CA1216466A - Ignition device - Google Patents
Ignition deviceInfo
- Publication number
- CA1216466A CA1216466A CA000445864A CA445864A CA1216466A CA 1216466 A CA1216466 A CA 1216466A CA 000445864 A CA000445864 A CA 000445864A CA 445864 A CA445864 A CA 445864A CA 1216466 A CA1216466 A CA 1216466A
- Authority
- CA
- Canada
- Prior art keywords
- detonator
- striker pin
- actuating lever
- housing
- section
- 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
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- Automotive Seat Belt Assembly (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A detonator for mines, in particular training mines, includes a striker pin which is mechanically held in an inoperative position and is loaded by the action of a coil spring so that when released it is propelled axially towards a pyrophoric ignition charge to initiate an ignition chain. The detonator is of simple and inexpensive construction and can be mechanically released by forces acting in a variety of directions. The device includes a cylindrical housing in which a striker pin and actuating lever are mounted one behind the other in axial alignment. A plurality of cup-shaped members, preferably a pair, are mounted in the housing so as to surround at least a portion of the actuating lever and striker pin. Upon actuation of the lever by applying a force there-to in a predetermined direction the cup-shaped members are spread apart against a biasing force to release the striker pin in the firing direction.
A detonator for mines, in particular training mines, includes a striker pin which is mechanically held in an inoperative position and is loaded by the action of a coil spring so that when released it is propelled axially towards a pyrophoric ignition charge to initiate an ignition chain. The detonator is of simple and inexpensive construction and can be mechanically released by forces acting in a variety of directions. The device includes a cylindrical housing in which a striker pin and actuating lever are mounted one behind the other in axial alignment. A plurality of cup-shaped members, preferably a pair, are mounted in the housing so as to surround at least a portion of the actuating lever and striker pin. Upon actuation of the lever by applying a force there-to in a predetermined direction the cup-shaped members are spread apart against a biasing force to release the striker pin in the firing direction.
Description
~6~
The invention relates -to a de-tonating device for mines, in particular training mines.
It is a general object of the invention to provide a detonator for mines, in particular training mines, that is of simplified construction so that it is inexpensive to manufacture.
The invention provides a detonator for mines, comprising a housing in which a striker pin and an actuating lever are arranged in axial alignment; striker pin mounting means being formed by clamping elements that at least partially surround the striker pin and the actuating lever, said clamping elements defin-ing between them an axial recess that has an enlarged lower region which is tapered upwardly and downwardly in a vertical direction, said actuating lever having a thickened ex-tension matingly received in said enlarged region of said axial recess; said clamp-ing elements being fixed axially with respect to said housing and being held together at their upper ends, the lower ends of said clamping elements being separable against the force oE a spring means to free said striker pin; said axial recess having a second section, having a polygonal horizon-tal cross-section, extending upwardly from the lower enlarged region and merging into a third cylindrical section having a larger diameter; said actuating lever having a portion whose cross-section matingly fits said second section of the axial recess of the clamping levers and is connected to the thickened extension of the actuating lever, said portion connecting to a cylindrical region whose diameter is smaller than the diameter of the third cylindrical section of the axial recess.
The mechanically mounted striker pin can coact with, for example, a pyrotechnical charge. This charge in -turn can coact - 1 - I ~
i6 wlth a smoke and/or sound signal emitting charge of a training mlne .
The detonator of the invention preferably is universally applicable to different types of mines, in particular training mines, by responding to differently oriented Eorces, for example pressure, tension, torsion and tilting forces. In particular when using the device with training mines an additional requirement exists, tha-t is the detonator must be as inexpensive as possible.
This requirement is particularly advantageously met by means of the detonator of the invention which device is nevertheless quite safe.
6~
Other advantages of the invention will become apparent from the following detailed description and drawingr in which:
Figure 1 is a sectional elevational view of the detonator of the invention;
Fig~lre 2 is a cross-sectional view through the detonator on the line 2~2 of Figure l;
Figure 3 is an elevational view of one part of a two-pa:rt striker pin mounting;
Figure 4 is a side view in which only the release lever .lO of the detonator of Figure 1 is partially illustrated;
Figure 5 is an exploded view in perspective of a training mine including the detonator of Figure 1;
Figure 5a shows how the detonator can be re-cocked;
Figure 6 is a sectional view of an alternate version of the detonator which also can be used in conjunction with -the training mine illustrated in Figure 5; and Figures 7 to 10 show various modes of detonation by applying diEferent forces to the lever thereof as indicated by the arrows.
Referring now to the drawing, Figure 1 illustrates in longitudinal section a first embodiment of the detonator 1. This device consists of a mechanically actuated portion to which, for example, a pyrotechnical charge is operatively connected. The mechanically actuated portion encompasses a substantially cylindri-cal housing 10 in which a striker pin 12, preloaded by a coil spring 11, is releasably mounted. A mounting means for the pin 12 is formed by two half shells 14, 14' divided in a diametri.cal plane as described in detail hereinafter. The mounting means can, 6~i however, be of more complex cons-truction (see the embodiment of Figure 6), but is at all times symme-trically divided. For example it may be divided into three, four or more parts.
Figure 3 is a side elevational view of one half shell 14 or 14'. The operation of the mounting means 14, 14' is enclosed by a cover 15 having a central bore such that the mounting means, which is positioned within a central bore of the detonator 1 is held therein by the threadably mounted cover 15 so that no motion in an axial or radial direction is possible. The lower regions of -the mounting means half shells 14~ 14' are pressed radially inward-ly against each other by inwardly acting biasing means for example, in the form of an elastic O-ring 16. The pin 12 is thus fixed, and is acted on by the force of the coil spring 11 when in the inoperative position. The upper end of the pin 12 extends into a blind bore 42 of the actuating lever 40 and the pin 12 is held in an axial vertical position by means of a collar 30 formed at the lower end of each half shell 14, 14', which forms a cup-like recess into which the upper end of the pin 12 extends.
In the embodiment of Figure 1 the means for pressing together the two half shells 14, 14' of the percussion bolt mount-iny means i.e. the O-ring 16, is disposed within an annular recess 17 in the outer periphery of the half shells 14, 14', The O-ring 16 represents a particularly inexpensive but yet reliable biasing element. It is, of course, understood that other biasing means can be used with equal effectiveness, for example a ring spring can be used. Alternately, pressing together of the two half shells 14, 14' can be effected by spring means such as for example coil springs, which bear ayainst the inner wall of the cylindrical ~2~6~6;
housing 10 at one end and against the corresponding half shell at the other end. However, using such biasing means this leads to higher manufacturing costs.
The mounting means half shells 14, 14' form a composite central bore, or recess 18, the configuxation of which can be clearly seen from Figure 3. The portion of bore 18, in the lower region of the half shells 14, 1~' has first a relatively reduced diameter, which then merges into a portion of the bore with a larger diameter to define the collar 30 on which the head portion lQ 12a of the pin 12 abuts when in the armed or inoperative position.
The portion of the bore 18 of a larger diameter then merges into a recess 18~ which, for example, is in the shape of a hollow sphere or ellipsoid. The recess 18' is followed by a bore 18'' of reduced polygonal profile followed by a cylindrical bore portion 18''' of an enlarged diameter. In the bore 18 extends an actuating lever 40 which is illustrated partially ln cross-section in Figure 4.
The lever 40 includes a plurality of portions of dif:Eerent con~
figuration, which will be described in detail herei.naf-ter. In the lower region the actuating lever 40 is formed as a partially spherical portion 41 which matingly fits into the partially spherical bore portion 18'. The lever portion 41 and the corre-sponding bore portion 18' may also be ellipsoidally shaped. As mentioned above, the lever portion 41 has a blind bore 42 in which the upper end 12a of the percussion bolt 12 projects above the collar 30. The spherically or ellipsoidally shaped lever portion 41 is adjoined by a polygonal, e.g. hexagonally profiled region 44 which in turn is adjoined by a cylindrical portion 43. The cylin-6~i drical portion 43 in turn ends, as can be seen from Figure 1, in a disc 45 which is disposed in a plane normal to the longitudinal axis of the detonator. When in an operatively mounted condition (Figure 1) the spherically shaped portion ~1 of the actuatiny lever 40 is arranged in the hollow spherically shaped recess 18', where-as the hexagonal region 44 of the actuating lever 40 is disposed in the bore portion 18'' of polygonal cross-section in the mount-ing means. In the illustrated embodiment the bore portion 18'' has a square cross-section, whereas the cornered region 44 of the actuating lever 40 has an octagonal shape. There is illustrated in Figure 5 a training mine system which uses a detonator 1 in accordance with this invention.
In Figure 6 there is illustrated schematically in cross-section a slightly modified version of the detonator of this invention forming part of a complete detonator device with two safety means 50 and 51. These safety means 50 and 51 are also illustrated in Figure 5. The first safety means includes a ring 50, which is slidably movable between a safety position and an armed operative position as illustrated by the arrows 50b and 50a respectively, in Fiqure 6. In the safety position -the safety ring 50 is slid downwardly thereby pressing two balls 52, disposed in mating bores of the housing 10, against the striker pin mounting means 14 r 14' so that the latter cannot be radially moved outwardly.
A rubber boot 54 and an O-ring 55 seal the detonator against moisture. The second safety means consists of a cotter pin 51 inserted in a bore that extends -transversely with respect to the longitudinal axis of the housing 10 and blocks the path of the ~2~46~
striker pin 12 so that it cannot impinge on the pyrophoric detonating charge lOl. In contrast to known safety arrangements, the first safety device S0 makes possible subsequent re-arming and thereby re-use of a first disarmed ignition device. The ring 50 can be simply slid into the safety position to disarm the device.
Figures 7 to lO illustrate the various motions that can be imparted on the actuating lever 40 in order to release the ignition device. These various motions are illustrated by arrows at the top of the actuating lever 40.
The aforedescribed embodiments of the detonator of this invention are universally applicable to different types of mines, in particular training mines. They comprise only a small number of parts which are simply and inexpensively constructed. Thereby it is possible to manufacture a very inexpensive detonator. The pyrotechnical ignition means are not in all cases necessary. An electric, optical or acoustic indication of the mine function, after release of the detonator, is also realizable in other ways.
The ignition device of this invention operates as follows:
By applying pressure or pull on the actuating lever 40 in one of two directions illustrated by the double-arrow 100 (Figure 1), the exterior peripheral surface of the spherically shaped lever portion 41 of the actuating lever 40 is pushed against the inner wall of the hollow spherically shaped bore portion 18' and presses the half shells 14, 14' apart from each other against the force of the O-ring 16 in the lower region thereof. This has as a consequence that first the striker pin head portion 12a which rests against the collar 30 is released, and the pin 12 under the "~
6~i action of the now released coil spring 11 is propelled in the direction of the pyrotechnical ignition means 101. Release of the pin 12 can also be effected by means of a tilting motion at any one of randomly selected directions, which motion is illustrated schematically by the double arrow 102 i.n Figure 1 and by the double arrow in Figure 7. Finally, torsional motion, illustrated by means of the double-arrow 103 (Figure 1) and also in Figure 8 can be imparted onto the actuating lever 40, which force is applied preferably tangentially via the disc 45 and which leads to a release of the pin 12. This is effected by virtue of the fact that in the interior of the polygonal bore portion 18'' the hexagonal or octagonal lever portion 44 of the actuating lever 40, which is rotated about the longitudinal axis thereof, applies a force against the wall of this bore portion 18'' which causes the half shells 14, 14' to be spread apart.
Figure 5 also shows various other features of the con-struction. The lever 40 may include or be replaced by a pressure plate 56 or a wire actuated rotatable star 57, with the lever 40 being preferably connected with the part 43 by means of a socket joint and pin 58. Other actuating devices can be provided coupled with the part 43. A red colour ring 59 may be included on the housing 10, this ring being exposed when the part 50 is in the armed condition. The O-ring 51a normally lies in the upper position shown, and is rolled down on the pin 51 before same is withdrawn.
The detonator couples with a smoke emitting training mine 60.
~2~61~
Figure 5a shows the detonator housing 10 and a re-cocking ~ool 60 of which end 61 is used to push back the striker pin 12. The ring 50 must be in the armed position to effect :-e-cocking and may then be reset to the sa~e condition.
Although a limited number of embodiments of the invention ha~e been illustrated in the accompanying drawings and described in the foregoing specification, it is to be especially understood that various changes, such as in the relative dimensions of the parts, materials used, and the likel as well as the suggested ~0 manner of use of the apparatus of the invention, may be made there-ir~ without departing from the spirit and scope of the invention, as will now be apparent to those skilled in the art.
The invention relates -to a de-tonating device for mines, in particular training mines.
It is a general object of the invention to provide a detonator for mines, in particular training mines, that is of simplified construction so that it is inexpensive to manufacture.
The invention provides a detonator for mines, comprising a housing in which a striker pin and an actuating lever are arranged in axial alignment; striker pin mounting means being formed by clamping elements that at least partially surround the striker pin and the actuating lever, said clamping elements defin-ing between them an axial recess that has an enlarged lower region which is tapered upwardly and downwardly in a vertical direction, said actuating lever having a thickened ex-tension matingly received in said enlarged region of said axial recess; said clamp-ing elements being fixed axially with respect to said housing and being held together at their upper ends, the lower ends of said clamping elements being separable against the force oE a spring means to free said striker pin; said axial recess having a second section, having a polygonal horizon-tal cross-section, extending upwardly from the lower enlarged region and merging into a third cylindrical section having a larger diameter; said actuating lever having a portion whose cross-section matingly fits said second section of the axial recess of the clamping levers and is connected to the thickened extension of the actuating lever, said portion connecting to a cylindrical region whose diameter is smaller than the diameter of the third cylindrical section of the axial recess.
The mechanically mounted striker pin can coact with, for example, a pyrotechnical charge. This charge in -turn can coact - 1 - I ~
i6 wlth a smoke and/or sound signal emitting charge of a training mlne .
The detonator of the invention preferably is universally applicable to different types of mines, in particular training mines, by responding to differently oriented Eorces, for example pressure, tension, torsion and tilting forces. In particular when using the device with training mines an additional requirement exists, tha-t is the detonator must be as inexpensive as possible.
This requirement is particularly advantageously met by means of the detonator of the invention which device is nevertheless quite safe.
6~
Other advantages of the invention will become apparent from the following detailed description and drawingr in which:
Figure 1 is a sectional elevational view of the detonator of the invention;
Fig~lre 2 is a cross-sectional view through the detonator on the line 2~2 of Figure l;
Figure 3 is an elevational view of one part of a two-pa:rt striker pin mounting;
Figure 4 is a side view in which only the release lever .lO of the detonator of Figure 1 is partially illustrated;
Figure 5 is an exploded view in perspective of a training mine including the detonator of Figure 1;
Figure 5a shows how the detonator can be re-cocked;
Figure 6 is a sectional view of an alternate version of the detonator which also can be used in conjunction with -the training mine illustrated in Figure 5; and Figures 7 to 10 show various modes of detonation by applying diEferent forces to the lever thereof as indicated by the arrows.
Referring now to the drawing, Figure 1 illustrates in longitudinal section a first embodiment of the detonator 1. This device consists of a mechanically actuated portion to which, for example, a pyrotechnical charge is operatively connected. The mechanically actuated portion encompasses a substantially cylindri-cal housing 10 in which a striker pin 12, preloaded by a coil spring 11, is releasably mounted. A mounting means for the pin 12 is formed by two half shells 14, 14' divided in a diametri.cal plane as described in detail hereinafter. The mounting means can, 6~i however, be of more complex cons-truction (see the embodiment of Figure 6), but is at all times symme-trically divided. For example it may be divided into three, four or more parts.
Figure 3 is a side elevational view of one half shell 14 or 14'. The operation of the mounting means 14, 14' is enclosed by a cover 15 having a central bore such that the mounting means, which is positioned within a central bore of the detonator 1 is held therein by the threadably mounted cover 15 so that no motion in an axial or radial direction is possible. The lower regions of -the mounting means half shells 14~ 14' are pressed radially inward-ly against each other by inwardly acting biasing means for example, in the form of an elastic O-ring 16. The pin 12 is thus fixed, and is acted on by the force of the coil spring 11 when in the inoperative position. The upper end of the pin 12 extends into a blind bore 42 of the actuating lever 40 and the pin 12 is held in an axial vertical position by means of a collar 30 formed at the lower end of each half shell 14, 14', which forms a cup-like recess into which the upper end of the pin 12 extends.
In the embodiment of Figure 1 the means for pressing together the two half shells 14, 14' of the percussion bolt mount-iny means i.e. the O-ring 16, is disposed within an annular recess 17 in the outer periphery of the half shells 14, 14', The O-ring 16 represents a particularly inexpensive but yet reliable biasing element. It is, of course, understood that other biasing means can be used with equal effectiveness, for example a ring spring can be used. Alternately, pressing together of the two half shells 14, 14' can be effected by spring means such as for example coil springs, which bear ayainst the inner wall of the cylindrical ~2~6~6;
housing 10 at one end and against the corresponding half shell at the other end. However, using such biasing means this leads to higher manufacturing costs.
The mounting means half shells 14, 14' form a composite central bore, or recess 18, the configuxation of which can be clearly seen from Figure 3. The portion of bore 18, in the lower region of the half shells 14, 1~' has first a relatively reduced diameter, which then merges into a portion of the bore with a larger diameter to define the collar 30 on which the head portion lQ 12a of the pin 12 abuts when in the armed or inoperative position.
The portion of the bore 18 of a larger diameter then merges into a recess 18~ which, for example, is in the shape of a hollow sphere or ellipsoid. The recess 18' is followed by a bore 18'' of reduced polygonal profile followed by a cylindrical bore portion 18''' of an enlarged diameter. In the bore 18 extends an actuating lever 40 which is illustrated partially ln cross-section in Figure 4.
The lever 40 includes a plurality of portions of dif:Eerent con~
figuration, which will be described in detail herei.naf-ter. In the lower region the actuating lever 40 is formed as a partially spherical portion 41 which matingly fits into the partially spherical bore portion 18'. The lever portion 41 and the corre-sponding bore portion 18' may also be ellipsoidally shaped. As mentioned above, the lever portion 41 has a blind bore 42 in which the upper end 12a of the percussion bolt 12 projects above the collar 30. The spherically or ellipsoidally shaped lever portion 41 is adjoined by a polygonal, e.g. hexagonally profiled region 44 which in turn is adjoined by a cylindrical portion 43. The cylin-6~i drical portion 43 in turn ends, as can be seen from Figure 1, in a disc 45 which is disposed in a plane normal to the longitudinal axis of the detonator. When in an operatively mounted condition (Figure 1) the spherically shaped portion ~1 of the actuatiny lever 40 is arranged in the hollow spherically shaped recess 18', where-as the hexagonal region 44 of the actuating lever 40 is disposed in the bore portion 18'' of polygonal cross-section in the mount-ing means. In the illustrated embodiment the bore portion 18'' has a square cross-section, whereas the cornered region 44 of the actuating lever 40 has an octagonal shape. There is illustrated in Figure 5 a training mine system which uses a detonator 1 in accordance with this invention.
In Figure 6 there is illustrated schematically in cross-section a slightly modified version of the detonator of this invention forming part of a complete detonator device with two safety means 50 and 51. These safety means 50 and 51 are also illustrated in Figure 5. The first safety means includes a ring 50, which is slidably movable between a safety position and an armed operative position as illustrated by the arrows 50b and 50a respectively, in Fiqure 6. In the safety position -the safety ring 50 is slid downwardly thereby pressing two balls 52, disposed in mating bores of the housing 10, against the striker pin mounting means 14 r 14' so that the latter cannot be radially moved outwardly.
A rubber boot 54 and an O-ring 55 seal the detonator against moisture. The second safety means consists of a cotter pin 51 inserted in a bore that extends -transversely with respect to the longitudinal axis of the housing 10 and blocks the path of the ~2~46~
striker pin 12 so that it cannot impinge on the pyrophoric detonating charge lOl. In contrast to known safety arrangements, the first safety device S0 makes possible subsequent re-arming and thereby re-use of a first disarmed ignition device. The ring 50 can be simply slid into the safety position to disarm the device.
Figures 7 to lO illustrate the various motions that can be imparted on the actuating lever 40 in order to release the ignition device. These various motions are illustrated by arrows at the top of the actuating lever 40.
The aforedescribed embodiments of the detonator of this invention are universally applicable to different types of mines, in particular training mines. They comprise only a small number of parts which are simply and inexpensively constructed. Thereby it is possible to manufacture a very inexpensive detonator. The pyrotechnical ignition means are not in all cases necessary. An electric, optical or acoustic indication of the mine function, after release of the detonator, is also realizable in other ways.
The ignition device of this invention operates as follows:
By applying pressure or pull on the actuating lever 40 in one of two directions illustrated by the double-arrow 100 (Figure 1), the exterior peripheral surface of the spherically shaped lever portion 41 of the actuating lever 40 is pushed against the inner wall of the hollow spherically shaped bore portion 18' and presses the half shells 14, 14' apart from each other against the force of the O-ring 16 in the lower region thereof. This has as a consequence that first the striker pin head portion 12a which rests against the collar 30 is released, and the pin 12 under the "~
6~i action of the now released coil spring 11 is propelled in the direction of the pyrotechnical ignition means 101. Release of the pin 12 can also be effected by means of a tilting motion at any one of randomly selected directions, which motion is illustrated schematically by the double arrow 102 i.n Figure 1 and by the double arrow in Figure 7. Finally, torsional motion, illustrated by means of the double-arrow 103 (Figure 1) and also in Figure 8 can be imparted onto the actuating lever 40, which force is applied preferably tangentially via the disc 45 and which leads to a release of the pin 12. This is effected by virtue of the fact that in the interior of the polygonal bore portion 18'' the hexagonal or octagonal lever portion 44 of the actuating lever 40, which is rotated about the longitudinal axis thereof, applies a force against the wall of this bore portion 18'' which causes the half shells 14, 14' to be spread apart.
Figure 5 also shows various other features of the con-struction. The lever 40 may include or be replaced by a pressure plate 56 or a wire actuated rotatable star 57, with the lever 40 being preferably connected with the part 43 by means of a socket joint and pin 58. Other actuating devices can be provided coupled with the part 43. A red colour ring 59 may be included on the housing 10, this ring being exposed when the part 50 is in the armed condition. The O-ring 51a normally lies in the upper position shown, and is rolled down on the pin 51 before same is withdrawn.
The detonator couples with a smoke emitting training mine 60.
~2~61~
Figure 5a shows the detonator housing 10 and a re-cocking ~ool 60 of which end 61 is used to push back the striker pin 12. The ring 50 must be in the armed position to effect :-e-cocking and may then be reset to the sa~e condition.
Although a limited number of embodiments of the invention ha~e been illustrated in the accompanying drawings and described in the foregoing specification, it is to be especially understood that various changes, such as in the relative dimensions of the parts, materials used, and the likel as well as the suggested ~0 manner of use of the apparatus of the invention, may be made there-ir~ without departing from the spirit and scope of the invention, as will now be apparent to those skilled in the art.
Claims (5)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A detonator for mines, comprising a housing in which a striker pin and an actuating lever are arranged in axial alignment;
striker pin mounting means being formed by clamping elements that at least partially surround the striker pin and the actuating lever, said clamping elements defining between them an axial recess that has an enlarged lower region which is tapered upwardly and downwardly in a vertical direction, said actuating lever having a thickened extension matingly received in said enlarged region of said axial recess;
said clamping elements being fixed axially with respect to said housing and being held together at their upper ends, the lower ends of said clamping elements being separable against the force of a spring means to free said striker pin;
said axial recess having a second section, having a polygonal horizontal cross-section, extending upwardly from the lower enlarged region and merging into a third cylindrical section having a larger diameter;
said actuating lever having a portion whose cross-section matingly fits said second section of the axial recess of the clamping levers and is connected to the thickened extension of the actuating lever, said portion connecting to a cylindrical region whose diameter is smaller than the diameter of the third cylindrical section of the axial recess.
striker pin mounting means being formed by clamping elements that at least partially surround the striker pin and the actuating lever, said clamping elements defining between them an axial recess that has an enlarged lower region which is tapered upwardly and downwardly in a vertical direction, said actuating lever having a thickened extension matingly received in said enlarged region of said axial recess;
said clamping elements being fixed axially with respect to said housing and being held together at their upper ends, the lower ends of said clamping elements being separable against the force of a spring means to free said striker pin;
said axial recess having a second section, having a polygonal horizontal cross-section, extending upwardly from the lower enlarged region and merging into a third cylindrical section having a larger diameter;
said actuating lever having a portion whose cross-section matingly fits said second section of the axial recess of the clamping levers and is connected to the thickened extension of the actuating lever, said portion connecting to a cylindrical region whose diameter is smaller than the diameter of the third cylindrical section of the axial recess.
2. A detonator as set forth in claim 1, wherein said enlarged lower region of the axial recess and the thickened exten-sion of the actuating lever have horizontal profiles that are rotationally symmetrical.
3. A detonator as set forth in claim 1, wherein said spring means is in the form of an elastic O-ring that surrounds the clamping elements in the lower regions thereof.
4. A detonator as set forth in claim 1, 2 or 3, wherein said housing has a pair of diametrically opposite bores therein, a pair of balls respectively movably mounted in said pair of oppo-site bores, a cylindrical sleeve having an internal diameter which is slightly larger than the external diameter of said housing and having an annular internal recess, said sleeve being axially slid-ably mounted on said housing to be movable between a safety posi-tion and an operative position, whereby when said sleeve is in its safety position the internal wall of the sleeve biases the pair of balls against the external peripheral surface of said clamping elements so as to prevent them from moving apart to thereby release the striker pin.
5. A detonator as set forth in claim 1, 2 or 3, including a cotter pin diametrically removably mounted through said housing below said striker pin so as to block the path of movement of the striker pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000445864A CA1216466A (en) | 1984-01-23 | 1984-01-23 | Ignition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000445864A CA1216466A (en) | 1984-01-23 | 1984-01-23 | Ignition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1216466A true CA1216466A (en) | 1987-01-13 |
Family
ID=4127006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000445864A Expired CA1216466A (en) | 1984-01-23 | 1984-01-23 | Ignition device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1216466A (en) |
-
1984
- 1984-01-23 CA CA000445864A patent/CA1216466A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |