US3261261A - Separable fastener assembly - Google Patents

Separable fastener assembly Download PDF

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US3261261A
US3261261A US441407A US44140765A US3261261A US 3261261 A US3261261 A US 3261261A US 441407 A US441407 A US 441407A US 44140765 A US44140765 A US 44140765A US 3261261 A US3261261 A US 3261261A
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piston
cylinder
rod
assemblies
barrier
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Expired - Lifetime
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US441407A
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Clarence K Brown
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HISHEAR CORP
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HISHEAR CORP
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Priority to US441407A priority Critical patent/US3261261A/en
Priority to US540424A priority patent/US3331278A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00Blasting cartridges, i.e. case and explosive
    • F42B3/006Explosive bolts; Explosive actuators
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/11Tripping mechanism

Definitions

  • thruster means in such apparatus to provide positive separation of the joined assemblies.
  • -It is still another optional object of the invention to provide pin-pulling means for pin-detent fastener mechanisms.
  • Apparatus comprises a body attachable to one of a pair of assemblies to be separably joined.
  • the body has an internal cylinder, and a piston slidedly fitted in the cylinder adapted to engage the other of the assemblies.
  • 'A shear pin interconnects the piston and the body, and holds them against relative axial movement until sheared by sufiicient force applied to the piston.
  • Explosive means are provided in fluid communication with the cylinder, which is adapted to discharge gas under pressure into the cylinder to shear the shear pin and move the piston and cylinder relative to each other to disengage the assemblies.
  • the piston is attached directly to its respective assemblyso as to drive the assemblies apart when the explosive means is actuated.
  • the piston comprises a pin which makes a keying connection with its respective assembly, whereby upon actuation of the explosive means, the pin is pulled to release the assemblies.
  • FIG. 1 is a side elevation, partly in cutaway crosssection showing an embodiment of the invention is assembly-joining position
  • FIG. 2 is a cross-section taken at line 2-2 of FIG. 1;
  • FIG. 3 is a View as in FIG. 1, but with the device in separated position;
  • FIG. 4 is a side elevation, partly in cutaway crosssection, showing the preferred embodiment of the invention in assembly-joining position;
  • FIG. 5 is a cross-section taken at line 5-5 of FIG. 4;
  • FIG. 6 is a view as in FIG. 4, but with the device in separated position.
  • FIG. 7 is a fragmentary cross-section of a modification of the device of FIG. 4.
  • FIG. 1 illustrates a pin-puller type device wherein two assemblies 10, 11 are joined.
  • Bolt 12 attaches assembly 16 to body 13, and an insert 14 having a cross port 15 fits in hole 16 in the body for attaching assembly 11 to the body.
  • the body has a neck portion 17 which encloses a cylinder 18 which has an axis 19.
  • a cap 20 closes the right hand end of the cylinder.
  • a vent 21 passes through the cap.
  • a ring 22 of deformable material is held in the cylinder by the cap.
  • the material is deformable in the sense that it can be permanently deformed. Crushing is an example of such permanent deformation.
  • a suitable substance is 2S0 Aluminum. Energy dissipated in deforming the material will not be conducted to the body as a shock, and this aids in protecting surrounding assemblies from sharp forces which would otherwise be exerted by the pistons slamming against the cap.
  • a piston 23 carries an O-n'ng 24 for sealing with the cylinder.
  • the piston is axially movable in the cylinder.
  • a rod 25 forms a continuation of the piston, and passes through the body, through hole 16, and into hole 26.
  • a shear pin 27 joins the body and piston in the position illustrated by FIG. 1. It holds the body and piston against relative axial movement, and is in full bearing in the holes so as to provide an effective, reliable, and predictable safety means which will withstand loads below its design limit, and yield to free the device at the design limit.
  • a squib port 28 is in fluid communication with cylinder 18 and receives a squib 29.
  • the squib contains explosive means 30 actuable by a signal, usually an electric current applied to a bridge wire 31 in contact with the explosive inside the squib.
  • a collar 32 on the piston limits its movement to the left.
  • FIG. 4 there is shown the presently preferred embodiment of the invention used to join assemblies 50, 51 together.
  • This device includes a body 52 with external threads 53 which are adapted to be threaded into internal threads 54 in assembly 51.
  • a locknut 55 locks the assembly 51 and body 52 together.
  • a cylinder 56 extends along axis 57 into the body from first end 58 thereof.
  • the body includes a threaded squib port 59 which is in fluid communication with cylinder 56. It receives an externally threaded squib 60, which squib includes explosive means 61 such as a charge ignitable by a signal, for example an electric current passed through bridge wire 62 in contact with the charge.
  • explosive means 61 such as a charge ignitable by a signal, for example an electric current passed through bridge wire 62 in contact with the charge.
  • leads 63 may be provided for conducting electric current to the bridge wire.
  • a piston 64 is slidably fitted in the cylinder and bears an O-ring 65 for fluidly sealing with the cylinder.
  • the piston includes attachment means 66 in the form of an internally threaded opening in the end of the piston adjacent to first end 58 of the body. This is for the purpose of receiving means such as bolt 67 for attaching assembly 50 to the piston.
  • a shear pin 68 joins the piston and the body together in full bearing contact in the holes and holds them assembled in the position shown in FIG. 4. This pin holds the load, and is accurately sized relative to its inherent strength so as both to hold the design load, and to yield at the design force from the squib.
  • piston 64 is shown receiving the end of a stepped bolt 100.
  • the bolt has an enlarged shank with a diameter adapted to fit in hole 101 in assembly 102.
  • the diameter of hole 101 is greater than the diameter of the piston, so as to avoid the risk of the pistons hanging up instead of passing straight through assembly 102. This modification is useful when it is not desired to thrust assemblies 102 and 103 apart, and when it is not objectionable to free the piston from the assemblies.
  • FIGS. 13 The operation of the device of FIGS. 13 will be readily understood from the drawings. Assemblies and 11 are held together by piston 23, and they cannot be separated unless it is withdrawn. To withdraw the pin, the squib is fired, which will move the piston to the right, withdrawing it to the position shown in FIG. 3. This enables the assembly 11 and its insert 14 to fall away from the body. It will be noted that no loose piece are generated, and that all of the fastener system goes with respective assemblies. As soon as the force is sufiiciently great, the shear pin is sheared and the pin is withdrawn.
  • Ring 22 is optional and used only in the event that it is desired to minimize shock on the surrounding structure.
  • FIGS. 4-6 The operation of the device of FIGS. 4-6 is similar.
  • the devices are firmly held together by the attachments shown until the shear pin is sheared. This is accomplished by firing the squib which forces the piston to the left. This shear the shear pin and then, of great importance in this particular embodiment, it shoots the two assemblies apart by firmly expelling the piston from the cylinder. As in the device of FIGS. 13, all parts are retained to the assemblies and no loose parts are scattered around. It will also be observed that this device i reusable by replacing the shear pin and the squib.
  • the device of FIG. 7 functions like that of FIG. 4, except that the piston and the stepped bolt are fired away from the assemblies, and the assemblies are not thrust apart.
  • This invention thereby provides means for reliably joining bodies together and for separating them by the application of minimal forces which can be closely related to the strength of the simple pin to be sheared.
  • the invention provides additional advantages of pinpuller type separations and also of positive separation of the assemblies.
  • Apparatus for joining and accomplishing the separation of a pair of assemblies comprising: a body having an internal cylinder; a piston slidably fitted in said cylinder; a rod attached to the piston and extending longiverse to said cylinder, said rod being adapted to enter said port; attachment means On said body for attachment to one of said assemblies; engagement means on the other assembly adapted to enter said port to be releasably engaged by said rod, a shear pin seated in full bearing contact in and interconnecting the rod and body, and being so disposed and arranged as to hold them against relative axial movement until sheared by sufficient force applied to the piston to accomplish said shearing and cause said axial movement; and explosive means in fluid communication with the cylinder adapted to discharge gas under pressure, on the side of the piston adjacent to the end of the cylinder closer to said assemblies, thereby to push said piston and draw said rod completely free from the engagement means, the length of the cylinder being adequate to provide for sufficient rod movement to free the engagement means; a vented oap
  • said engagement means comprises an internally threaded, crossported insert adapted to be attached to its respective assembly by its threads, and to pass the rod through its cross port, the rod engaging the body on both sides of the insert prior to firing the explosive means.
  • Apparatus according to claim 1 in which the explosive means is a squib in a threaded housing and in which an internally threaded port is formed in the body to receive the housing, and to permit the squib to discharge into said body.
  • said engagement means comprises an internally threaded, cross-ported insert adapted to be attached to its respective assembly by its threads, and to pass the rod through its crossport, the rod engaging the body on both sides of the insert prior to firing the explosive means.

Description

July 19. 1966 c. K. BROWN 3,261,261
SEPARABLE FASTENER ASSEMBLY Original Filed Dec. 28. 1961 2 Sheets-Sheet 1 INVENTOR. CLARENCE K. 5
BY Ms 7 m ATT'QZ/VEYJ.
July 19. 1966 c. K. BROWN SEPARABLE FASTENER ASSEMBLY Original Filed Dec. 28, 1961 2 Sheets-Sheet 2 FIG. 6
IN VENTOR. CLA REA/CE A. BROWN A TTOR/VE'YS.
United States Patent 3,261,261 SEPARABLE FASTENER ASSEMBLY Clarence K. Brown, Long Beach, Calif., assignor to Hi- Shear Corporation, Torrance, Calif., a corporation of California Continuation of application Ser. No. 162,718, Dec. 28, 1961. This application Mar. 9, 1965, Ser. No. 441,407 Claims. (Cl. 891) involves the risk of damaging neighboring structure, be-
cause the charge must be large enough to be sure to effect the fracture, or, in theevent the charge is not large enough, there is the risk that separation might not occur.
It-is an object of this invention to provide apparatus for joining and accomplishing the separation of a pair of assemblies in which the separation can be effected by explosive means, but in which the explosive means need only overcome the resistance of a shear pin whose strength need not be as great as the main-bearing parts of the fastener, and which can be precisely determined. Then a minimal charge can be used, and risk of damaging neighboring structure, and of failure to separate, are significantly reduced.
It is an optional object of the invention to include thruster means in such apparatus to provide positive separation of the joined assemblies.
-It is still another optional object of the invention to provide pin-pulling means for pin-detent fastener mechanisms.
Apparatus according to the invention comprises a body attachable to one of a pair of assemblies to be separably joined. The body has an internal cylinder, and a piston slidedly fitted in the cylinder adapted to engage the other of the assemblies. 'A shear pin interconnects the piston and the body, and holds them against relative axial movement until sheared by sufiicient force applied to the piston. Explosive means are provided in fluid communication with the cylinder, which is adapted to discharge gas under pressure into the cylinder to shear the shear pin and move the piston and cylinder relative to each other to disengage the assemblies.
According to a preferred but optional feature of the invention, the piston is attached directly to its respective assemblyso as to drive the assemblies apart when the explosive means is actuated.
According to still another preferred but optional feature of the invention, the piston comprises a pin which makes a keying connection with its respective assembly, whereby upon actuation of the explosive means, the pin is pulled to release the assemblies.
The above and other features of this invention will be fully understood from the following detailed description and the accompanying drawings, in which:
FIG. 1 is a side elevation, partly in cutaway crosssection showing an embodiment of the invention is assembly-joining position;
FIG. 2 is a cross-section taken at line 2-2 of FIG. 1;
FIG. 3 is a View as in FIG. 1, but with the device in separated position;
FIG. 4 is a side elevation, partly in cutaway crosssection, showing the preferred embodiment of the invention in assembly-joining position;
3,261,261 Fate-med July 19, 1966 ice FIG. 5 is a cross-section taken at line 5-5 of FIG. 4;
FIG. 6 is a view as in FIG. 4, but with the device in separated position; and
FIG. 7 is a fragmentary cross-section of a modification of the device of FIG. 4.
FIG. 1 illustrates a pin-puller type device wherein two assemblies 10, 11 are joined. Bolt 12 attaches assembly 16 to body 13, and an insert 14 having a cross port 15 fits in hole 16 in the body for attaching assembly 11 to the body.
The body has a neck portion 17 which encloses a cylinder 18 which has an axis 19. A cap 20 closes the right hand end of the cylinder. A vent 21 passes through the cap.
A ring 22 of deformable material is held in the cylinder by the cap. The material is deformable in the sense that it can be permanently deformed. Crushing is an example of such permanent deformation. A suitable substance is 2S0 Aluminum. Energy dissipated in deforming the material will not be conducted to the body as a shock, and this aids in protecting surrounding assemblies from sharp forces which would otherwise be exerted by the pistons slamming against the cap.
A piston 23 carries an O-n'ng 24 for sealing with the cylinder. The piston is axially movable in the cylinder. A rod 25 forms a continuation of the piston, and passes through the body, through hole 16, and into hole 26.
A shear pin 27 joins the body and piston in the position illustrated by FIG. 1. It holds the body and piston against relative axial movement, and is in full bearing in the holes so as to provide an effective, reliable, and predictable safety means which will withstand loads below its design limit, and yield to free the device at the design limit.
A squib port 28 is in fluid communication with cylinder 18 and receives a squib 29. The squib contains explosive means 30 actuable by a signal, usually an electric current applied to a bridge wire 31 in contact with the explosive inside the squib.
A collar 32 on the piston limits its movement to the left.
In FIG. 4, there is shown the presently preferred embodiment of the invention used to join assemblies 50, 51 together. This device includes a body 52 with external threads 53 which are adapted to be threaded into internal threads 54 in assembly 51. A locknut 55 locks the assembly 51 and body 52 together.
A cylinder 56 extends along axis 57 into the body from first end 58 thereof. The body includes a threaded squib port 59 which is in fluid communication with cylinder 56. It receives an externally threaded squib 60, which squib includes explosive means 61 such as a charge ignitable by a signal, for example an electric current passed through bridge wire 62 in contact with the charge. In this squib, as in squib 29 in FIG. 1, leads 63 may be provided for conducting electric current to the bridge wire.
A piston 64 is slidably fitted in the cylinder and bears an O-ring 65 for fluidly sealing with the cylinder. The piston includes attachment means 66 in the form of an internally threaded opening in the end of the piston adjacent to first end 58 of the body. This is for the purpose of receiving means such as bolt 67 for attaching assembly 50 to the piston.
A shear pin 68 joins the piston and the body together in full bearing contact in the holes and holds them assembled in the position shown in FIG. 4. This pin holds the load, and is accurately sized relative to its inherent strength so as both to hold the design load, and to yield at the design force from the squib.
In FIG. 7, piston 64 is shown receiving the end of a stepped bolt 100. The bolt has an enlarged shank with a diameter adapted to fit in hole 101 in assembly 102.
The diameter of hole 101 is greater than the diameter of the piston, so as to avoid the risk of the pistons hanging up instead of passing straight through assembly 102. This modification is useful when it is not desired to thrust assemblies 102 and 103 apart, and when it is not objectionable to free the piston from the assemblies.
The operation of the device of FIGS. 13 will be readily understood from the drawings. Assemblies and 11 are held together by piston 23, and they cannot be separated unless it is withdrawn. To withdraw the pin, the squib is fired, which will move the piston to the right, withdrawing it to the position shown in FIG. 3. This enables the assembly 11 and its insert 14 to fall away from the body. It will be noted that no loose piece are generated, and that all of the fastener system goes with respective assemblies. As soon as the force is sufiiciently great, the shear pin is sheared and the pin is withdrawn.
When the piston reache the position shown in FIG. 3, it deforms ring 22, thereby dissipating some or all of the kinetic energy of the piston, and reducing the shock on the assembly pin which otherwise would be directly transmitted from the piston through the body.
It will be noted that this device is reusable =by unthreading the cap, replacing the ring, the squib, and the shear pin. Ring 22 is optional and used only in the event that it is desired to minimize shock on the surrounding structure.
The operation of the device of FIGS. 4-6 is similar. The devices are firmly held together by the attachments shown until the shear pin is sheared. This is accomplished by firing the squib which forces the piston to the left. This shear the shear pin and then, of great importance in this particular embodiment, it shoots the two assemblies apart by firmly expelling the piston from the cylinder. As in the device of FIGS. 13, all parts are retained to the assemblies and no loose parts are scattered around. It will also be observed that this device i reusable by replacing the shear pin and the squib.
The device of FIG. 7 functions like that of FIG. 4, except that the piston and the stepped bolt are fired away from the assemblies, and the assemblies are not thrust apart.
This invention thereby provides means for reliably joining bodies together and for separating them by the application of minimal forces which can be closely related to the strength of the simple pin to be sheared.
The invention provides additional advantages of pinpuller type separations and also of positive separation of the assemblies.
This invention is not to be limited by the embodiments shown in the drawings and described in the description which are given by way of example and not of limitation, but only in accordance with the scope of the appended claims.
I claim:
1. Apparatus for joining and accomplishing the separation of a pair of assemblies, comprising: a body having an internal cylinder; a piston slidably fitted in said cylinder; a rod attached to the piston and extending longiverse to said cylinder, said rod being adapted to enter said port; attachment means On said body for attachment to one of said assemblies; engagement means on the other assembly adapted to enter said port to be releasably engaged by said rod, a shear pin seated in full bearing contact in and interconnecting the rod and body, and being so disposed and arranged as to hold them against relative axial movement until sheared by sufficient force applied to the piston to accomplish said shearing and cause said axial movement; and explosive means in fluid communication with the cylinder adapted to discharge gas under pressure, on the side of the piston adjacent to the end of the cylinder closer to said assemblies, thereby to push said piston and draw said rod completely free from the engagement means, the length of the cylinder being adequate to provide for sufficient rod movement to free the engagement means; a vented oap enclosing the other end of the cylinder; and a barrier of permanently deformable material, the barrier material being more easily permanently deformed than the material of the cap, said barrier being held in the path of said piston so as to dissipate kinetic energy of the piston in the substantially non-resilient deformation of the material of the barrier by the piston when the explosive means is fired and the cylinder thereafter strikes the barrier.
2. Apparatus according to claim 1 in which said engagement means comprises an internally threaded, crossported insert adapted to be attached to its respective assembly by its threads, and to pass the rod through its cross port, the rod engaging the body on both sides of the insert prior to firing the explosive means.
3. Apparatus according to claim 1 in which the explosive means is a squib in a threaded housing and in which an internally threaded port is formed in the body to receive the housing, and to permit the squib to discharge into said body.
4. Apparatus according to claim 1 in which the explosive means is a squib.
5. Apparatus according to claim 4 in which said engagement means comprises an internally threaded, cross-ported insert adapted to be attached to its respective assembly by its threads, and to pass the rod through its crossport, the rod engaging the body on both sides of the insert prior to firing the explosive means.
References Cited by the Examiner UNITED STATES PATENTS 2,497,084 2/1950 Irby 89---1 2,499,379 3/1950 Garrett 891 2,732,765 1/1956 Boyd 891.5 2,873,648 2/1959 Musser et al. 89-1 2,966,200 12/1960 Fredhold 15S--9 3,024,592 3/1962 Leaman 891.5 X
BENJAMIN A. BORCHELT, Primary Examiner.
SAMUEL W. ENGLE, Examiner,

Claims (1)

1. APPARATUS FOR JOINING AND ACCOMPLISHING THE SEPARATION OF A PAIR OF ASSEMBLIES, COMPRISING: A BODY HAVING AN INTERNAL CYLINDER; A PISTON SLIDABLY FITTED IN SAID CYLINDER; A ROD ATTACHED TO THE PISTON AND EXTENDING LONGITUDINALLY THEREFROM; A PORT IN SAID BODY DISPOSED TRANSVERSE TO SAID CYLINDER, SAID ROD BEING ADAPTED TO ENTER SAID PORT; ATTACHMENT MEANS ON SAID BODY FOR ATTACHMENT TO ONE OF SAID ASSEMBLIES; ENGAGEMENT MEANS ON THE OTHER ASSEMBLY ADAPTED TO ENTER SAID PORT TO BE RELEASABLY ENGAGED BY SAID ROD, A SHEAR PIN SEATED IN FULL BEARING CONTACT IN AND INTERCONNECTING THE ROD AND BODY, AND BEING SO DISPOSED AND ARRANGED AS TO HOLD THEM AGAINST RELATIVE AXIAL MOVEMENT UNTIL SHEARED BY SUFFICIENT FORCE APPLIED TO THE PISTON TO ACCOMPLISH SAID SHEARING AND CAUSE SAID AXIAL MOVEMENT; AND EXPLOSIVE MEANS IN FLUID COMMUNICATION WITH THE CYLINDER ADAPTED TO DISCHARGE GAS UNDER PRESSURE, ON THE SIDE OF THE PISTON ADJACENT TO THE END OF THE CYLINDER CLOSER TO SAID ASSEMBLIES, THEREBY TO PUSH SAID PISTON AND DRAW SAID ROD COMPLETELY FREE FROM THE ENGAGEMENT MEANS, THE LENGTH OF THE CYLINDER BEING ADEQUATE TO PROVIDE FOR SUFFICIENT ROD MOVEMENT TO FREE THE ENGAGEMENT MEANS; A VENTED CAP ENCLOSING THE OTHER END OF THE CYLINDER; AND A BARRIER OF PERMANENTLY DEFORMABLE MATERIAL, THE BARRIER MATERIAL BEING MORE EASILY PERMANENTLY DEFORMED THAN THE MATERIAL OF THE CAP, SAID BARRIER BEING HELD IN THE PATH OF SAID PISTON SO AS TO DISSIPATE KINETIC ENERGY OF THE PISTON IN THE SUBSTANTIALLY NON-RESILIENT DEFORMATION OF THE MATERIAL OF THE BARRIER BY THE PISTON WHEN THE EXPLOSIVE MEANS IS FIRED AND THE CYLINDER THEREAFTER STRIKES THE BARRIER.
US441407A 1965-03-09 1965-03-09 Separable fastener assembly Expired - Lifetime US3261261A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3367192A (en) * 1966-02-28 1968-02-06 William L. Bryan Release mechanism
US3695116A (en) * 1970-09-30 1972-10-03 Bunker Ramo Non-explosive electrically initiated heat-ignitable actuator
US4412420A (en) * 1980-07-03 1983-11-01 Networks Electronics Corp. Explosive actuated pin puller
US4512678A (en) * 1982-06-30 1985-04-23 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Slide release mechanism
US20070240417A1 (en) * 2006-04-13 2007-10-18 Daicel Chemical Industries, Ltd. Actuator
EP1867527A1 (en) * 2006-06-14 2007-12-19 Daicel Chemical Industries, Ltd. Pyrotechnic actuator
US20080060512A1 (en) * 2006-09-08 2008-03-13 Daicel Chemical Industries, Ltd. Actuator
US10302117B2 (en) * 2012-12-21 2019-05-28 Oakland University Mechanism for rapid de-coupling of load bearing structures

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2497084A (en) * 1943-04-30 1950-02-14 James W Irby Autoballistic antenna
US2499379A (en) * 1944-12-26 1950-03-07 Garrett Emil Grenade thrower
US2732765A (en) * 1956-01-31 Squib gun
US2873648A (en) * 1953-05-07 1959-02-17 Musser C Walton Remote control fluid pressure responsive actuator
US2966200A (en) * 1959-09-04 1960-12-27 Aeroquip Corp Shock absorbent fitting
US3024592A (en) * 1960-11-09 1962-03-13 Lockheed Aircraft Corp Pin actuating device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732765A (en) * 1956-01-31 Squib gun
US2497084A (en) * 1943-04-30 1950-02-14 James W Irby Autoballistic antenna
US2499379A (en) * 1944-12-26 1950-03-07 Garrett Emil Grenade thrower
US2873648A (en) * 1953-05-07 1959-02-17 Musser C Walton Remote control fluid pressure responsive actuator
US2966200A (en) * 1959-09-04 1960-12-27 Aeroquip Corp Shock absorbent fitting
US3024592A (en) * 1960-11-09 1962-03-13 Lockheed Aircraft Corp Pin actuating device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3367192A (en) * 1966-02-28 1968-02-06 William L. Bryan Release mechanism
US3695116A (en) * 1970-09-30 1972-10-03 Bunker Ramo Non-explosive electrically initiated heat-ignitable actuator
US4412420A (en) * 1980-07-03 1983-11-01 Networks Electronics Corp. Explosive actuated pin puller
US4512678A (en) * 1982-06-30 1985-04-23 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Slide release mechanism
US20070240417A1 (en) * 2006-04-13 2007-10-18 Daicel Chemical Industries, Ltd. Actuator
EP1867527A1 (en) * 2006-06-14 2007-12-19 Daicel Chemical Industries, Ltd. Pyrotechnic actuator
US20070295232A1 (en) * 2006-06-14 2007-12-27 Daicel Chemical Industries, Ltd. Pyrotechnic actuator
US7444918B2 (en) 2006-06-14 2008-11-04 Daicel Chemical Industries, Ltd. Pyrotechnic actuator
US20080060512A1 (en) * 2006-09-08 2008-03-13 Daicel Chemical Industries, Ltd. Actuator
US7856821B2 (en) 2006-09-08 2010-12-28 Daicel Chemical Industries, Ltd. Actuator
EP1898102A3 (en) * 2006-09-08 2012-05-02 Daicel Chemical Industries, Ltd. Pyrotechnic actuator
US10302117B2 (en) * 2012-12-21 2019-05-28 Oakland University Mechanism for rapid de-coupling of load bearing structures

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