US3469757A - Power devices employing impact ignited low explosive - Google Patents

Power devices employing impact ignited low explosive Download PDF

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Publication number
US3469757A
US3469757A US593144A US3469757DA US3469757A US 3469757 A US3469757 A US 3469757A US 593144 A US593144 A US 593144A US 3469757D A US3469757D A US 3469757DA US 3469757 A US3469757 A US 3469757A
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Prior art keywords
barrel
action
breech
housing
charge
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Expired - Lifetime
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US593144A
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English (en)
Inventor
Robert C Kvavle
William L Lewis
Charles J De Caro
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United Shoe Machinery Corp
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United Shoe Machinery Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
    • B25C1/082—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a pellet
    • B25C1/085—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a pellet trigger operated

Definitions

  • a further object of this invention is to provide, an an explosively actuated fastener driving tool of the type having a fluid pressure driven ram operative by combustion of a solid, low explosive, a mechanism requiring the expenditure of only a moderate amount of manual energy for cocking the tool.
  • Another object is to provide, in a device of the type indicated, means whereby it may be conveniently breech loaded with successive case-less, primer free charges to be exploded, and a charge readily unloaded in the event of non-fire or misre.
  • the illustrative tools comprise a barrel having a breech end wherein a substantially closed firing chamber is defined on one side by an anvil having vents arranged to be sealed by a charge prior to and during ignition, and on the opposite side by firing mechanism including a charge impacting pin and a charge containing member.
  • a substantially closed firing chamber is defined on one side by an anvil having vents arranged to be sealed by a charge prior to and during ignition, and on the opposite side by firing mechanism including a charge impacting pin and a charge containing member.
  • firing mechanism including a charge impacting pin and a charge containing member.
  • the tools of the present invention to be described preferably resemble the tool disclosed in the last-mentioned patent in several other respects, one of which is that cooking is accomplished by pressing the muzzle of the barrel against an abutment or work piece and relatively advancing the housing axially.
  • Conventional explosively actuated tools use one spring for operating a striker and a second spring for repositioning an action; cumulative resistance of these springs must be overcome in cocking such tools.
  • a further feature of the present invention resides in providing mechanism for eliminating the action repositioning spring and hence its resistance to cocking.
  • safe cocking is attained, a sear of the ring mechanism being adavntageously used to transfer striker spring load to an action which is axially movable by the barrel, but readily disconnectable therefrom, as will be explained.
  • a further feature is to be recognized in an alternate form of the invention wherein breech block mechanism, relatively movable toward and from the breech end of a barrel to dene a firing chamber and confine therein a charge to be impact exploded by a ring pin, has a shroud slidably carrying the firing pin and is fixedly mounted in the breech block for telescoping relation with the breech end of the barrel, an end of the shroud being recessed to receive and hold the charge whereby, prior to completion of its dellagration, it coacts with the shroud to seal off the chamber from the bore of the barrel.
  • FIG. 1 is a longitudinal section of a hand-held explosively actuated tool for driving fasteners or the like, the tool being in cocked to fire position;
  • FIG. 2 is a view similar to FIG. l but with parts shown at a later stage in a cycle of operation, after the tool has been fired, and with its barrel still connected to an action;
  • FIG. 3 is a view similar to FIGS. 1 and 2 but indicating a later stage when the barrel has been disconnected from the action and moved to open or reloading position;
  • FIG. 4 is a view corresponding to FIGS. 1-3 but showing the parts at a still later stage when the tool has been reloaded with a charge and partly muzzle loaded with a fastener, the tool now being prepared for recocking;
  • FIG. 5 is a transverse section taken on the line V-V in FIG. 1;
  • FIG. 6 is a transverse section taken on the line VI-VI of FIG. l;
  • FIG. 7 is a partial transverse section showing an alternate form of anvil having external vents
  • FIG. 8 is a longitudinal section of a portion of a tool similar to that of FIGS. 1-7 but embodying an alternate form of the invention facilitating loading and unloading, the tool being in cocked to fire position;
  • FIG. 9 is a longitudinal section largely corresponding to FIG. 8 but showing the tool in its opened condition for rear breech loading or unloading;
  • FIG. l() is an enlarged transverse section taken on the line X-X of FIG. 8;
  • FIG. 11 is an enlarged transverse section taken on the line XI -XI in FIG. 8.
  • the front end breach loading tool of FIGS. 1 6 comprises a barrel housing one end of which is secured in an axial aligned tubular portion of a gripy assembly 12 (FIGS. 1 4).
  • the housing 10 is formed with an opening 16.
  • the illustrative tool largely corresponds to that fully disclosed in the aforementioned Patent 3,168,744 and hence normally may include a fastener driving ram 18 having a piston head 20 provided with a friction ring 22 engageable with the interior wall of the barrel 14.
  • An end of the ram 18 is received in a guide 24 slidably positioned in the muzzle end of the barrel and adapted to receive a fastener, for instance a stud 26, to be driven.
  • an adaptor Threadedly secured to the breech end of the barrel 14 is an adaptor (FIGS. 1 4) arranged removably to position an anvil 32 at one side of a firing chamber.
  • the anvil preferably has a raised portion 34 for facilitating impact ignition thereagainst of a charge 36 (FIG. 3) of solid low explosive, preferably in the reversible end-forend pellet form as disclosed in U.S. application Ser. No. 524,168 referred to above.
  • a circular series of axial vents 3S in the anvil 32 will be closed by the charge 36 as shown in FIG.
  • a power sleeve 40 which, for a purpose later mentioned, is removably mounted.
  • the other side of the firing chamber from the anvil 32 is sealed by a tubular holder 42 telescoped in the sleeve 4t)v and an axially slidable firing pin 44 in the holder, an enlarged collar 46 of the pin being slidably retained in an enlarged bore 48 formed in the holder by means of an insert 50 threaded into one end of an action 52.
  • the firing chamber is thus adapted to receive charges 36 of fixed diameter substantially corresponding to the internal diameter of the power sleeve 4t), and that the axial length of the charge may be selected according to whether greater or less power output is required.
  • the sleeve 40 is designed to engage the anvil 32 endwise regardless of the selected axial length of the charge 36, a friction ring 54 (FIG. 3) detachably retaining the power sleeve 40 in the barrel adaptor 30.
  • Firing mechanism next to be explained comprises a striker 56 slidable within the action 52, a striker spring 58 one end of which abuts the bottom of an internal recess 60 in the grip assembly 12 and the other end of which is seated in the striker 56, a sear 62 nested in a transverse bore 64 in the striker, and a trigger 66 pivotally mounted at 68 in the grip assembly 12.
  • a striker 56 slidable within the action 52
  • a striker spring 58 one end of which abuts the bottom of an internal recess 60 in the grip assembly 12 and the other end of which is seated in the striker 56
  • a sear 62 nested in a transverse bore 64 in the striker
  • a trigger 66 pivotally mounted at 68 in the grip assembly 12.
  • the striker spring 58 is held compressed, when the tool is cocked, by means of an enlarged end 70 of the sear 62 extending for engagement with the wall of a slot 72 of the action under the iniiuence of a spring 74 nested between a collar 76 of the scar and a shoulder of the bore 64.
  • a leaf spring 78 having one end abutting an internal wall of the assembly 12 has its other end arranged to bias the trigger 66 clockwise as shown in FIGS. 1-4, to inoperative position.
  • the trigger 36 is pulled and thus pivoted counterclockwise against the resistance of the spring 74 to free the sear end 70 from the action slot 72.
  • potential energy of the spring 58 is used to cause the striker 56 rapidly to advance and, through an axial blow on the firing pin 44, to impact the charge 36, the gases of combustion passing through the vents .38 to operate the ram 18 and thereby drive the fastener 26.
  • the sear end 70 rides on the inside wall of the action 52 but cannot enter a vent hole 80 which merely allows air in the action to escape through the barrel housing 10.
  • the barrel and its adaptor 30 are operatively connected to the action 52 as will next be described.
  • the striker 56 is prevented from moving any further forward, except to a very limited extent. This is because an end 82 of the Sear now engages an inner end of a screw 84 (FIG. 2) threaded into and projecting radially within the barrel housing 10. In pulling the barrel 14 forwardly to open the breech (as shown in FIG.
  • This interconnection or locking system preferably, as shown in FIGS. 1, 2, 5, is in the form of a plurality of axially extending, segmental locking levers 86 which, in their connecting position, are disposed about a portion of the circumference of the adaptor.
  • Each of the levers 86 may constitute a one-quarter or a one-third segment of a machined ring from which they are respece tively cut.
  • a wire 88 (FIG. 5) is looped about the action 52 and extends through an external groove formed on the rearward ends of the levers 86.
  • Forward ends 90 of the levers 86 may frictionally engage a recessed external wall 92 of the adaptor.
  • the ends 90 are then urged radially outward partly by reason of the wire S8 tending to pivot the levers on a collar of the adaptor 30, and partly by a resilience in the ends 90 when an intermediate fulcrum portion 96 of the levers 66 engages an inside wall 98 of the housing 10.
  • the action slot 72 is axially advanced relatively to the restrained sear 62 until the latter, by reason of the compressed sear spring 74, has its end 82 released from the screw 84 and the opposite sear end 70 reseatcd in the action slot 72.
  • the striker 56 is further urged forwardly by its spring 58, and the action 52 is consequently yieldably held in a forward position wherein the forward ends 9i) of the locking levers 86 disengage from the adaptor 30 and radially spring open into relaxed position in an internal recess 99 in the barrel housing 10 as shown in FIG. 3.
  • the barrel 14 is thus disconnected or unlocked from the action 52 as soon as the fulcra 96 move into the recess 99, and may be moved further forwardly until a safety key 100 (FIG. 3) engages an end of a barrel housing slot 102.
  • the ram 18 was, of course, advanced during the prior firing of the tool, and a conical mouth 104 of the power sleeve 40 may now receive the next propellant pellet 36 (FIG. 3) to be exploded, the pellet being introduced through the opening 16, and the friction ring 54 insuring that the sleeve was retracted along with the adaptor 30 to this easily accessible reloading position.
  • the pellet 36 will normally readily descend by gravity to seat itself properly over the central anvil igniter portion 34.
  • the charge 36 may be reversible end-for-end and have a thin intermediate web portion which is thus in close proximity to the anvil igniter portion 34. lf for some reason the prior charge 36 had failed to ignite, the sleeve 40 may be withdrawn from the adaptor 30 along with the faulty pellet. To extract such a pellet the sleeve is then pressed over a pin and the low explosive pellet safely dislodged.
  • the stud 26 may be thrust into the muzzle end of the barrel preparatory to cocking, as indicated in FIG. 4.
  • a spring-pressed plunger 166 in the barrel housing 1t) and backed by a screw 103 in a guidewa'y 110 secured to the housing 1b serves, when the barrel 14 is vertically slidable, to frictionally engage it and prevent its premature advance movement until the plunger is displaced outwardly by a cam 112 formed on the adaptor 30.
  • FIG. 7 illustrates an alternate form of anvil 114i ⁇ which may be used in lieu of the anvil 32.
  • the anvil 114 instead of having internal vent holes 38 circular in section, is formed with opposed external cutouts 116, thus defining, with the internal bore of the adaptor Sti, two relatively large exhaust ports respectively having opposed or double convex walls. It is believed that for the same output the greater surface area thus exposed to the same volume of ported gases of combustion would incur less erosive effect than the circular bores 38.
  • A- further advantage of such an externally ported anvil 114 is that it is subjected to lower stress concentration by reason of the larger dimension afforded between the vents, thus reducing fatigue cracking in the port walls. It will be understood that the power sleeve 4h blocks the two exhaust ports until sufficient gas pressure develops to blow it back from the anvil 114, thus improving burning of the charge.
  • FIGS. 8-l1 inclusive An alternate construction shown in FIGS. 8-l1 inclusive, which may be termed a rear or breech block loading arrangement in contrast to the front breech loading structure described above with reference to FIGS. 1-7 inclusive, will next be explained and its relative advantages indicated.
  • the power sleeve 4() is not included, and that a bolt, sleeve or shroud 126 (FIGS. 8, 10) slidably carrying a firing pin 122 has a force I'it or is otherwise fixedly secured in an end of an action 124.
  • the shroud 126 has a forwardly projecting portion for telescoping with the breech end of a barrel adaptor 126 (taking the place of the adaptor 30 in FIGS.
  • the forward end of the shroud is formed with an axial recess to provide a mouth 128 which is readily accessible in breech open condition and slightly tapered axially for receiving a charge 130, such as the pellet 36, to be exploded.
  • An anvil 132 (FIGS. 8, 10) is retained between an end of the barrel 14 and the adaptor 126.
  • the anvil 132 defines one side of a substantially closed firing chamber.
  • a central protrusion 134 of the anvil extending toward the breech is preferably more pronounced than the previously mentioned raised anvil portion 34.
  • the mouth 128 of the shroud backed by the resistance of the spring 58, axially cooperates with the relatively retracting anvil 132 to press the charge 130 tightly into the tiring chamber between confronting faces of the shroud or mouth 123 and of the anvil protrusion 134.
  • the arrangement is such that a lip of the shroud 12b serves with the axially compressed charge itself to seal off the firing chamber from a pair of arcuate anvil vents 136 otherwise communicable with the bore of the barrel 1d.
  • the bore of the mouth 123 at its wider end is only slightly larger in diameter than the diametral dimension between the respective inner walls of the vents 136.
  • vents 136 are rst unsealed only when, advantageously, detlagration of the charge 13d has progressed radially under increasing pressure of the gas generated upon ignition, nearly to the point of complete consumption.
  • the vents 136 are shaped to afford maximum porting area consistent with a strong anvil, and it is important that their inner edges at the breech end of the protrusion 134 be sharply and accurately defined to insure proper initial sealing of the vents by each charge 131B.
  • segmental locking-levers 14n (somewhat like those designated 86 in FIG. l) releasably secure the barrel 14 and an action 142 together during the ring sequence.
  • the levers ⁇ are confined in the bore of the barrel housing 16, front ends of the levers being urged radially inward to seat behind the flanged breech end of the adaptor 126 by a resilient elastomeric ring 144 (FIG. 8) bearing outwardly on the rearward ends of the levers 140.
  • the function of the ring 144 is, like that of the plunger 1% in FIG. 4, to urge retention of the barrel 14.
  • An inner pivotal shoulder 146 on the levers is axially spaced from their front ends and disposed to engage a flanged breech end of the action 124 thereby permitting clearance or take up space between the confronting end faces of the action and the adaptor, and hence accommodating pellets of different power level thickness to be exploded.
  • the operator may use two hands to open the breech by relatively moving the barrel 14 forwardly with respect to the housing 1t), or he may, with only one hand on the grip portion l2, swing the tool so that the barrel is relatively extended by inertia.
  • Such advancing movement of the barrel also resets the sear 62, the action 124 being simultaneously advanced by the locking levers 14d, but the striker 56 being almost immediately prevented from further moving forwardly by reason of engagement of an end of the sear 62 with an end 156 (FIG. 9) of a longitudinal slot in the housing 10.
  • the breech block loaded tool of FIGS. 8-11 is usually preferred since it is of simpler structure, avoids any change of blow-by or fouling which might be permitted by the power sleeve it@ if it corrodes, enables the tool to be loaded With its charge more easily, and in the event of misfire or nonre the readily accessible charge can be easily unloaded by directly picking it from the mouth 128.
  • a barrel having a breech end and axially movable between open and closed positions, an anvil secured in the breech end of the barrel and having a vent affording communication between the bore of the barrel and one side of a tiring chamber, and firing mechanism for confining the charge in said chamber in position to seal off said vent during ignition of said charge, said mechanism including a charge receiving member yieldingly movable toward the anvil, and a firing pin slidable in the member for imp-acting at least a portion of the sealed oncharge against said anvil.
  • a barrel having a breech end and axially movable between open and closed positions, an anvil secured in the breech end of the barrel and having a vent affording communication between the bore of the barrel and one side of a ring chamber, and firing mechanism including a tiring pin and telescoping charge holding member movable toward the anvil, the arrangement being such that the member causes a marginal portion of the charge to seal off said vent during impact ignition by the pin of an interior portion of the charge.
  • an explosively actuated tool of the type comprising a barrel and a housing therefor relatively slidable from breech open to breech closed position to cock a spring actuated striker in the housing, a spring biased sear yieldably mounted in the striker, an action movable in the housing to carry tiring mechanism between a cocked position determined by an effective engagement of the Sear with the action and into cooperative relation with the breech end of the barrel when in said closed position, a trigger mounted in the housing for disengaging the sear from its effective engagement with the action when cocked to cause the striker to actuate said firing mechanism, and means releasably interconnecting the barrel and action, said means being effective during relative opening movement of the barrel and housing to reset the sear in the action and then release the barrel ⁇ from the action.
  • an explosively actuated tool of the type comprising a barrel and a housing therefor relatively slidable from breech open to breech closed position to cock a spring actuated striker in the housing, a spring biased sear yieldably mounted in the striker, an action movable in the housing to carry tiring mechanism between a cocked position determined by an effective engagement of the sear with the action and into cooperative relation with the breech end of the barrel when in said closed position, , a trigger mounted in the housing for discngaging the sear from its effective engagement with the action when cocked to cause the striker to actuate said firing mechanism, and means releasably interconnecting the barrel and action, said means being effective during relative opening movement of the barr-el and housing to reset the sear in the action and then release the barrel from the action, and effective during relative closing movement of the barrel and housing to reconnect said barrel whereby the action and the reset sear may be moved into cocked relation to the trigger.
  • said releasable interconnecting means includes at least one locking lever pivotally related to one of the barrel and the action, and means formed on the housing for rendering the locking lever effective or non-effective depending on the direction of the relative position of the barrel with respect to the housing.
  • an explosively actuated tool of the type comprising a barrel axially slidable in a housing, an anvil carried by the barrel at its breech end, an action slidable in the housing, means releasably interconnecting the action to the breech end of the barrel, said interconnecting means being adapted to be released by relative breech opening movement of the barrel and housing and reconnected by their relative closing movement, firing mechanism movably carried by the action for impacting a charge against said anvil, means for operating said tiring mechanism including a spring pressed striker movable in the action and arranged to be energized by relatively moving the barrel and housing into breech closed relation, a trigger pivoted to the housing, a spring pressed scar in the striker engageable with a portion of the action to hold the striker energized when the breech is closed, the Sear being releasable from said action portion by operation of the trigger for actuating the tiring mechanism, and means in the housing for thereafter restraining the
  • an action in the housing and releasably connected to the barrel for carrying firing mechanism toward and from operative relation to said barrel a striker slidably mounted in the action, a spring acting on the striker and energizable by the relative closing movement of the barrel and housing, a trigger releasable sear engageable with a part of the action in one position to hold said striker and spring cocked when the barrel is in closed position, means, operative after the trigger has released the sear partly to deenergize the spring and cause the firing mechanism to be operated by said striker, responsive to relative barrel movement toward breech open position for reengaging the sear with said part of the action to thereafter permit disconnection of the action from the barrel, and means on the housing for retaining the action therein when the barrel is dis.
  • a tool as set forth in claim 8 wherein means releasably connecting the breech end of the barrel and an adjacent end of the action is adapted to be disconnected by relative breech opening movement of the barrel and housing, and to be connected by their relative closing movement.
  • a tubular action in the housing mounted for sliding in coaxial relation to the barrel bore and having diametrically opposed first and second slots
  • firing mechanism carried by the action, said mechanism including a ring pin for impacting a charge conned between the breech end of the barrel bore and a telescoping breech end of the action, a spring-pressed striker slidable axially in the action, a spring pressed sear transversely disposed in the striker and having a first end engageable in said first slot in the action to hold the striker cocked, a trigger movably mounted on the housing both to release the iirst end of the sear from said rst slot to enable the striker to cause the pin to impact said charge and to move a second end of the sear into said second slot in the action, means releasably interconnecting the breech end of the
  • an action coaxially slidable in the housing for carrying firing mechanism into and out of cooperative relation to the breech end of the barrel when in breech closed position, a spring pressed striker operable in the housing for actuating said firing mechanism, sear means carried by the striker and yieldably urged into a slot in the action, a trigger on the housing movable to release the sear means from the action slot to operate said striker when the tool is cocked,
  • an anvil mounted in the breech end of the barrel and forming one side of a firing chamber having exhaust connection with the bore of said barrel, said anvil being formed with arcuate slots having opposed convex exhaust surfaces, a spring pressed action slidable in the housing coaxially with said barrel bore, a sleeve mounted in one of the action and the barrel and extending toward the other of the barrel and the action for receiving a charge to be exploded against said anvil, and ring mechanism carried by the action and including a ring pin extending in the sleeve to confine said charge in said firing chamber prior to and during ignition in a position to block said exhaust connection.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US593144A 1966-07-12 1966-11-09 Power devices employing impact ignited low explosive Expired - Lifetime US3469757A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US56465466A 1966-07-12 1966-07-12
US59314466A 1966-11-09 1966-11-09

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US3469757A true US3469757A (en) 1969-09-30

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US593144A Expired - Lifetime US3469757A (en) 1966-07-12 1966-11-09 Power devices employing impact ignited low explosive

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US (1) US3469757A (es)
BE (1) BE724205A (es)
DE (1) DE1628013B2 (es)
DK (1) DK134428B (es)
ES (1) ES343660A1 (es)
GB (1) GB1186407A (es)
SE (1) SE339815B (es)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3534895A (en) * 1968-08-15 1970-10-20 Olin Corp Powder-actuated tool
US3575332A (en) * 1968-05-29 1971-04-20 Olin Mathieson Barrel retention means for power-actuated tools
US4037770A (en) * 1975-06-27 1977-07-26 Olin Corporation Tool using caseless ammunition
US4218005A (en) * 1979-07-30 1980-08-19 Olin Corporation Baffled venting of gas from a powder actuated tool
US5170922A (en) * 1990-07-17 1992-12-15 Hilti Aktiengesellschaft Powder charge operated setting tool
US20100139940A1 (en) * 2008-12-09 2010-06-10 Sp Air Kabushiki Kaisha Hammer with vibration reduction mechanism

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2697830A (en) * 1949-12-29 1954-12-28 Powder Power Tool Corp Means to control the effective force of the expanding gases on a fastener, in explosively actuated fastener driving implements
US2731636A (en) * 1952-08-20 1956-01-24 Prospection & D Inv S Tech Spi Improvements in explosively actuated fastener driving tools
US2804620A (en) * 1951-12-06 1957-09-03 Ben Weingart Gun for driving fasteners and the like
US3168744A (en) * 1963-02-01 1965-02-09 Omark Industries Inc Explosively-actuated stud-driving tool
US3235154A (en) * 1963-06-28 1966-02-15 Star Expansion Ind Corp Piston tool
US3323705A (en) * 1965-08-20 1967-06-06 Impex Essen Vertrieb Cartridge-operated stud-setting device for studs of different lengths

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2697830A (en) * 1949-12-29 1954-12-28 Powder Power Tool Corp Means to control the effective force of the expanding gases on a fastener, in explosively actuated fastener driving implements
US2804620A (en) * 1951-12-06 1957-09-03 Ben Weingart Gun for driving fasteners and the like
US2731636A (en) * 1952-08-20 1956-01-24 Prospection & D Inv S Tech Spi Improvements in explosively actuated fastener driving tools
US3168744A (en) * 1963-02-01 1965-02-09 Omark Industries Inc Explosively-actuated stud-driving tool
US3235154A (en) * 1963-06-28 1966-02-15 Star Expansion Ind Corp Piston tool
US3323705A (en) * 1965-08-20 1967-06-06 Impex Essen Vertrieb Cartridge-operated stud-setting device for studs of different lengths

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3575332A (en) * 1968-05-29 1971-04-20 Olin Mathieson Barrel retention means for power-actuated tools
US3534895A (en) * 1968-08-15 1970-10-20 Olin Corp Powder-actuated tool
US4037770A (en) * 1975-06-27 1977-07-26 Olin Corporation Tool using caseless ammunition
US4218005A (en) * 1979-07-30 1980-08-19 Olin Corporation Baffled venting of gas from a powder actuated tool
US5170922A (en) * 1990-07-17 1992-12-15 Hilti Aktiengesellschaft Powder charge operated setting tool
AU643804B2 (en) * 1990-07-17 1993-11-25 Hilti Aktiengesellschaft Powder-operated setting machine
US20100139940A1 (en) * 2008-12-09 2010-06-10 Sp Air Kabushiki Kaisha Hammer with vibration reduction mechanism
US8240394B2 (en) * 2008-12-09 2012-08-14 Sp Air Kabushiki Kaisha Hammer with vibration reduction mechanism

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DE1628013B2 (de) 1977-06-08
DK134428B (da) 1976-11-08
GB1186407A (en) 1970-04-02
BE724205A (es) 1969-05-02
DK134428C (es) 1977-04-12
ES343660A1 (es) 1968-09-01
SE339815B (es) 1971-10-18
DE1628013A1 (de) 1971-11-04

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