US2575079A - Explosively driven stud with knockoff head portion - Google Patents

Explosively driven stud with knockoff head portion Download PDF

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US2575079A
US2575079A US92974A US9297449A US2575079A US 2575079 A US2575079 A US 2575079A US 92974 A US92974 A US 92974A US 9297449 A US9297449 A US 9297449A US 2575079 A US2575079 A US 2575079A
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Prior art keywords
stud
head
piston
barrel
shoulder
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Expired - Lifetime
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US92974A
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Temple Robert
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TEMPLE VELOCITY EQUIPMENT Inc
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TEMPLE VELOCITY EQUIPMENT Inc
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Classifications

    • 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
    • B25C1/10—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge
    • B25C1/18—Details and accessories, e.g. splinter guards, spall minimisers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B15/00—Nails; Staples
    • F16B15/02—Nails; Staples with specially-shaped heads, e.g. with enlarged surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/14—Bolts or the like for shooting into concrete constructions, metal walls or the like by means of detonation-operated nailing tools
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/923—Nail, spike or tack having specific head structure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49833—Punching, piercing or reaming part by surface of second part

Definitions

  • a well-designed explosive-actuated tool has a shoulder in the barrel near its loutlet or muzzle for stopping the pistonV that -drives a stud out of thebarrel when an-explosive charge behind -the piston is fired.
  • the principal purpose of the piston is to optimizecoil of the 'tool as much-as pos ⁇ sible. -It does this by striking the shoulder and thus-tending to, ⁇ drive the tool ahead-only a nd after the expanding gases in the Vbarrel attempt to drivethe'rtool backward.
  • the head is made longer than the standard stud head, it is thersame as locating the shoulder too closefto 'the end. of 1 the ⁇ barrel; #in -the-rst case, the piston may become jammedfinfthefopening beyond the shoulder, Awhile in. thefsecond case there will be too much recoil.
  • a stud has an elongated driving head integral with one end of a shank. The opposite end of the shank is pointed.
  • the diameter of the head is reduced expectedl at a ⁇ predeterminedfpo'int Ato weaken it ithere so that the portion of the head between its free end and zits Aweakened point can beknocked 'oil after the fstudlhas been driven into an object by an explosive.;actuatedtool; Theportion of the head remaining "aterY the ⁇ temporary npart has been knockedofi "will form ⁇ theperrnanent head of the stud;
  • aplurality of studs ⁇ having driving heads @of uniform 1engthoan vbe provided with permanentheads having predetermined lengths differing fromloneranother.
  • the barrel I o'f-thedriving tool may be of any suitable form, the one ⁇ shown being part'of the tool disclosed in my'oopending patent application, Serial Number 34,542,'led June-22, 1948, nowPatent 2,479,431, issued -fAugust '116,' 1948.H
  • the barrel is mounted in a barrel .guide lor sleeve 2 and has a threaded rear end screwed into a breechblock 3.
  • the breechblock is provided vwith an axial passage 4, through lwhich a firing pin 5 can be projected.
  • the firent-.end ofthe barrel is formed by a muzzle block I6 providedwith an internal shoulder 'l having anV inner diameter that is slightly less than the mainaxial bore 8 through thel barrel.
  • the rear end of the axial bore is enlarged slightly toreceive va loaded cartridge 9, the rim of which is clamped between thebreechblockand the rear endfo'f the barrel.
  • -Theffront end of the cartridge case is-compressed around a forwardly vtapered rear port-ion ll of a one-piece pistonyas shown inlig. 1 Vand in my copending patent application, Serial Number 43,746, led August l1, 1948, now abandoned.
  • the front end'ofthe case is tapered and ⁇ engages the forwardly convergingsurf-ace of the piston.
  • The'cartridge contains the usual charge of powder that is detonated by the firing pin.
  • connection between the stud and piston preferably is a friction connection, such as is provided b y a snug fit between an axial projection I6 on the front end of the piston driven into an axial opening in the rear end of the stud.
  • This connection not only holds the stud and piston together after the cartridge is red, but it supports the stud in the center of the barrel spaced from the wall of bore 8, because the maximum diameter of the stud is less than that of the piston so that the stud can pass through the muzzle block 6 whose shoulder 1 stops the piston.
  • the rear end'of the shank is enlarged to form a driving head I1 that generally is considerably longer than the head that it is desired the stud should have after it has been driven.
  • the head preferably is circular in cross section, and it is the rear or free end of the head that is provided with theaxial opening in which the projection I6 on the piston is inserted.
  • the stud can be used for fastening various objects together, or it can be driven into a single object and its head used for fastening something to it by providing the head with screw for the purpose of fastening a wooden Stringer like to a concrete foundation 22 or supe port.
  • the washer I8 is employed to increase the effective diameter of the head of the stud, so as to prevent the head from sinking into the wood.V
  • the length of driving head I1 is so related to the height of shoulder 1 above the wood that the stud will come to rest in the wood and concrete just as, or slightly before, the piston strikes the shoulder.
  • the shoulder 1 in the recoiling or rising barrel will strike the piston and thus counteract the recoil. This impact also will release the piston from the head of the stud.
  • studs all having driving heads of the correct length for proper operation of the tool, can be provided with permanent heads shorter than the driving heads and diifering in length from one another to any desired extent. Accordingly, as
  • the diameter of the driving head is reduced, such as by an annular groove 25, at a point spaced from the upper end of the shank such a distance as to provide between that point and the shank a permanent head 26 of the desired length or height.
  • the head is weakened suciently to permit the portion 21 of the head between its free end and the weakened point to be knocked oi readily after the stud has been driven, thereby leaving only the permanent head as shown in Fig. 3.
  • the weakening of the driving head preferably is accomplished by tapering it toward the shank.
  • the height of the permanent head will depend upon the length of the knock-oir portion, which in turn depends upon the location of the groove 25 that weakens the driving head I1.
  • This groove can be located at any point along the driving head. In every case, however, the length of the driving head is the saine so that during driving of the stud objectionable recoil will not occur no r will the piston attempt to squeeze past the arresting shoulder 1 in the muzzle block.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Description

Nov. 13, 1951 R. TEMPLE 2,575,079
EXPLOSIVELY DRIVEN STUD WITH KNOOK OFF HEAD PORTION Filed May 15, 1949 INVENTOR. .Poseer EMP/.5.
Patented Nov. 13, 1951 OFF HEAD PORTIGN i yRober-'t Temple, SWissvale, ple VelocityfEquipment,
Paafassignor to Tem- Inc., Wilmington,-.Del.,
acorporation of Delaware Application May' 13, 1949,- Serial No. 92,974
1 Claim. (CL-85-28) This invention rela-testo ystuds adaptedito -be driven into objects fromexplosive-actuated tools.
A well-designed explosive-actuated tool has a shoulder in the barrel near its loutlet or muzzle for stopping the pistonV that -drives a stud out of thebarrel when an-explosive charge behind -the piston is fired. The principal purpose of the piston is to reducerecoil of the 'tool as much-as pos` sible. -It does this by striking the shoulder and thus-tending to,` drive the tool ahead-only a mment after the expanding gases in the Vbarrel attempt to drivethe'rtool backward. These two forces, acting in opposite directions, substantially counteracteach other sothatthere is veryilittle recoil. Howeverfin'order to obtain'this result, it is'necessar-ythat the toolibedesignedwith the arresting Kshoulder theproper distance fromV the object against whichthe muzzle isheld. If `the shoulder is too close to that object, the stud will come to rest Withoutlthe piston strikingthe-shoul-- der. `This willcause considerable recoil.' On the other hand, if the shoulder is too far from the work, the piston will strike the shoulder with a greatdeal of Yforce because it-will not be stopped bythe stud coming to rest in ithework..A In suchY a case thelpiston is' likely to press `itself into'the opening-beyond the shoulder, as if it were starting to extrud'e through that opening.
It is not difficult-to position the erly for shoulder prop- .a stud of a given size and an penetration linto the objectlintowhich it is tobe driven. =Di-niculty arises, however,l ywhen the length of theheado'f the stud is fchan'ged, be cause v-that'will affect the position ofthe piston relative to the arresting shoulder at the moment the stud comes to rest. Thus, if the-lhead is made shorter than th'e'heador whichrthertool is Ade signed, it Ehasthesame eifecteash makingthe shoulder :too far from the end of the barrel. If the head is made longer than the standard stud head, it is thersame as locating the shoulder too closefto 'the end. of 1 the `barrel; #in -the-rst case, the piston may become jammedfinfthefopening beyond the shoulder, Awhile in. thefsecond case there will be too much recoil.
It is'among the objectsofrthis invention' to provide ,studs oft-he type Aunder discussion which have permanent 'heads of v*different lengths, but with which vthe-driving piston always travelsl substantially the`V same distance through the driving tool barrel.
In accordance with this invention, a stud has an elongated driving head integral with one end of a shank. The opposite end of the shank is pointed. The diameter of the head is reduced expectedl at a `predeterminedfpo'int Ato weaken it ithere so that the portion of the head between its free end and zits Aweakened point can beknocked 'oil after the fstudlhas been driven into an object by an explosive.;actuatedtool; Theportion of the head remaining "aterY the `temporary npart has been knockedofi "will form `theperrnanent head of the stud; Thus, aplurality of studs `having driving heads @of uniform=1engthoan vbe provided with permanentheads having predetermined lengths differing fromloneranother.
The preferred'fembodimentof .the inventionis illustrated. in the accompanying drawings, in whichllig. Vlfis a vertical section through a drivingritool `barrel-and the obects into which the stud, shown 'inHeleVatiOn-,isto be driven'g. 2 is aside view ofthe studaiter it has been driven; Fig is asimilar view of the stud after the upper end ofits driving 'head has been knocked off; and Fig. 4 is a view similar to Fig. 2, showing a stud withftemporaryfand permanent head portions of different lengths than those shown in Fig. 2.
lReferring to' Fig. 1 of the drawings, the barrel I o'f-thedriving tool may be of any suitable form, the one `shown being part'of the tool disclosed in my'oopending patent application, Serial Number 34,542,'led June-22, 1948, nowPatent 2,479,431, issued -fAugust '116,' 1948.H The barrel is mounted in a barrel .guide lor sleeve 2 and has a threaded rear end screwed into a breechblock 3. The breechblock is provided vwith an axial passage 4, through lwhich a firing pin 5 can be projected. The firent-.end ofthe barrel is formed by a muzzle block I6 providedwith an internal shoulder 'l having anV inner diameter that is slightly less than the mainaxial bore 8 through thel barrel. The rear end of the axial bore is enlarged slightly toreceive va loaded cartridge 9, the rim of which is clamped between thebreechblockand the rear endfo'f the barrel. -Theffront end of the cartridge case is-compressed around a forwardly vtapered rear port-ion ll of a one-piece pistonyas shown inlig. 1 Vand in my copending patent application, Serial Number 43,746, led August l1, 1948, now abandoned. Inother words, the front end'ofthe case is tapered and `engages the forwardly convergingsurf-ace of the piston. The front portion 12=-of thev piston is cylindrical and fits -slidably in the barrel 4directly in front of the enlarged rear end voibore 8. f The'cartridge contains the usual charge of powder that is detonated by the firing pin.
Attached to the front of the piston by a separable connection is a metal stud l5 which is to be driven out of the barrel and into the objects that are to be fastened together by the stud. The connection between the stud and piston preferably is a friction connection, such as is provided b y a snug fit between an axial projection I6 on the front end of the piston driven into an axial opening in the rear end of the stud. This connection not only holds the stud and piston together after the cartridge is red, but it supports the stud in the center of the barrel spaced from the wall of bore 8, because the maximum diameter of the stud is less than that of the piston so that the stud can pass through the muzzle block 6 whose shoulder 1 stops the piston.
driven.l The rear end'of the shank is enlarged to form a driving head I1 that generally is considerably longer than the head that it is desired the stud should have after it has been driven. The head preferably is circular in cross section, and it is the rear or free end of the head that is provided with theaxial opening in which the projection I6 on the piston is inserted. After the barrel has been loaded with the stud, a metal washer I8 is inserted in a socket I9 formed in the outer end of the muzzle block. When the barrel is held vertical, the washer can be retained in the socketAby a little grease rst applied to the washer. The washer preferably projects from the socket.
The stud can be used for fastening various objects together, or it can be driven into a single object and its head used for fastening something to it by providing the head with screw for the purpose of fastening a wooden Stringer like to a concrete foundation 22 or supe port. The washer I8 is employed to increase the effective diameter of the head of the stud, so as to prevent the head from sinking into the wood.V
the enlarged portion of the barrel bore. This results in the piston and stud having a high velocity from the moment that they leave the'cartridge. The length of driving head I1 is so related to the height of shoulder 1 above the wood that the stud will come to rest in the wood and concrete just as, or slightly before, the piston strikes the shoulder. At practically the same moment that the tool starts to recoil, the shoulder 1 in the recoiling or rising barrel will strike the piston and thus counteract the recoil. This impact also will release the piston from the head of the stud.
It is a feature of this invention that studs, all having driving heads of the correct length for proper operation of the tool, can be provided with permanent heads shorter than the driving heads and diifering in length from one another to any desired extent. Accordingly, as
shown in Figs. 1 and 2, the diameter of the driving head is reduced, such as by an annular groove 25, at a point spaced from the upper end of the shank such a distance as to provide between that point and the shank a permanent head 26 of the desired length or height. The head is weakened suciently to permit the portion 21 of the head between its free end and the weakened point to be knocked oi readily after the stud has been driven, thereby leaving only the permanent head as shown in Fig. 3. The weakening of the driving head preferably is accomplished by tapering it toward the shank.
As shown in Figs. '2 and 4, the height of the permanent head will depend upon the length of the knock-oir portion, which in turn depends upon the location of the groove 25 that weakens the driving head I1. This groove can be located at any point along the driving head. In every case, however, the length of the driving head is the saine so that during driving of the stud objectionable recoil will not occur no r will the piston attempt to squeeze past the arresting shoulder 1 in the muzzle block.
According to the provisions of the patent statutes, I have explained the principle of my invention and have illustrated and described what I now consider to represent its best embodiment. However, I desire to have it understood that, within the scope of the appended claim, the incically illustrated and described. claim:
The combination with a .driving tool having a barrel containing an explosive-actuated piston near its inner end and a piston-stopping shoul-y der near its outer end, of a stud having an elongated cylindrical driving head formed for temporary connection to said piston and integralwith one end of a shank that a pointed piercing end, the head diameter than the shank and being provided with a peripheral groove at a predetermined point to weaken it, and the diameters of the poris provided with having a greater REFERENCES CITED The following references are of record in the nie of this patent:
UNITED ySTATES PATENTS Number Name Date 120,577 Farrel Nov. 7, 1871 1,696,523 Cochran Dec. 25, 1928 2,050,047 Febrey Aug. 4, 1936 2,405,897
Milone et al. Aug. 13, 1946 the head is thev
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Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2675607A (en) * 1952-06-14 1954-04-20 Remington Arms Co Inc Method of fastening outlet boxes
US2731636A (en) * 1952-08-20 1956-01-24 Prospection & D Inv S Tech Spi Improvements in explosively actuated fastener driving tools
US2767398A (en) * 1955-11-28 1956-10-23 Portable Ind Inc Safety and control ram
US2874603A (en) * 1956-05-25 1959-02-24 William A Boettcher Nail with frangible extension
US2887925A (en) * 1954-06-21 1959-05-26 Olin Mathieson Deformable collar fastener for powder-actuated tools
US2896209A (en) * 1953-05-08 1959-07-28 Hilti Martin Stud driving device
US2898964A (en) * 1953-12-23 1959-08-11 Olin Mathieson Explosively driven stud with split shank locking means
US2914983A (en) * 1953-12-09 1959-12-01 Olin Mathieson Explosively driven fastener having axially collapsible radially expandable locking sleeve
US2944261A (en) * 1954-07-08 1960-07-12 Schulz Method of driving studs into bodies by high pressure gases
US3041616A (en) * 1954-02-17 1962-07-03 Olin Mathieson Fastening apparatus
US3096680A (en) * 1960-06-03 1963-07-09 John E Dudgeon Nail with head removable by twisting
US3239121A (en) * 1963-01-11 1966-03-08 Omark Industries Inc Piston powder actuated tool
US3514026A (en) * 1967-09-01 1970-05-26 Trw Inc Repeating propellant gas powered driving tool
DE1500868B1 (en) * 1966-01-12 1971-10-14 Olin Corp GUIDE SLEEVE FOR BOLT
US3779373A (en) * 1970-08-28 1973-12-18 Hilti Ag Nail holder for a setting device operated by explosive force
US3819101A (en) * 1969-08-01 1974-06-25 Lee Norse Co Apparatus for setting pins in mine roofs
US3902238A (en) * 1973-02-21 1975-09-02 Aai Corp Impact stapling method
US5519973A (en) * 1993-08-17 1996-05-28 H.K. Composites, Inc. Highly insulative connector rods and methods for their manufacture and use in highly insulated composite walls
US5606832A (en) * 1994-04-08 1997-03-04 H. K. Composites, Inc. Connectors used in making highly insulated composite wall structures
US5673525A (en) * 1994-04-08 1997-10-07 H.K. Composites, Inc. Insulating connector rods used in making highly insulated composite wall structures
US5809723A (en) * 1997-07-17 1998-09-22 H.K. Composites, Inc. Multi-prong connectors used in making highly insulated composite wall structures
NL1006348C2 (en) * 1997-06-18 1998-12-21 Wit J H En Zonen De Steel nail and impact tools therefor.
US6138981A (en) * 1998-08-03 2000-10-31 H.K. Composites, Inc. Insulating connectors used to retain forms during the manufacture of composite wall structures
US6511252B1 (en) 1998-09-02 2003-01-28 Chris Andros Device and method for connecting concrete plies in pre-cast concrete wall and ceiling panels
US6854229B2 (en) 2003-05-29 2005-02-15 H.K. Marketing Llc Form tie sleeves for composite action insulated concrete sandwich walls
US20090302088A1 (en) * 2008-06-06 2009-12-10 Black & Decker Inc. Anchor Installation Tool
US20110089218A1 (en) * 2008-06-06 2011-04-21 Aland Santamarina Anchor Installation Tool

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US120577A (en) * 1871-11-07 Improvement in interlocked conical bolts for safes
US1696523A (en) * 1926-02-09 1928-12-25 Raymond H Osbrink Lock nut
US2050047A (en) * 1933-12-29 1936-08-04 American Steel & Wire Co Rail bond installation
US2405897A (en) * 1943-03-31 1946-08-13 Milone Samuel Rivet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US120577A (en) * 1871-11-07 Improvement in interlocked conical bolts for safes
US1696523A (en) * 1926-02-09 1928-12-25 Raymond H Osbrink Lock nut
US2050047A (en) * 1933-12-29 1936-08-04 American Steel & Wire Co Rail bond installation
US2405897A (en) * 1943-03-31 1946-08-13 Milone Samuel Rivet

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2675607A (en) * 1952-06-14 1954-04-20 Remington Arms Co Inc Method of fastening outlet boxes
US2731636A (en) * 1952-08-20 1956-01-24 Prospection & D Inv S Tech Spi Improvements in explosively actuated fastener driving tools
US2896209A (en) * 1953-05-08 1959-07-28 Hilti Martin Stud driving device
US2914983A (en) * 1953-12-09 1959-12-01 Olin Mathieson Explosively driven fastener having axially collapsible radially expandable locking sleeve
US2898964A (en) * 1953-12-23 1959-08-11 Olin Mathieson Explosively driven stud with split shank locking means
US3041616A (en) * 1954-02-17 1962-07-03 Olin Mathieson Fastening apparatus
US2887925A (en) * 1954-06-21 1959-05-26 Olin Mathieson Deformable collar fastener for powder-actuated tools
US2944261A (en) * 1954-07-08 1960-07-12 Schulz Method of driving studs into bodies by high pressure gases
US2767398A (en) * 1955-11-28 1956-10-23 Portable Ind Inc Safety and control ram
US2874603A (en) * 1956-05-25 1959-02-24 William A Boettcher Nail with frangible extension
US3096680A (en) * 1960-06-03 1963-07-09 John E Dudgeon Nail with head removable by twisting
US3239121A (en) * 1963-01-11 1966-03-08 Omark Industries Inc Piston powder actuated tool
DE1500868B1 (en) * 1966-01-12 1971-10-14 Olin Corp GUIDE SLEEVE FOR BOLT
US3514026A (en) * 1967-09-01 1970-05-26 Trw Inc Repeating propellant gas powered driving tool
US3819101A (en) * 1969-08-01 1974-06-25 Lee Norse Co Apparatus for setting pins in mine roofs
US3779373A (en) * 1970-08-28 1973-12-18 Hilti Ag Nail holder for a setting device operated by explosive force
US3902238A (en) * 1973-02-21 1975-09-02 Aai Corp Impact stapling method
US5987834A (en) * 1993-08-17 1999-11-23 H.K. Composites, Inc. Insulating connector rods and their methods of manufacture
US5519973A (en) * 1993-08-17 1996-05-28 H.K. Composites, Inc. Highly insulative connector rods and methods for their manufacture and use in highly insulated composite walls
US5830399A (en) * 1993-08-17 1998-11-03 H. K. Composites, Inc. Methods for manufacturing highly insulative composite wall structures
US5673525A (en) * 1994-04-08 1997-10-07 H.K. Composites, Inc. Insulating connector rods used in making highly insulated composite wall structures
US6112491A (en) * 1994-04-08 2000-09-05 H. K. Composites, Inc. Insulating connector rods and methods for their manufacture
US5606832A (en) * 1994-04-08 1997-03-04 H. K. Composites, Inc. Connectors used in making highly insulated composite wall structures
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