EP0238917A1 - A device provided with means for fixing it to a support wall - Google Patents

A device provided with means for fixing it to a support wall Download PDF

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Publication number
EP0238917A1
EP0238917A1 EP87103253A EP87103253A EP0238917A1 EP 0238917 A1 EP0238917 A1 EP 0238917A1 EP 87103253 A EP87103253 A EP 87103253A EP 87103253 A EP87103253 A EP 87103253A EP 0238917 A1 EP0238917 A1 EP 0238917A1
Authority
EP
European Patent Office
Prior art keywords
fact
nail
essentially
wall
slidable
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.)
Withdrawn
Application number
EP87103253A
Other languages
German (de)
English (en)
French (fr)
Inventor
Ferdinando Topa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VALSELLA MECCANOTECNICA SpA
Original Assignee
VALSELLA MECCANOTECNICA SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by VALSELLA MECCANOTECNICA SpA filed Critical VALSELLA MECCANOTECNICA SpA
Publication of EP0238917A1 publication Critical patent/EP0238917A1/en
Withdrawn legal-status Critical Current

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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
    • B25C1/12—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting directly on the bolt
    • 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
    • B25C1/188—Arrangements at the forward end of the barrel, e.g. splinter guards, spall minimisers, safety arrangements, silencers, bolt retainers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B22/00—Marine mines, e.g. launched by surface vessels or submarines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/006—Explosive bolts; Explosive actuators

Definitions

  • the present invention relates to a device provided with means for fixing it to a support wall.
  • the device according to the present invention has the purpose of anchoring itself as well as an object connected to it, such as for example an explosive charge, to a wall of a ship or a submerged structure with the maximum possible discretion.
  • an explosive charge to the hull of a ship is effected by means of the use of suitable suction or magnetic systems; the effectiveness of the fixing in this case is not, however, reliable, especially when the surface of the hull is not smooth but has encrustations of various type due for example to the presence of shellfish, or else the fixing cannot be made in that the hull is made of a material other than steel such as light alloy or composite material.
  • the object of the present invention is that of providing a device which can fix itself to a support wall of a structure, preferably a submerged structure, and which is able to effect a secure mechanical connection with the maximum containment of noise or other signals which become manifest during the fixing operations.
  • the said object is achieved with the present invention in that it relates to a fixing device for mechanically connecting itself to a support wall of appropriate material, characterised by the fact that it includes a nail provided with a head and a shank, which can be thrust towards the said wall by the action exerted by gases developed by an explosive cartridge; the said device further including braking means operable, by deforming, to absorb a part of the kinetic energy associated in use with the said nail, in such a way as to retain this latter in a predetermined position in which the head and an adjacent part of the shank are rigidly connected to the body of the said device whilst an end part of the shank projects from the body of the said device to be driven into the said wall without the escape of gases and therefore without noise.
  • the reference numeral 1 generally indicates a device which can be fixed to a support wall 2, such as, for example, the outer wall of a ship or a submerged structure in general.
  • the device 1 has a hollow body 3 of essentially cylindrical structure, which is mechanically coupled with a cylindrical seat 4 formed in a handle 5 which, in a manner not illustrated, extends from the body of an explosive charge also to be fixed to the said wall 2.
  • the body 3 of the device 1 has a head portion 6 of enlarged section which rests on the upper surface of the handle 5, an intermediate portion 7 which is received within the interior of the cylindrical seat 4,and an end portion 8 which extends beyond the handle 5 on the side opposite the head portion 6.
  • the portion 8 is coupled to the handle 5 by means of an annular band 9 fitted around the portion 8 itself, and from which extend a plurality of elastically deformable tongues 10 facing outwardly in the direction of the head portion 6, in such a way as to interfere with the facing surface of the handle 5.
  • a reference peg 11 extending radially and able to cooperate with a radial seat 12 in the handle 5 for the purpose of ensuring correct relative positioning of the body 3 of the device 1 with respect to the said handle 5.
  • the device 1 essentially comprises a nail 15 provided with a head 16 and a shank 17, which can be thrust in the direction of the wall 2 by the action exerted by the gases developed by an explosive cartridge 18.
  • the nail 15 and the cartridge 18 are housed within a cylindrical bore 19 of a barrel 20 and between them there is interposed a seal 21 in the form of a flat disc which is slidable along the barrel 20 and which has the purpose of preventing gases developed by the cartridge 18 from being able to escape past the head 16 of the nail 15 and therefore reduce the effectiveness of the thrust transmitted to the nail itself.
  • the tip of this latter is covered by a cap 22, conveniently made of a plastics material, the purpose of which is that of maintaining the nail 15 correctly positioned with respect to.the bore 19 of the barrel 20.
  • the device 1 further includes a bush 25, close to an outlet opening 24 of the barrel 20, which rests by means of a metal disc 26 on a bottom wall 27 of the body 3 of the device 1.
  • the bush 25 is made of plastically deformable material and, between it and the facing surface of the end portion 8 of the body 3 there is provided an expansion chamber 28 which, in use, is partially occupied by the bush 25 deformed essentially by the head 16 of the nail 15 (see also Figure 2).
  • the object of the bush 25 is therefore that of absorbing, by deformation, a part of the kinetic energy associated in use with the nail 15 in such a way as to retain this latter in a predetermined position in which the head 16 and a part of the shank 17 adjacent to it are rigidly connected to the body 3 of the device 1, whilst an end part of the shank 17 projects from the body 3, after having pierced the disc 26 and the bottom wall 27, to drive itself into the said support wall 2.
  • the barrel 20 is housed within a cylindrical seat 30 presented by the body 3 and defining with this latter a chamber 31 communicating with the internal cylindrical bore of the barrel 20 through a plurality of radial through holes 32 of the barrel 20, essentially at its outlet opening 24.
  • a tubular shutter 34 within which a striker 35 is axially slidable against the action of a coil spring 36; in more detail, the opposite ends of the coil spring 36 cooperate, respectively, with a radial annular projection 37 of the striker 35 and a stop portion 38 of a plug 39 which sealingly closes the top of the body 3 with the interposition of an annular seal 40.
  • the projection 37 of the striker 35 has, on the side facing the barrel 20, a frustoconical surface 42 which cooperates with at least one ball 43 partially housed within an associated radial recess 44 in the shutter 34.
  • a sleeve 46 is axially slidable against the resilient action exerted by a coil spring 47 the opposite end portions of which rest respectively on the sleeve 46 itself and on a surface 48 of the plug 39.
  • the sleeve 46 On the side facing the shutter 34 the sleeve 46 has an annular seat 49 with an essentially hemispherical transverse section which, in the course of the said longitudinal sliding, can line up with the radial recess 44 to receive the ball 43.
  • the axial displacement of the sleeve 46 is controlled by a small piston 51 the axis of which is parallel to the axis of the barrel 20 and which has a threaded end 52 which engages a corresponding threaded hole in the sleeve 46, and an opposite end 53 which projects from the body 3 of the device 1 through the said bottom wall 27.
  • the small piston 51 has a portion 54 of reduced section around which is disposed a toroidal seal 55.
  • the end portion 53 of the small piston 51 further has a radial through hole 57 which is engaged by a cotter pin 58 carrying at one end a ring 59 and defining with this latter a safety mechanism 60 tending to prevent the accidental and unwanted displacement of the small piston 51.
  • the device 1 operates as follows. It is first of all observed that in Figure 1 the device 1 is illustrated in the safety position. In fact, by reason of the cotter pin 58 of the mechanism 60 the piston 51 cannot move upwardly to carry the seat 49 of the sleeve 46 into correspondence with the ball 43. This latter therefore prevents the downward movement of the striker 35.
  • the gases developed by the cartridge 18 cause expulsion of the nail 15 the tip of which traverses the bush 25, pierces the metal disc 26 and the bottom wall 27 of the body 3, driving itself into the wall 2.
  • the gases developed by the cartridge 18 can also flow out into the interior of the chamber 31 so that the pressure exerted by these latter on the head 16 of the nail 15 falls rapidly.
  • the head 16 of this nail deforms part of the bush 25 which is dimensioned in such a way as to retain the said head 16-as well as a portion of the shank 17 adjacent to it. In this way the nail 15 performs the function of a mechanical connection element between the device 1 and the facing wall 2.
  • the correct fixing of the device 1 to the wall 2 is guaranteed by the fact that the activation of the cartridge 18 takes place only when the end 53 of the piston 51 is thrust upwardly by the wall 2 itself and has performed the required translation.
  • the device 1 described above can be modified and varied without by this departing from the present invention.
  • the use of the device 1 to fix an explosive charge to the wall of the hull of a ship must not be considered as limitative: in fact, this device could advantageously be utilised to fix the explosive charge at the base of columns made of reinforced concrete or, indeed, to fix any object to a wall of suitable material.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
EP87103253A 1986-03-25 1987-03-06 A device provided with means for fixing it to a support wall Withdrawn EP0238917A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT6723586 1986-03-25
IT67235/86A IT1189628B (it) 1986-03-25 1986-03-25 Dispositivo dotato di mezzi di ancoraggio ad una parete di sopporto

Publications (1)

Publication Number Publication Date
EP0238917A1 true EP0238917A1 (en) 1987-09-30

Family

ID=11300714

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87103253A Withdrawn EP0238917A1 (en) 1986-03-25 1987-03-06 A device provided with means for fixing it to a support wall

Country Status (3)

Country Link
EP (1) EP0238917A1 (it)
IL (1) IL81980A0 (it)
IT (1) IT1189628B (it)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0330958A1 (de) * 1988-03-03 1989-09-06 HILTI Aktiengesellschaft Pulverkraftbetriebenes Bolzensetzgerät
NO20190225A1 (en) * 2019-02-19 2020-08-20 Blue Logic As A barrel unit, a charging unit, a device, a system and a method for forcing a fastening element into a structure submerged in water

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1503034A1 (de) * 1965-09-18 1969-10-30 Rheinmetall Gmbh Vorrichtung an Bolzensetzgeraeten
US3565312A (en) * 1967-06-29 1971-02-23 Mine Safety Appliances Co Explosively driven stud unit
US4060188A (en) * 1973-06-04 1977-11-29 Aai Corporation Impact nailing arrangement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1503034A1 (de) * 1965-09-18 1969-10-30 Rheinmetall Gmbh Vorrichtung an Bolzensetzgeraeten
US3565312A (en) * 1967-06-29 1971-02-23 Mine Safety Appliances Co Explosively driven stud unit
US4060188A (en) * 1973-06-04 1977-11-29 Aai Corporation Impact nailing arrangement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0330958A1 (de) * 1988-03-03 1989-09-06 HILTI Aktiengesellschaft Pulverkraftbetriebenes Bolzensetzgerät
NO20190225A1 (en) * 2019-02-19 2020-08-20 Blue Logic As A barrel unit, a charging unit, a device, a system and a method for forcing a fastening element into a structure submerged in water
NO345425B1 (en) * 2019-02-19 2021-01-25 Blue Logic As A barrel unit, a charging unit, a device, a system and a method for forcing a fastening element into a structure submerged in water

Also Published As

Publication number Publication date
IL81980A0 (en) 1987-10-20
IT8667235A1 (it) 1987-09-25
IT8667235A0 (it) 1986-03-25
IT1189628B (it) 1988-02-04

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Inventor name: TOPA, FERDINANDO