CA1074761A - Ejector seats - Google Patents
Ejector seatsInfo
- Publication number
- CA1074761A CA1074761A CA266,508A CA266508A CA1074761A CA 1074761 A CA1074761 A CA 1074761A CA 266508 A CA266508 A CA 266508A CA 1074761 A CA1074761 A CA 1074761A
- Authority
- CA
- Canada
- Prior art keywords
- net
- arm
- seat
- restraint apparatus
- nets
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000003068 static effect Effects 0.000 claims abstract description 26
- 238000005266 casting Methods 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 5
- 230000000452 restraining effect Effects 0.000 abstract description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 210000003127 knee Anatomy 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 210000000245 forearm Anatomy 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000002414 leg Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D25/00—Emergency apparatus or devices, not otherwise provided for
- B64D25/02—Supports or holding means for living bodies
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Seats For Vehicles (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
ABSTRACT
A seat mounted arm restraint net system for restraining a crewman's arms during an ejection sequence, two nets being mounted one each side of the seat and deployable by a static line passing through a snubber box to a frangible anchorage on the vehicle floor. In order to ensure that the nets encompass the elbows, which may be protruding after operation of a seat pan mounted ejection handle, each static line is releasable attached to a swinging arm attached one to each side of the seat, the arrangement being such that the arms throw the free net sides laterally outwards and then release the nets to close over the crewman's arms.
A seat mounted arm restraint net system for restraining a crewman's arms during an ejection sequence, two nets being mounted one each side of the seat and deployable by a static line passing through a snubber box to a frangible anchorage on the vehicle floor. In order to ensure that the nets encompass the elbows, which may be protruding after operation of a seat pan mounted ejection handle, each static line is releasable attached to a swinging arm attached one to each side of the seat, the arrangement being such that the arms throw the free net sides laterally outwards and then release the nets to close over the crewman's arms.
Description
~L07~t7~;~
The present invention relate~ to ejec~or systems for ejec~ing personnel from cockpits of vehicles and craft such as aircra~t. It is concerned with means for restraining the arms of ~he user durin~ the ejection sequen~e so as to prevent injury thereto due to sudden exposure to the air while travelling at high speeds.
Various arm restraining systems are known which employ cords or tapes to reel in and restrain the arms during ejec~ion from an aircraf~0 These form part of or have to be fitted to the wearer's clothing and have to be connected to and disconnected from the aircraft and/or seat an entry and normal egress~3 from the aircraft, thus adding to the number of operations which have to be performed before the aircraft can take off. It has also been suggested that on seats where the ejector handle is sited on the arm rests~ automatic shackles be provided to hold the forearms to the arm rests on operation of the handle. This suggestion has been unpopular both psycho-logically and because of the difficulty of access thereby entailed to sucih manually operable devices as seat/occupant manual separation and emergency air or Oxygen supplies.
By the present invention is provided an arm restraint system which ` is seat mounted so that no connecting or disconnecting action has to be taken whenever a user occupies the seat, no prefitting or special clothing is required and which, without loss of effectiveness and safety, allows the user to operate manually operable devices when he needs to.
` According to the present invention an arm restraint apparatus for protecting the arms o a user during an ejection sequence and comprising two nets attached and normally stowed one each side of an ejector seat, and means for deploying the nets early in an ejection sequence and including net casting ~ ` means operable to cast a side of the nets laterally outwards whereby in the - course of the sequence the nets encompass the user~s elbows to prevent his arms from being deleteriously affected by e~ternal air blast.
~ According to an important feature of the inventlon the nets may be concave, that is shaped like a hammock or sling, 80 that in u~e the userls ; arms may be somewhat enveloped thereby and bc held in theinet by inertia and , , 1~7~
air pressure. Preferably the net is anchored at one side th~reof to back, and possibly also at another side thereof to arm rest, regions o~ the seat~
According to another feature o~ the invention the net deployment means may include a line attached to a free side of each net and forming part of a static line releasably attachable, perhaps by frangible means, .. . . . ~ .. . . . . .
to a fixed datum, eg the floor of the vehicle, and a snubber block through which the static line passes in a normally non-returnable manner. The nets may thus be substantially triangular and normally stowed in frangible or open8ble covers extending along the sides of the back rest portion of the .. . ... ... . ..
seat, and possibly along arm rest portions also. The upper end of each static line is advantageously anchored to a release unit associated with a seat release mechanism, both manual and automatic. The net ~an be arranged so that release of the unit is sufficient to ensure release of the arms from the nets, and mounted on a headrest structure on the seatO Alternatively the whole attachment of the net to the seat can be releasable, using loops, fairleads and a draw thread. By anchoring the upper end to the headrest structure, however the net can be arranged to support the whole arm and to restrain the userls corresponding shoulder as well. The anchorage of the static lines and the operation o~ the net casting maans are preferably arranged so that the static lines and hence the associated free sides of the nets clear the shoulders during deployment. Insofar as controls and supplies, eg on manual seat/manual release and emergency air or oxygen supply, are not mounted so that the user can operate them from the restrained configuration the snubber blocks may have a manual release. For faster deployment of the nets the static lines may pass through pulley means.
~ ccording to a further feature of the invention the net casting means may include on each side an arm pivotally attached to the seat at one end, attached by releasable attachment means at the other end to the net outer side or the static line or both, and normally stowed with the net end to the rear of the seat end, the arrangement being such that tension on the static line to deploy the net rotates laterally outwards the arms and hence the line and as90ciated net side, then at or just beyond the maximum ~ , . . .
.. , . . , ~ ' .
7~1 cas~ o~ the net, the net and the line to pull the assoc-lated nek ~ide inwards and forwards. The pivotal axis of the arm i8 pre~erably til~ed laterally inward from the vertical so that the arm is inclined upwards at the point of maximum cast of the net, and may also be ~ilted ~orwar~ of the vertical to encourage the released arm to continue to rotate forwards after release of the net.
The nets have preferably a mesh size, at least in a forward region thereof~ small enough not to permit the user's~:fingers to pass therethrough and entangle in the net. The rear and upper regions of the nets may have a larger mesh but this should r.ot be so large as to permit protrusion there-through by, and entrapment thereby of, the user's elbows. Advantageously an ejection seat provided with arm restraint nets in accordance with the invention has knee wings, one each side protruding upwards from the forward region of the seat part of the seat, and to each of which is attached a fairlead for the static line. With this arrangement the user's arms can readily be supported with the hands not far irom controls ~uch as a manual seat release control and the snubber block release controls. The snubber blocks may, of course, be most conveniently mounted on the knee wings.
.
Arm restraint systems in accordance with the invention are particu-larly suitable for use on ejector seats whereon the ejection handle is sited on the front of the seat pan between the user~s legs. As the operation of this handle terminates the user's elbows are usually laterally spread out, and the arm tension the user requires to pull the handle may not have been relaxed before the ejection has got under way. The net system can readily be arranged to encompa~s the elbows in this position and to protect them while leaving the vehicle.
~n arm restraint system in accordance with the present invention will now be described by way of example with reference to the acc~mpanying draw-ings, of which:
Eigure 1 illustrates the system in a stowed configuration, Figure 2 is a diagram of a casting arm, Figure 3 illustrate0 the system in a maximum ca~t coneiguration, and .
, ~,,~
: : : .: .: , , . . -. . ~
:. : . .
.. . .
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Figure ~ illustrates the sy~tem in a ~ully deployed con~iguration.
An ejector seat 10 illugtrated in the Figurea has a backrest portlon 11, a headres~ portion 12, seat side portions 13 and knee wings 14~ Two arm restraint nets 15 are attached to the back and side portions 11 and 13, one net at each side. Each net 15 is attached along an upper, free, edge to a static line 16 a top end of which ig anchored to a release unit 17 on the side of the headrest portion 12. Near the lower end of the ~ree edge of the net the static line 16 carries a toggle lô which in combination with a -- .,, ., .. . , .. ~ . .. . .
toggle arm 19 provides net casting means. Thereafter the static line 16 10 passes through a fairlead 20 and a snubber box 21 mounted on the knee wing ~ -14, to a shear pin unit 22 anchored to the floor of the vehicle.
Also mounted on the seat side portion are the energency oxygen supply 23 (starboard side) and the emergency manual seat separation unit 24 (port side). Each snubber box has an o~erride button 25 which interrupts the snubber action while depressed, to permit drawing back of the static line therethrough.
The toggle arm 19 is pivotally attached to the seat side portion 13 in such a manner that in stowed and outstretched positions it is inclined upwards. As shown in Figure 2 the arm 19 has a cavity 26 and slot 27 arrange-ment at its outer, free end for releasably holding t~e toggle 18. A pin 28mounted on the arm 19, in the cavity, serves as a guide for the ~otation and release of the toggle 18. The toggle comprises Jaws 29 for attachment to the static line 16, a catchment bar 30 the breadth and length of which are slightly less than those of the slot 27 and the depth of which is slightly less than the breadth of the cavity 26, and a trunk 31 connecting the jaws 29 and the bar 30. There i~ a hole in the bar 30 and trunk 31 to accommodate the pin 28 as a slide ~it. The long axis of the bar 30 is normal to that of the jaws and the static line 16. The arrangement is auch that the cavity 26 and slot 27 arrangement on the arm 19 will retain the bar 30 of the toggle 18 until the maximum la~eral flow o the arm 19 when the bar 30 is allgned with the slot 27, when tension in and configuratlon oE the atatic line 16 will cause the toggle to withdraw from the arm.
_ 4 _ ~7~7~1 The lower and upper regions of the net ~ave a mesh ~lze o~ 1 ctn and 4 cm respectively and the net ls concave in form~ It is normally stowed in tubular reinforced rubber fabric housings 32, 33 split longitudinally to permit the ne~s to be drawn out ~hereof by their free edges~ and attached to the seat back and side portions respectively. In the stowed configuration the arm 19 is in its fully rearward position, actually with the free end laterally proud of the pivotted end. The static line 16 between the toggle 18 and the fairlead 20 is also detachably attached at intervals to the seat side.
The operation of the restraint system is as follows. When the user pulls the ejection handle, the ejector seat begins to leave the floor of the vehicle~ The static lines 16 being anchored to the floor are pulled through the snubber boxes 21 and the fairleads 20 and the arm 19 thereby swung ou~wards and forward. The net 15 is thereby caused to break out of the housings 32, 33 and the free edge of the net is cast beyond the user's elbows.
At the position of maximum lateral throw of the arms 19 shown in Figure 3 and thus of maximum cast of the net the toggles 18 and hence the ststic lines 16 and the nets are released from $he arms 19 which continue their forward swing freely. The static lines then spring laterally inwards and when they are taut the shear pins of the release units 22 break. The static lines are kept taut then by the ~ction of the snubber blocks 21.
The configuration will then be that illustrated in ~igure 4, with the static lines passing over the shoulders of the user, so that the net encompasses the upper and at least most of the lower parts of the user~s arms.
If the user desires emergency oxygen he can operate a snubber release button 25 to free the starboard net and gain access to his emergency oxygen at 23.
~hen the automatic seat separation unit operates the release units 17 are opened along with other user restraining device release units, the : .
- ~L07~76~
nets cease to encompass the arms, and unimpeded seat/man separation i8 allowed. If the automatic unit fails to operate, ~he manual release unit 24 can be operated from within the port side net.
.
.~ , '.' ~,."~
.' . "' .
':
' .
,:
' ~ 6 -~s~
.
'~, :
The present invention relate~ to ejec~or systems for ejec~ing personnel from cockpits of vehicles and craft such as aircra~t. It is concerned with means for restraining the arms of ~he user durin~ the ejection sequen~e so as to prevent injury thereto due to sudden exposure to the air while travelling at high speeds.
Various arm restraining systems are known which employ cords or tapes to reel in and restrain the arms during ejec~ion from an aircraf~0 These form part of or have to be fitted to the wearer's clothing and have to be connected to and disconnected from the aircraft and/or seat an entry and normal egress~3 from the aircraft, thus adding to the number of operations which have to be performed before the aircraft can take off. It has also been suggested that on seats where the ejector handle is sited on the arm rests~ automatic shackles be provided to hold the forearms to the arm rests on operation of the handle. This suggestion has been unpopular both psycho-logically and because of the difficulty of access thereby entailed to sucih manually operable devices as seat/occupant manual separation and emergency air or Oxygen supplies.
By the present invention is provided an arm restraint system which ` is seat mounted so that no connecting or disconnecting action has to be taken whenever a user occupies the seat, no prefitting or special clothing is required and which, without loss of effectiveness and safety, allows the user to operate manually operable devices when he needs to.
` According to the present invention an arm restraint apparatus for protecting the arms o a user during an ejection sequence and comprising two nets attached and normally stowed one each side of an ejector seat, and means for deploying the nets early in an ejection sequence and including net casting ~ ` means operable to cast a side of the nets laterally outwards whereby in the - course of the sequence the nets encompass the user~s elbows to prevent his arms from being deleteriously affected by e~ternal air blast.
~ According to an important feature of the inventlon the nets may be concave, that is shaped like a hammock or sling, 80 that in u~e the userls ; arms may be somewhat enveloped thereby and bc held in theinet by inertia and , , 1~7~
air pressure. Preferably the net is anchored at one side th~reof to back, and possibly also at another side thereof to arm rest, regions o~ the seat~
According to another feature o~ the invention the net deployment means may include a line attached to a free side of each net and forming part of a static line releasably attachable, perhaps by frangible means, .. . . . ~ .. . . . . .
to a fixed datum, eg the floor of the vehicle, and a snubber block through which the static line passes in a normally non-returnable manner. The nets may thus be substantially triangular and normally stowed in frangible or open8ble covers extending along the sides of the back rest portion of the .. . ... ... . ..
seat, and possibly along arm rest portions also. The upper end of each static line is advantageously anchored to a release unit associated with a seat release mechanism, both manual and automatic. The net ~an be arranged so that release of the unit is sufficient to ensure release of the arms from the nets, and mounted on a headrest structure on the seatO Alternatively the whole attachment of the net to the seat can be releasable, using loops, fairleads and a draw thread. By anchoring the upper end to the headrest structure, however the net can be arranged to support the whole arm and to restrain the userls corresponding shoulder as well. The anchorage of the static lines and the operation o~ the net casting maans are preferably arranged so that the static lines and hence the associated free sides of the nets clear the shoulders during deployment. Insofar as controls and supplies, eg on manual seat/manual release and emergency air or oxygen supply, are not mounted so that the user can operate them from the restrained configuration the snubber blocks may have a manual release. For faster deployment of the nets the static lines may pass through pulley means.
~ ccording to a further feature of the invention the net casting means may include on each side an arm pivotally attached to the seat at one end, attached by releasable attachment means at the other end to the net outer side or the static line or both, and normally stowed with the net end to the rear of the seat end, the arrangement being such that tension on the static line to deploy the net rotates laterally outwards the arms and hence the line and as90ciated net side, then at or just beyond the maximum ~ , . . .
.. , . . , ~ ' .
7~1 cas~ o~ the net, the net and the line to pull the assoc-lated nek ~ide inwards and forwards. The pivotal axis of the arm i8 pre~erably til~ed laterally inward from the vertical so that the arm is inclined upwards at the point of maximum cast of the net, and may also be ~ilted ~orwar~ of the vertical to encourage the released arm to continue to rotate forwards after release of the net.
The nets have preferably a mesh size, at least in a forward region thereof~ small enough not to permit the user's~:fingers to pass therethrough and entangle in the net. The rear and upper regions of the nets may have a larger mesh but this should r.ot be so large as to permit protrusion there-through by, and entrapment thereby of, the user's elbows. Advantageously an ejection seat provided with arm restraint nets in accordance with the invention has knee wings, one each side protruding upwards from the forward region of the seat part of the seat, and to each of which is attached a fairlead for the static line. With this arrangement the user's arms can readily be supported with the hands not far irom controls ~uch as a manual seat release control and the snubber block release controls. The snubber blocks may, of course, be most conveniently mounted on the knee wings.
.
Arm restraint systems in accordance with the invention are particu-larly suitable for use on ejector seats whereon the ejection handle is sited on the front of the seat pan between the user~s legs. As the operation of this handle terminates the user's elbows are usually laterally spread out, and the arm tension the user requires to pull the handle may not have been relaxed before the ejection has got under way. The net system can readily be arranged to encompa~s the elbows in this position and to protect them while leaving the vehicle.
~n arm restraint system in accordance with the present invention will now be described by way of example with reference to the acc~mpanying draw-ings, of which:
Eigure 1 illustrates the system in a stowed configuration, Figure 2 is a diagram of a casting arm, Figure 3 illustrate0 the system in a maximum ca~t coneiguration, and .
, ~,,~
: : : .: .: , , . . -. . ~
:. : . .
.. . .
~()7~7~
Figure ~ illustrates the sy~tem in a ~ully deployed con~iguration.
An ejector seat 10 illugtrated in the Figurea has a backrest portlon 11, a headres~ portion 12, seat side portions 13 and knee wings 14~ Two arm restraint nets 15 are attached to the back and side portions 11 and 13, one net at each side. Each net 15 is attached along an upper, free, edge to a static line 16 a top end of which ig anchored to a release unit 17 on the side of the headrest portion 12. Near the lower end of the ~ree edge of the net the static line 16 carries a toggle lô which in combination with a -- .,, ., .. . , .. ~ . .. . .
toggle arm 19 provides net casting means. Thereafter the static line 16 10 passes through a fairlead 20 and a snubber box 21 mounted on the knee wing ~ -14, to a shear pin unit 22 anchored to the floor of the vehicle.
Also mounted on the seat side portion are the energency oxygen supply 23 (starboard side) and the emergency manual seat separation unit 24 (port side). Each snubber box has an o~erride button 25 which interrupts the snubber action while depressed, to permit drawing back of the static line therethrough.
The toggle arm 19 is pivotally attached to the seat side portion 13 in such a manner that in stowed and outstretched positions it is inclined upwards. As shown in Figure 2 the arm 19 has a cavity 26 and slot 27 arrange-ment at its outer, free end for releasably holding t~e toggle 18. A pin 28mounted on the arm 19, in the cavity, serves as a guide for the ~otation and release of the toggle 18. The toggle comprises Jaws 29 for attachment to the static line 16, a catchment bar 30 the breadth and length of which are slightly less than those of the slot 27 and the depth of which is slightly less than the breadth of the cavity 26, and a trunk 31 connecting the jaws 29 and the bar 30. There i~ a hole in the bar 30 and trunk 31 to accommodate the pin 28 as a slide ~it. The long axis of the bar 30 is normal to that of the jaws and the static line 16. The arrangement is auch that the cavity 26 and slot 27 arrangement on the arm 19 will retain the bar 30 of the toggle 18 until the maximum la~eral flow o the arm 19 when the bar 30 is allgned with the slot 27, when tension in and configuratlon oE the atatic line 16 will cause the toggle to withdraw from the arm.
_ 4 _ ~7~7~1 The lower and upper regions of the net ~ave a mesh ~lze o~ 1 ctn and 4 cm respectively and the net ls concave in form~ It is normally stowed in tubular reinforced rubber fabric housings 32, 33 split longitudinally to permit the ne~s to be drawn out ~hereof by their free edges~ and attached to the seat back and side portions respectively. In the stowed configuration the arm 19 is in its fully rearward position, actually with the free end laterally proud of the pivotted end. The static line 16 between the toggle 18 and the fairlead 20 is also detachably attached at intervals to the seat side.
The operation of the restraint system is as follows. When the user pulls the ejection handle, the ejector seat begins to leave the floor of the vehicle~ The static lines 16 being anchored to the floor are pulled through the snubber boxes 21 and the fairleads 20 and the arm 19 thereby swung ou~wards and forward. The net 15 is thereby caused to break out of the housings 32, 33 and the free edge of the net is cast beyond the user's elbows.
At the position of maximum lateral throw of the arms 19 shown in Figure 3 and thus of maximum cast of the net the toggles 18 and hence the ststic lines 16 and the nets are released from $he arms 19 which continue their forward swing freely. The static lines then spring laterally inwards and when they are taut the shear pins of the release units 22 break. The static lines are kept taut then by the ~ction of the snubber blocks 21.
The configuration will then be that illustrated in ~igure 4, with the static lines passing over the shoulders of the user, so that the net encompasses the upper and at least most of the lower parts of the user~s arms.
If the user desires emergency oxygen he can operate a snubber release button 25 to free the starboard net and gain access to his emergency oxygen at 23.
~hen the automatic seat separation unit operates the release units 17 are opened along with other user restraining device release units, the : .
- ~L07~76~
nets cease to encompass the arms, and unimpeded seat/man separation i8 allowed. If the automatic unit fails to operate, ~he manual release unit 24 can be operated from within the port side net.
.
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Claims (15)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An arm restraint apparatus for protecting the arms of a user during an ejection sequence and comprising two nets attached and normally stowed one each side of an ejector seat, and means for deploying the nets early in an ejection sequence and including net casting means operable to cast a side of the nets laterally outwards whereby in the course of the sequence the nets encompass the user's elbows to prevent his arm from being deleteriously affected by external air blast.
2. An arm restraint apparatus as claimed in claim 1, wherein the nets are concave.
3. An arm restraint apparatus as claimed in claim 1, wherein each net is anchored at one side to a back region of the seat.
4. An arm restraint apparatus as claimed in claim 1, 2 or 3, wherein each net is normally stowed in openable covers extending down a back-rest portion of the seat.
5. An arm restraint apparatus as claimed in claim 1, 2 or 3, wherein a forward portion of each net has a small mesh and a rearward portion of a large mesh.
6. An arm restraint apparatus as claimed in claim 1, wherein the net deployment means includes a static line attached to a free side of each net, and a snubber block through which the static line passes in a normally non-returnable manner.
7. An arm restraint apparatus as claimed in claim 6, wherein the static line is releasably attachable to a fixed datum whereby ejection of the seat operates the net deployment means.
8. An arm restraint apparatus as claimed in claim 7, wherein the releasable attachment is frangible.
9. An arm restraint apparatus as claimed in claim 1, 6 or 8, including an automatic release unit for releasing the user's arms from the nets at a seat/man separation stage of an ejection sequence.
10. An arm restraint apparatus as claimed in claim 8, including manual release means for slackening the nets.
11. An arm restraint apparatus as claimed in claim 10, wherein the manual release is a snubber override device.
12. An arm restraint apparatus as claimed in claim 8, wherein the net casting means includes on each side an arm pivotally attached to the seat at one end and attached to a free side of the net at the other, and normally stowed with the net holding end to the rear of the pivotal attachment to the seat, the arrangement being such that tension on the static line to deploy the net rotates outward the arm and hence the line and associated net side, and then beyond the maximum cast position of the arm and net side draws the net side forwards, inwards and taut
13. An arm restraint apparatus as claimed in claim 12, wherein each net side is releasably attached to the casting arm.
14. An arm restraint apparatus as claimed in claim 8, wherein the net casting means includes fair leads releasably attached to cockpit datum, the draw lines extending from the nets via these fairleads to the forward part of the seat and then to line tensioning means.
15. An arm restraint apparatus as claimed in claim 14, wherein the releasable fairleads form part of runners associated with slide means mounted on the said datum.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB48260/75A GB1570283A (en) | 1975-11-24 | 1975-11-24 | Ejector seats |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1074761A true CA1074761A (en) | 1980-04-01 |
Family
ID=10447951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA266,508A Expired CA1074761A (en) | 1975-11-24 | 1976-11-24 | Ejector seats |
Country Status (5)
| Country | Link |
|---|---|
| CA (1) | CA1074761A (en) |
| DE (1) | DE2653369A1 (en) |
| FR (1) | FR2332177A1 (en) |
| GB (1) | GB1570283A (en) |
| SE (1) | SE422916B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE390405B (en) * | 1976-01-28 | 1976-12-20 | Saab Scania Ab | ARM HOLDING DEVICE AT CATAPULT CHAIRS |
| US4215835A (en) * | 1978-05-24 | 1980-08-05 | Wedgwood Gordon J | Arm net system for ejection seats |
| US4359200A (en) * | 1980-10-31 | 1982-11-16 | Stencel Aero Engineering Corporation | Limb retention system for aircraft ejection seat |
| US4667902A (en) * | 1984-11-02 | 1987-05-26 | The United States Of America As Represented By The Secretary Of The Navy | Passive arm retention curtain |
| DE3564670D1 (en) * | 1984-11-22 | 1988-10-06 | Eng Patents & Equip | Improvements in or relating to aircraft ejection seats |
| US5415366A (en) * | 1994-02-28 | 1995-05-16 | Mcdonnell Douglas Corporation | Arm restraint |
| US11465761B2 (en) * | 2020-09-25 | 2022-10-11 | Ami Industries, Inc. | Neck protection system for parachute assemblies |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2829850A (en) * | 1956-11-13 | 1958-04-08 | Lockheed Aircraft Corp | Aircraft ejection seat |
| FR1214721A (en) * | 1958-02-05 | 1960-04-11 | Svenska Aeroplan Ab | Protective device for the occupant of an ejection seat |
| GB1008477A (en) * | 1963-08-16 | 1965-10-27 | Secr Aviation | Improvements in or relating to protection systems for aviators |
| US3214117A (en) * | 1964-01-07 | 1965-10-26 | Weber Aircraft Corp | Ejection seat arrangement |
-
1975
- 1975-11-24 GB GB48260/75A patent/GB1570283A/en not_active Expired
-
1976
- 1976-11-22 SE SE7613028A patent/SE422916B/en unknown
- 1976-11-24 CA CA266,508A patent/CA1074761A/en not_active Expired
- 1976-11-24 DE DE19762653369 patent/DE2653369A1/en not_active Withdrawn
- 1976-11-24 FR FR7635399A patent/FR2332177A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2332177B1 (en) | 1982-10-22 |
| SE422916B (en) | 1982-04-05 |
| SE7613028L (en) | 1977-05-25 |
| DE2653369A1 (en) | 1977-06-02 |
| GB1570283A (en) | 1980-06-25 |
| FR2332177A1 (en) | 1977-06-17 |
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| Date | Code | Title | Description |
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| MKEX | Expiry |