arm; and a member passing through the slots in the arm, together constitute said lever; spring means located in the hollow arm which urge the member in a direction away from the pivot point of the arm; a locking detent; said member in conjunction with the spring means urging the locking detent into a lever locking condition, and the said member being positively coupled to said static line.
Claim 6
Dependent Claim
14 words
A mechanism according to claim 1, wherein a gas generating cartridge constitutes said source.
Claim 7
Dependent Claim
22 words
A mechanism according to claim 1, wherein releasable connector means are provided releasably to connect said pressure fluid source to the conduit.
Claim 8
Dependent Claim
42 words
A mechanism according to claim 1, wherein a pin extending from a slidable piston constitutes said pressure fluid operated firing pin said piston being housed in a cylinder constituted by a housing secured to a propellant housing canister of a rocket motor.
Claim 9
Dependent Claim
29 words
A mechanism according to claim 7, wherein a frangible pin locks said piston and pin against movement until pressure fluid at a pressure above a predetermined value acts thereupon.
Claim 10
Dependent Claim
212 words
For an ejection seat comprising a seat frame, and a seat pan, an ejection gum coupled to the seat frame, and a rocket motor; an initiator mechanism for said rocket motor, such mechanism comprising: a pressure fluid operated firing pin comprising a pin and a piston carrying said pin, said pin being adapted to be connected via a cylinder housing to a rocket motor initiator on the seat pan; a conduit for carrying pressure fluid to said piston; a pressure fluid source comprising a housing and a ballistic cartridge located in the housing, such housing communicating with said conduit; a cartridge firing mechanism comprising a spring biassed firing pin; a lever constituted by an arcuately movable slotted hollow arm and a member passing through the slots in said arm; a sear for effecting movement of said spring biassed firing pin, such sear being coupled to said member; a static line coupled to said lever; spring means located in the hollow arm; a locking detent urged by said member under the influence of said spring means towards a lever locking position; pivotal connection means for pivotally connecting the arm to a housing on the seat frame; and a cavity housing a portion of said static line in a coiled (as herein defined) condition.
Claim 11
Dependent Claim
212 words
For an ejection seat comprising a seat frame, and a seat pan, an ejection gum coupled to the seat frame, and a rocket motor; an initiator mechanism for said rocket motor, such mechanism comprising: a pressure fluid operated firing pin comprising a pin and a piston carrying said pin, said pin being adapted to be connected via a cylinder housing to a rocket motor initiator on the seat pan; a conduit for carrying pressure fluid to said piston; a pressure fluid source comprising a housing and a ballistic cartridge located in the housing, such housing communicating with said conduit; a cartridge firing mechanism comprising a spring biassed firing pin; a lever constituted by an arcuately movable slotted hollow arm and a member passing through the slots in said arm; a sear for effecting movement of said spring biassed firing pin, such sear being coupled to said member; a static line coupled to said lever; spring means located in the hollow arm; a locking detent urged by said member under the influence of said spring means towards a lever locking position; pivotal connection means for pivotally connecting the arm to a housing on the seat frame; and a cavity housing a portion of said static line in a coiled (as herein defined) condition.
Claim 12
Dependent Claim
42 words
An ejection seat comprising a seat frame and a seat pan in which the seat frame is coupled to a standard ejection gun and the seat is provided with a rocket motor, said seat including a mechanism in accordance with claim 1.
Claim 13
Dependent Claim
42 words
An ejection seat comprising a seat frame and a seat pan in which the seat frame is coupled to a standard ejection gun and the seat is provided with a rocket motor, said seat including a mechanism in accordance with claim 9.
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) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |