Abstract: The present invention relates to a tensioning apparatus for a safety belt component and to a method for producing such a tensioning apparatus, comprising a gas generator for generating a pressurized gas, a piston which can be driven by the pressurized gas, a traction cable which is connected to the piston and can be connected to a safety belt component to be set into tensioning motion, and a tensioner tube for receiving and guiding the piston, wherein the gas generator is located in the tensioner tube, the tensioner tube has a cut-out in the jacket thereof between the gas generator and the piston, and a cable deflection is provided, by means of which the traction cable is guided through the cut-out and out of the tensioner tube.

Abstract: The invention relates to a belt retractor (10) for a safety belt device, comprising a belt reel (20) for winding and unwinding the safety belt. According to the invention, it is provided that at least one reel end (21) of the belt reel (20) is mounted in a bearing which comprises at least two bearing sections (110, 120, 150) having different play.

Abstract: A seatbelt retractor for a seat belt device in a vehicle. The retractor including a frame and a spool. The spool is configured to be fixed to one end of a webbing which is wound around the spool. A pretensioner device configured to rotate the spool in response to an excessive acceleration of the vehicle. The pretensioner device comprises a power transmission element carried in a pretensioner tube that is driven by a piston located in the pretensioner tube. The pretensioner device includes a gas generator for driving the piston into the power transmission element. The pretensioner device includes a seal system that includes a stopper tube located in a downstream end of the pretensioner tube to create a stop location for the piston to prevent operating gas from exiting the end of the pretensioner tube.

Abstract: A severance cutter may comprise a housing and a blade may be coupled to the housing. A restraint support may be configured to translate relative to the blade. A spring may be configured to bias a support opening defined by the restraint support away from the blade.

Abstract: An injector can include an ignition device having a partition member which forms a first space to store a gunpowder and which is formed of a prescribed rigid material such that the partition member is breached based on a rise in pressure of the first space when the gunpowder is burned. The injector can also include a case including a base section fixed on a side of the ignition device. The case can be arranged in a space inside the injector main body so as to cover the ignition device. The case can define a second space with the partition member of the ignition device and encapsulate, inside the second space, a combustion product of the gunpowder. When the gunpowder burns in the ignition device and pressure inside the second space rises, a part of the case extends so as to approach a prescribed end section.

Abstract: A seatbelt pretensioning retractor assembly for use in a passenger vehicle is provided. The pretensioning assembly includes a tube in fluid communication with a gas generator and a driving element disposed therein that travels in a first direction in response to actuation of the gas generator. The driving element includes a polymer rod. A stopper is coupled to an end portion of the polymer rod. In one example, a seal member is disposed between the gas generator and the stopper. In another example, the tube has an opening that is adjacent to an exit to facilitate venting gas from the gas generator.

Abstract: A driving-in apparatus comprises a hand-held housing having an energy transmission element accommodated therein for transmitting energy to a fastening element to be driven in, and a drive device for driving the energy transmission element, wherein the drive device comprises an energy accumulator having a gas chamber which is fillable with a driving gas at a defined overpressure, wherein the overpressure is present in the gas chamber as stored driving energy prior to initiation of a driving-in operation, and wherein a piston of the energy transmission element forms a variable wall section of the gas chamber. The apparatus also includes a heating member providing thermal energy that is transferable into the driving gas enclosed in the gas chamber.

Abstract: Tensioner drive for a safety belt device that includes a gas generator, a driving wheel, and a feed tube. The tube connects the gas generator and the driving wheel. There is at least one thrust body in the feed tube. The thrust body is accelerated after triggering of the gas generator and drives the driving wheel. There is a fixing element between the thrust body and the gas generator that is supported on the inner wall of the feed tube.

Abstract: A device for injecting a fluid into a mechanical system that may undergo heating, comprising at least one body containing a thermally triggered charge generating combustion gas, ignition of the charge being able to be triggered under the action of an ignition command and/or under the effect of a heat contribution, from a heating area of the body toward the charge, a reservoir containing the fluid, means for fastening the device to the mechanical system, the fastening means adapted to put the reservoir in fluid communication with the mechanical system, and means for delivering pressurized fluid outside the reservoir through the action, directly or through intermediate means, of the combustion gases. Within the device, the fastening means comprise at least one injection sleeve provided with an outer thread coated with an anti-loosening adhesive film. The invention also relates to a mechanical system equipped with at least one such device.

Abstract: A plurality of driving force transmitting members, a piston, a spring and a gas generator are inserted into the pipe from the end of the pipe where the gas generator is mounted. The gas generator is press-fitted in the pipe while the flat faces thereof are deformed by a pair of protrusions of the pipe. Accordingly, the gas generator is temporarily held by the protrusions of the pipe. Then, one end of the pipe is firmly pressed and the gas generator is mounted in the pipe.

Abstract: An emergency starter that allows responsiveness within a few seconds, without having disadvantages associated with mass and size of a back-up hydraulic or pneumatic starter. An instantaneous gas thrust of pyrotechnic type is coupled with a positive displacement transmission generator in conjunction with automatic coupling to/uncoupling from a set that is to be started. An emergency start-up system includes at least one pyrotechnic gas generator connected to an electrical initiator itself connected to a computer, a positive displacement motor housing straight-cut gears, the pyrotechnic gas generator being coupled to the motor by an inlet in the casing. The motor includes a mechanism of connection capable of moving at one end of the drive shaft configured to couple the transmission shaft to a driven shaft of the set that is to be started via a centrifugal clutch.

Abstract: A gas generating system (24) is provided including a gas generant container (34) and an initiator (28). A gas generant composition (32) is placed within the container (34) in ignitable communication with the igniter (28). A molecular sieve (33) is positioned within the housing 17 combined within the gas generant composition (32), or external of the gas generant (32) but in reactive proximity or vapor communication therewith. A seatbelt device (150) and a vehicle occupant restraint system (180) incorporating a gas generating system as described herein are also disclosed.

Abstract: An apparatus and method for producing explosions, including a pressure-resistance container having a main explosion chamber introduced therein, further including a supply line for supplying a flowable explosible material, and a drain opening for the directed drainage of gas pressure caused by the ignition of the explosible material. The drain opening is closed directly by a closure means, preferably a plunger, which is pressed against the drain opening using a gas spring and held closed substantially up to the time of ignition. Before the actual main explosion, the closure means is moved by the igniting and the pressure force of an auxiliary explosion, thereby exposing the drain opening.

Abstract: The invention relates to a device for opening a passenger door (1) of an aircraft in case of emergency, which is fastened so it is manually pivotable on the fuselage (3) of the aircraft via a hinge and/or support arm configuration (2), an auxiliary-energy-operated emergency opening drive (4) being provided between the fuselage (3) and the passenger door (1), which automatically opens the passenger door (1) in accordance with an emergency control unit (5), the auxiliary energy for the emergency opening drive (4) being pyrotechnic energy, whose gas expanding inside an expansion chamber (6) after triggering by the emergency control unit (5) impinges the emergency opening drive (4) with pressure medium to open the passenger door (1), wherein said emergency opening drive (4) generates a rotational movement.

Abstract: A pneumatic cylinder module includes a cylinder unit, a cylinder head and a sleeve. The cylinder unit includes, a tubular main body, a plurality of angularly spaced-apart and longitudinally extending connecting ribs, and a positioning ring connected to the connecting ribs. The cylinder head is mounted to and covers the positioning ring. The sleeve is sleeved around the cylinder unit, cooperates with the cylinder head and the main body to define a combustion chamber thereamong, and is axially movable relative to the cylinder unit between closed and open positions, where the sleeve seals and allows access to the combustion chamber, respectively.

Abstract: A pretensioner for a seat belt is configured to reduce injury by preventing load applied to the passenger's chest from increasing may include a pinion connected to a cylindrical spool wound with a webbing, a cylinder receiving a rack engaged with the pinion, a micro gas generator disposed in the cylinder and rotating the pinion by moving the rack with an explosion due to an external shock, a generator cap covering the outer circumferential edge of the cylinder and preventing the micro gas generator from separating outside, and a guide blade that guides gas discharged through vent holes to the outside is formed on the outer circumferential edge of the micro gas generator.

Abstract: A triggered-stroke actuator with its piston being held stationary in an initial position prior to triggering. The piston (13) is installed in the body (12) facing propulsion means (15) and a locking arrangement (19) that includes a latch (30) and at least one flexible tongue (23) attached to the periphery of the piston and having a hook (25) engaged with an internal abutment, the latch being moved at the beginning of triggering.

Abstract: Plural door portions are formed by sectioning the gas blowing section of the gas generator with slits. In a state in which gas has been generated by the gas generator, the plural door portions part at the slits and open towards the outside of the casing body. A gas flow path section is connected to a peripheral wall section configuring an deployment space permitting opening of the door portions. The gas flow path section is provided with an upstream portion which is in communication with the deployment space and formed along a direction orthogonal to the direction of gas blowing from the gas blowing section, and an opening portion provided at the gas inflow side, which is set so as to communicate with a space which is between adjacent door portions when the door portions 56 are in a opened state.

Abstract: A pneumatic actuator includes, but is not limited to a pressurized gas source, a cylinder, and a piston which is moveable between a rest position and an extended position. Together with the cylinder, the piston borders a first working chamber which is connected with the pressurized gas source via a first inlet opening and which can be pressurized with a first portion of the pressurized gas of the pressurized gas source for moving the piston out of the rest position, and a second working chamber which is connected with the pressurized gas source via a second inlet opening for moving the piston into the rest position and which can be pressurized in a delayed manner with a second portion of the pressurized gas.

Abstract: The invention relates to an actuator with a housing (1) in which a piston (2) with a pin (3) is inserted in a longitudinally displaceable manner, and with an igniting element (4) with contact pins (5), wherein the contact pins (5) project out of the housing (1) on the connecting side (6) thereof, and, when the igniting element (4) is ignited by the propellants generated, the piston (2) is displaced in the direction of the actuating side (7) until the pin (3) projects out of the housing (1) on the actuating side (7). For production to be more cost-effective, it is proposed that the housing (1) is designed as a single part and in the form of a cylinder, and the connecting side (6) is injection moulded or bonded around the end surface (9) of the housing (1) with a cylindrical cover (10) fitting thereover.

Abstract: A pyrotechnic actuator is provided for an active hood that encompasses an installation site for a gas generator, a cylinder incorporating a moving piston and a compressed gas line that joins the installation site with the cylinder. A filter body for trapping particles from the gas stream of the gas generator is arranged on the compressed gas line.

Abstract: The invention relates to a method and to an autonomous device (10d) for injecting a fluid (F), that uses pyrotechnical means (1d). The invention can be used in particular for injecting a protection fluid (F) into a system that is subject to overheating (8d). The method is characterized in that it uses a thermally triggered charge (1d).

Abstract: A pressure accumulator (10) to establish the necessary power to drive and operate external equipment is described, such as hydraulic and/or mechanical systems comprising a main body (12) with an inner, longitudinal, main chamber (14) that is divided into several sub-chambers. The inner, main chamber (14) comprises at least three sub-chambers (14a, 14b, 14c) that are separated from each other with the help of mutual, intermediate pistons (16,18), where the first of said chambers is a compensating chamber (14a) arranged to take up the same pressure as the surroundings, the second of said chambers is a gas expansion chamber (14b) encompassing a gas generator (20) with an initiator/detonator (22), and the third of said chambers is a pressure chamber (14c) arranged to be pressurized with the help of the gas expansion chamber (14b) and to exert a force on the external equipment.

Abstract: A device for storing and converting chemical energy into controlled mechanical motion requires that chemical energy is released through ignition and stored in an accumulator. When a release valve is activated the stored energy is used to move a piston and push-rod arrangement, which can be used to actuate certain power tools.

Abstract: A combustion tool is provided, including an engine with a ratio of cylinder volume to combustion chamber volume of at least 1.1.

Abstract: A seat belt pretension with improved piston sealing performance. A piston has an expanding section formed at one end thereof contacting a force transmission component. When gas pressure resulting from reactive gas generated by a gas generator causes the piston to exert a pressing force on the force transmission component in the event of an emergency, the expanding section expands toward the inner circumferential surface of a pipe due to the gas pressure. As a result, the outer circumferential surface of the expanding section in the piston comes into contact with the inner circumferential surface of the pipe in a more efficient manner, resulting in enhanced sealing between the piston and the inner circumferential surface of the pipe. This prevents reactive gas from losing gas pressure, thereby allowing the gas pressure to more efficiently act on the piston.

Abstract: A triggered-stroke actuator with a damped return stroke. According to the invention, the actuator houses a piston (15), and a gas generator (19) including a fast combustion pyrotechnic charge, and further houses a pyrotechnic charge (38) of combustion that is slower than the combustion of said gas generator (19).

Abstract: In accordance with one embodiment of the present disclosure, a method includes driving a piston by mechanically harnessing an explosion of energetic material contained in a cartridge. The method further includes releasing cleanser contained in the cartridge in response to the explosion of the energetic material.

Abstract: A pre-tensioning device for a seat belt with a piston which is guided in a bent tube, and which in case of triggering is influenced by gas generated by a gas generator located in one section of the tube, to which a cable led into the tube by a cable opening is attached. The gas generator section (12) of tube (10) which accommodates gas generator (16) is offset from the piston path section (11) of tube (10) which accommodates piston (17) by creation of a narrowed cross-section inside the tube with a defined gas flow path (29, 41).

Abstract: The invention relates to a device for opening a passenger door (1) of an aircraft in case of emergency, which is fastened so it is manually pivotable on the fuselage (3) of the aircraft via a hinge and/or support arm configuration (2), an auxiliary-energy-operated emergency opening drive (4) being provided between the fuselage (3) and the passenger door (1), which automatically opens the passenger door (1) in accordance with an emergency control unit (5), the auxiliary energy for the emergency opening drive (4) being pyrotechnic energy, whose gas expanding inside an expansion chamber (6) after triggering by the emergency control unit (5) impinges the emergency opening drive (4) with pressure medium to open the passenger door (1), wherein said emergency opening drive (4) generates a rotational movement.

Abstract: The invention relates to an actuator with a housing (1) in which a piston (2) with a pin (3) is inserted in a longitudinally displaceable manner, and with an igniting element (4) with contact pins (5), wherein the contact pins (5) project out of the housing (1) on the connecting side (6) thereof, and, when the igniting element (4) is ignited by the propellants generated, the piston (2) is displaced in the direction of the actuating side (7) until the pin (3) projects out of the housing (1) on the actuating side (7). For production to be more cost-effective, it is proposed that the housing (1) is designed as a single part and in the form of a cylinder, and the connecting side (6) is injection moulded or bonded around the end surface (9) of the housing (1) with a cylindrical cover (10) fitting thereover.

Abstract: A method for stepping a first member relative to a second member. The method including: providing one of the first and second members with one of a plurality of pockets and movable pins offset from each other with a first spacing; providing the other of the first and second members with the other of the plurality of pockets and movable pins offset from each other with a second spacing, where the first spacing is different from the first spacing; and engaging at least one of the movable pins into a corresponding pocket to step one of the first and second members a predetermined linear and/or rotary displacement.

Abstract: A retractable steering mechanism includes a steering wheel, a steering column connected to the steering wheel, a telescopic device connected to steering column, a connector for connecting the telescopic device to two front wheels of the vehicle. A first cover is connected to the vehicle. A second cover is connected to the first cover and includes at least two slots defined therein. A shell is used to house the steering column so that the steering column is rotational but not movable in the shell. The shell includes at two bosses formed thereon and movably disposed in the slots. A moving unit is provided between the vehicle and the shell and operable, in a car accident, to retract and tilt the shell due to the bosses moving in the slots.

Abstract: An actuator includes; a cylinder connected to an ignition device; a piston slidably accommodated inside the cylinder, the piston having, in a desired section in the length direction, an enlarged diameter portion in which an outer diameter is enlarged; and a cylindrical stopper attached to an inner peripheral surface of the cylinder. The stopper includes, a main body portion fixed to the inner peripheral surface of the cylinder, and a nail portion which inwardly projects from the main body portion and is formed of an elastic material, wherein before activation of the ignition device, the piston is inhibited from moving in an axial direction by causing the nail portion to contact a part of the enlarged diameter portion, and after activation of the ignition device, the piston is inhibited from moving in a backward direction by causing the nail portion to contact another part of the enlarged diameter portion.

Abstract: The invention relates to an actuator comprising an actuator element movably supported at an actuator housing, a pyrotechnic pressure element to move the actuator element and a control means to control a force exerted onto the actuator element by the pressure element to move the actuator element.

Abstract: A pre-tensioning device for a seat belt with a piston which is guided in a bent tube, and which in case of triggering is influenced by gas generated by a gas generator located in one section of the tube, to which a cable led into the tube by a cable opening is attached. The gas generator section (12) of tube (10) which accommodates gas generator (16) is offset from the piston path section (11) of tube (10) which accommodates piston (17) by creation of a narrowed cross-section inside the tube with a defined gas flow path (29, 41).

Abstract: A pyrotechnic actuator is provided for an active hood that encompasses an installation site for a gas generator, a cylinder incorporating a moving piston and a compressed gas line that joins the installation site with the cylinder. A filter body for trapping particles from the gas stream of the gas generator is arranged on the compressed gas line.

Abstract: Methods and apparatus for an actuator system according to various aspects of the present invention include a housing; a sleeve having a deformable portion; and a mover for applying force to the sleeve. The sleeve, which is sealed to the housing, is configured to reside and move within the housing. The mover applies a force against a portion of the sleeve, causing the deformable portion to deform and move.

Abstract: A pyrotechnic actuator for an active bonnet is provided that includes, but is not limited to a cylinder, a piston which can be displaced in the cylinder under the influence of a propellant gas and a first gas generator for producing the propellant gas. The actuator includes, but is not limited to at least one further gas generator, which can be ignited independently of the first gas generator.

Abstract: The technical field of the invention is that of pyrotechnic actuators including a piston and having the essential function of exerting thrust to move an object by causing the piston to emerge. The invention relates more particularly to a pyrotechnic gas generator (2), a combustion chamber (3), a piston (10) capable of moving in a slide chamber (4) under the effect of said gas, the two chambers (3, 4) being in communication with each other. The main characteristic of this actuator is that it comprises a shutter device (5) implemented after said actuator (1) has been triggered to interrupt the communication between said chambers (3, 4), said shutter device (5) being included in the slide chamber (4).

Abstract: A pretensioner (20) for use with a seat belt system, the pretensioner comprising: a straight first tube (22) having a cylindrical wall (22a), a first end (24) and a second end (26), at least one of the first end (24) or the second end (26) having an opening (32); the first tube includes a first opening (38) in the wall (22a) to receive a second tube (50), the second tube (50) having a first end portion (52), a second end portion (56) and a medial portion (54), the medial portion configured to have a circular curvature of radius R1; the second end portion is situated so that its center is collinear with a central axis (64) extending through the center of the first tube (22) and wherein an axis extending through the center of the first end portion is arranged at an acute angle relative to the central axis (64); a pyrotechnic element (40) is provided at one end of the first tube to provide products of combustion to drive a piston (100) down the first tube, the motion of the piston moving a cable (80) in a direct

Abstract: A seat belt device has a gas generator for generating a high pressure gas when the vehicle is in emergency, a cylinder for conducting the high pressure gas from the gas generator, a piston received movably within the cylinder and pressed and moved by the high pressure gas, and a drive unit for rotating a winding shaft of a seat belt retractor in a direction of removing the slack of a belt, using the movement of the piston, wherein the pretensioner is employed with the energy absorbing mechanism, for reversely rotating the winding shaft if a tension acting on the belt exceeds a predetermined value after removing the slack of the belt.

Abstract: A low cost pretensioner is provided by using an ignitable charge and initiator integrated with a piston which is disposed in a cylindrical metal tube that has a common straight gas generation and piston travel bore so that a inexpensive metal tube rather than a complex casting can be used. A cable is connected at one end to the piston and passes through a cable deflection device having a locking device for locking the cable against travel in a reverse direction after tightening the seat belt system. The locking device may be an inexpensive, one-piece wedge-shaped clamping or gripping device which transfers the high tensile forces from the passenger's body pulling on the cable through the deflection device to a vehicle anchorage rather than through a locking device which is disposed within the cylinder tube which must have tube walls sufficiently strong to withstand such high tensile forces.

Abstract: Methods and apparatus for an actuator system according to various aspects of the present invention include a housing; a sleeve having a deformable portion; and a mover for applying force to the sleeve. The sleeve, which is sealed to the housing, is configured to reside and move within the housing. The mover applies a force against a portion of the sleeve, causing the deformable portion to deform and move.

Abstract: An apparatus comprises vehicle seat belt webbing (18), a cylinder (50), and a piston (60) movable in the cylinder to effect pretensioning of the seat belt webbing. The apparatus also comprises a fluid source (10) for providing fluid under pressure to move the piston (60) in the cylinder (50). The fluid source (10) comprises a propellant container (122) defining a propellant chamber (123) and a propellant (82) in the propellant chamber. The propellant (82) is ignitable to produce fluid under pressure. The propellant container (122) comprises a first portion (124) made from plastic and a second portion (126) made from metal. The metal portion (126) is secured to the plastic portion (124) to effect a hermetic seal of the propellant container (122).

Abstract: A pyromechanical cutting element has a housing (2) in which an electrical conductor (3) is arranged, a cutting plunger (5) with a cutting tool (8) to cut through the electrical conductor (3), and pyrotechnic charge (13) to drive the cutting plunger (5), with the cutting tool (8) bending over the electrical conductor (3) after cutting through it and forming a bending tongue (18) that sticks out from the conductor (3) in a way that interrupts the conductor (3). The electrical conductor (3) has a cross-sectional area reduction in the longitudinal direction (4) consisting of two transverse sides and two longitudinal sides. The cutting tool (8) first cuts through the cross-sectional area reduction (4) just on one transverse side and upon further advancement bends over the longitudinal sides at least in part, and, upon further advancement, the cutting tool (8) clamps the bending tongue (18) thus created.

Abstract: The invention relates to a drive unit for a safety belt tensioner which has a drive which can be triggered on the response of an acceleration sensor and which can be rotationally fixedly coupled to the belt winding reel. The drive is located in a drive chamber which is formed by two plates, which extend parallel to one another and which are provided with a coating material, and which has a drive band of which at least one end is fastened to a drive shaft.

Abstract: The provision of a structure and method for the affixing of a pretensioner gas generator by which the function of the pretensioner can be improved without the need to use an additional component part or to increase the thickness of the wall of the pipe. In the structure for the affixing of a pretensioner gas generator, a gas generator 16 is held in a pipe 12 by the expanding of the end part 12b of a pipe 12 to form a housing part 15 for the gas generator 16, the gas generator 16 is housed in the housing part 15, and the opened end 15b of the pipe 12 in the structure for the affixing of the gas generator is calked, an annular rib 17 projects outward in the axial direction from the inner circumferential edge part of the calked part A. In the method for the affixing of the gas generator, a press is used to form the abovementioned annular rib 17.

Abstract: The present invention provides an autonomous ram that comprises a first body having a first internal cavity and a first piston mounted therein. The first piston is attached to an actuator for moving the actuator between a first operative position and a second operative position. The ram further comprises a second body mounted within the first internal cavity. The second body comprises a second internal cavity that is defined by an internal wall having a locking portion. An explosive charge is located in the second internal cavity and is adapted for detonating in response to an impulse. A second piston located within the second internal cavity is operative for causing a rod to move from a first position to a second position in response to the detonation of the explosive charge. The displacement of the rod causes the actuator to move towards the second operative position. In the second position the rod is engaged with the locking portion of the second body.

Abstract: A positioning pin is knocked onto a crankshaft of an engine and a key way is formed in a boss of a first flywheel. When an outer rotor type generator is connected with the engine, the boss of the first flywheel is fitted over the crankshaft so as to adjust the positioning pin to the key way. When an inner rotor type generator is connected with the engine, a rotor shaft on which a rotor of a generator is mounted is fitted to a second flywheel so as to adjust the positioning pin to a key way formed in the second flywheel. The ignition angle of the engine is determined by fitting the positioning pin to the key way.