WO2018128765A1 - Appareil d'impact - Google Patents

Appareil d'impact Download PDF

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Publication number
WO2018128765A1
WO2018128765A1 PCT/US2017/066256 US2017066256W WO2018128765A1 WO 2018128765 A1 WO2018128765 A1 WO 2018128765A1 US 2017066256 W US2017066256 W US 2017066256W WO 2018128765 A1 WO2018128765 A1 WO 2018128765A1
Authority
WO
WIPO (PCT)
Prior art keywords
spring
anvil assembly
impacting
spring anvil
drive mechanism
Prior art date
Application number
PCT/US2017/066256
Other languages
English (en)
Inventor
John Witzigreuter
Christopher Pedicini
Original Assignee
Tricord Solutions, Inc.
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
Priority claimed from US15/402,198 external-priority patent/US10751865B2/en
Application filed by Tricord Solutions, Inc. filed Critical Tricord Solutions, Inc.
Priority to AU2017390178A priority Critical patent/AU2017390178B2/en
Priority to EP17890017.1A priority patent/EP3565689A4/fr
Priority to CN201780087886.XA priority patent/CN110678298B/zh
Priority to CA3049715A priority patent/CA3049715C/fr
Publication of WO2018128765A1 publication Critical patent/WO2018128765A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • E02D7/08—Drop drivers with free-falling hammer
    • 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
    • B25C1/04—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure
    • 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
    • B25C1/04—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure
    • B25C1/047—Mechanical details
    • 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
    • B25C1/06—Hand-held nailing tools; Nail feeding devices operated by electric power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D1/00—Hand hammers; Hammer heads of special shape or materials
    • B25D1/16—Hand hammers; Hammer heads of special shape or materials having the impacting head in the form of a sleeve slidable on a shaft, e.g. hammers for driving a valve or draw-off tube into a barrel
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H17/00—Fencing, e.g. fences, enclosures, corrals
    • E04H17/26—Devices for erecting or removing fences
    • E04H17/261—Devices for erecting or removing fences for post and wire handling
    • E04H17/263—Devices for erecting or removing fences for post and wire handling for erecting posts

Definitions

  • the present disclosure relates to impacting apparatuses, and, more particularly, to such impacting apparatus for driving fence posts, breaking concrete, setting rivets, driving nails and otherwise performing multiple continuous impacts.
  • Impacting apparatuses also referred to herein as a "driver,” "gun” or
  • device known in the art often may be configured for an entirely portable operation.
  • Contractors commonly use power-assisted devices for impacting a surface and/or driving an object into a substrate.
  • These power-assisted apparatuses can be portable (i.e., not connected or tethered to an air compressor or wall outlet) or non-portable.
  • a common impacting apparatus uses a source of compressed air to actuate a guide assembly to push an object into a substrate. For applications in which portability is not required, this is a very functional system and allows rapid delivery of fasteners for quick assembly.
  • a disadvantage is that it does however require that the user purchase an air compressor and associated air-lines in order to use this system.
  • a further disadvantage is the inconvenience of the device being tethered (through an air hose) to an air compressor.
  • a final commercially available solution is to use a flywheel mechanism and clutch the flywheel to an anvil that impacts a substrate.
  • This tool is capable of impacting very quickly.
  • the primary drawback to such a tool is the large weight and size as compared to pneumatic counterparts. Additionally, the drive mechanism is very complicated, which gives a high retail cost.
  • the prior art teaches several additional ways of impacting.
  • the first technique is based on a multiple impact design.
  • a motor or other power source is connected to an impact anvil through either a lost motion coupling or other device. This allows the power source to make multiple impacts on an object to drive it into a substrate.
  • multiple impact designs are not very efficient because of the constant motion reversal and the limited operator production speed.
  • a second design includes the use of potential energy storage mechanisms (in the form of a mechanical spring).
  • the spring is cocked (or activated) through an electric motor. Once the spring is sufficiently compressed, the energy is released from the spring into a striker, thus impacting the striker and/or a substrate.
  • drawbacks exist to this design. These include the need for a complex system of compressing and controlling the spring, and in order to store sufficient energy, the spring must be very heavy and bulky. Additionally, the spring suffers from fatigue, which gives the tool a very short life. Finally, metal springs must move a significant amount of mass in order to decompress, and the result is that these low-speed impacting devices result in a high reactionary force on the user.
  • an air spring has been used to replace the mechanical spring, i.e., compressing air within a guide assembly and then releasing the compressed air by use of a gear drive.
  • One particularly troublesome issue with this design is the safety hazard in the event that the anvil jams on the downward stroke and the operator tries to clear the j am, he is subj ect to the full force of the anvil, since the anvil is predisposed to the down position in all of these types of devices.
  • a further disadvantage to the air spring results from the need to have the ratcheting mechanism as part of the anvil drive. This mechanism adds weight and causes significant problems in controlling the drive action since the weight must be stopped at the end of the stroke.
  • a third means for impacting includes the use of flywheels as energy storage means.
  • the flywheels are used to launch a hammering anvil that impacts a substrate.
  • One maj or drawback to this design is the problem of coupling the flywheel to the driving anvil.
  • This prior art teaches the use of a friction clutching mechanism that is both complicated, heavy and subj ect to wear. Further limiting this approach is the difficulty in controlling the energy— the mechanism requires enough energy to impact effectively, but retains significant energy in the flywheel after the drive is complete. This further increases the design complexity and size of such prior art devices.
  • the fuel powered mechanisms have loud combustion reports and combustion fumes.
  • the multiple impact devices are fatiguing and are noisy.
  • an impacting apparatus which derives its power from an electrical source, preferably rechargeable batteries, and uses a motor to actuate a spring anvil assembly.
  • the spring anvil assembly can include either a mechanical spring or a gas spring that is coupled to a piston.
  • the spring may be comprised of titanium, carbon fiber, an elastomer or steel, for example.
  • the piston commences movement and accelerates the spring anvil assembly (which assembly includes an anvil and a spring coupled to a piston.)
  • the contact of the spring piston with a pusher plate causes the spring anvil assembly to move, and in an embodiment, the movement is toward and into contact with a substrate or object to be driven into a substrate such that the anvil impacts the substrate or drives the object into the substrate.
  • a post, fastener or other driven object can position the spring anvil assembly for the commencement of another operating cycle.
  • the present impacting apparatus is able to generate sufficient energy to impact a substrate and/or drive an object with only a small increase in pressure in the gas spring. This unexpectedly increased the efficiency of the apparatus since heat of compression is a significant source of energy inefficiency. (This aspect also reduces the size of the apparatus as the stroke of the gas spring piston is significantly less than the stroke of the anvil and anvil assembly).
  • the impacting/driving cycle of the apparatus disclosed herein may start with an electrical signal, after which a circuit connects a motor to the electrical power source.
  • the motor is coupled to the spring anvil assembly through an interrupted drive mechanism, cam, or any other drive mechanism capable of providing for continuous impacting/driving.
  • the mechanism alternatively (1) actuates the piston of the spring anvil assembly and (2) decouples from the piston to allow pressure or other force(s) to act on the spring piston.
  • an interrupted drive mechanism may move the piston to increase potential energy stored within the spring assembly.
  • the mechanism decouples from the piston anvil assembly to allow the accumulated potential energy within the spring assembly to act on and actuate the piston.
  • the piston thereupon moves and causes the spring anvil assembly to move and impact a substrate or drive an object, for example.
  • a spring or other return mechanism is operatively coupled to the spring anvil assembly to return the spring anvil assembly to an initial position after the anvil has impacted a substrate or driven an object.
  • at least one bumper is disposed within or outside of the spring anvil assembly to reduce wear and tear on the spring anvil assembly that may otherwise occur in operation of the apparatus.
  • the stroke or movement of the piston of the spring anvil assembly is less than one half the total movement of the spring anvil assembly. Further preferred is that the movement of the spring piston results in a volume decrease within the gas spring of less than 20% of the initial volume, thus reducing losses from heat of compression.
  • a sensor and a control circuit are provided for determining at least one position of the gas spring and/or anvil to enable the proper timing for stopping the cycle of the apparatus and/or to detect a jam condition of the apparatus.
  • Figure 1 shows a cutaway view of an impacting apparatus, in accordance with an exemplary embodiment of the present disclosure
  • Figure 2 shows another cutaway view of an impacting apparatus in accordance with an exemplary embodiment of the present disclosure
  • Figure 3 shows an operational phase of an impacting apparatus, wherein the drive mechanism has not yet engaged the spring anvil assembly, in accordance with an exemplary embodiment of the present disclosure
  • Figure 4 shows another operational phase of an impacting apparatus, wherein the drive mechanism has engaged the spring anvil assembly in accordance, with an exemplary embodiment of the present disclosure
  • Figure 5 shows another operational phase of an impacting apparatus, wherein the drive mechanism has engaged the spring anvil assembly, and is nearly to the point where it will again disengage the spring anvil assembly, in accordance with an exemplary embodiment of the present disclosure
  • Figure 6 shows an operational phase of an impacting apparatus, wherein the drive mechanism has disengaged the spring anvil assembly and the spring anvil assembly is in free flight, in accordance with an exemplary embodiment of the present disclosure
  • Figure 7 shows a cutaway view of a spring anvil assembly, in accordance with an exemplary embodiment of the present disclosure.
  • the present disclosure provides for an impacting apparatus 1000.
  • the apparatus comprises a power source, a motor 1, a control circuit 2, , a drive mechanism 4, a spring anvil assembly, a striker 5, a pusher plate 6, and at least one bumper 7.
  • the spring anvil assembly comprises a gas spring 10 and an anvil 13.
  • the gas spring 10 includes a piston 8 that is at least partially disposed within the spring anvil assembly.
  • the spring anvil assembly is operatively coupled to the drive mechanism 4.
  • a bumper 9 is preferably disposed within the gas spring to absorb a portion of the force of impact of the piston.
  • the gas spring 10 may further comprise a nose portion (which nose portion may be a part of or coupled to the piston) and which nose portion makes operative contact with the pusher plate 6 during a portion of the operating cycle.
  • the spring anvil assembly comprises a spring without a piston (such as, but not limited to, a mechanical spring or an elastomer) and an anvil 13.
  • the drive mechanism may comprise, in an embodiment, a rack gear with intervals of teeth and no teeth, or in an embodiment, a cam driven mechanism as shown in the figures.
  • the drive mechanism is configured to permit effectively instantaneous transition from when the gear teeth are engaged to when there is no tooth engagement.
  • the drive mechanism is operatively coupled to the spring anvil assembly, such that the drive mechanism may alternate in actuating the spring anvil assembly, thereby actuating the piston (when the gear teeth or cam is engaged, for example) or, in another embodiment, actuating and compressing the spring of the spring anvil assembly, and in withholding a drive force on the spring anvil assembly such that other forces are able to act on and actuate the piston or spring.
  • the drive mechanism engages the spring anvil assembly and actuates the piston by pushing it against the pusher plate to store potential energy within the gas spring.
  • the initial pressure (before the drive mechanism actuates the piston) within the gas spring assembly is at least 40 psia.
  • the configuration and design of the gas spring are such that the pressure increase during the piston movement is less than 30% of the initial pressure, thus yielding a more constant torque to the motor that improves the motor efficiency.
  • the drive mechanism engages the spring anvil assembly and actuates the spring by pushing it against the pusher plate or by otherwise compressing the spring to store potential energy within the spring.
  • the drive mechanism thereafter disengages the spring anvil assembly, allowing pressure or other forces to act on the piston and/or spring and cause the piston and/or spring to separate and launch the spring anvil away from the pusher plate and drive the anvil away from the pusher plate.
  • the drive mechanism is tuned to prevent further engagement until after the spring anvil assembly has returned to an approximate starting position.
  • the drive mechanism may thereafter again act on the spring anvil assembly to again store potential energy within the gas spring and/or spring and may thereafter again temporarily cease to act on the spring anvil assembly to allow potential energy to instead act on the piston and/or spring that has been pushing against the pusher plate (or which spring has been compressed) to launch the spring anvil assembly.
  • the drive mechanism is preferably configured to allow for continuous impacting, by way of the cam, for example (as shown in the figures), to provide for such continuous impacting.
  • the stroke of the piston is less than the stroke of the spring anvil assembly.
  • the spring anvil assembly is operatively coupled to the gas spring, such as to the piston or nose portion such that when the spring anvil assembly is released under pressure the force from the piston is imparted onto the spring anvil assembly, causing the spring anvil assembly to move in a direction and to release (or be launched) away from the pusher plate and impact a striker of the apparatus, which striker transmits the force of the impact to an impact target, such as a post, nail, or rivet, for example.
  • the spring anvil assembly comprises a spring without a piston
  • the force from the spring is imparter onto the spring anvil assembly, causing the spring anvil assembly to move in a direction and to release (or be launched) away from the pusher plate and impact a striker of the apparatus, which striker transmits the force of the impact to an impact target, such as a post, nail, or rivet, for example.
  • the striker facilitates positioning of the impact target so that the impact target can receive the force of the striker and so that the impact target can remain in a position to receive such force when the apparatus is providing multiple or continuous impacts.
  • the ratio of the thrown mass to the moving mass within the gas spring was important to the efficiency of the apparatus. It is preferred to have the thrown mass (which in this case is the anvil assembly) greater than 50% of the total moving mass (which is the anvil assembly mass + the gas spring moving mass), and more preferable to have the anvil assembly mass at least 60% of the total moving mass. This allows the present disclosure to have increased efficiency in transferring the potential energy into driving energy on the object or substrate.
  • the mass of the spring anvil assembly is two to four times the mass of the gas spring.
  • the gas spring piston has a mass of 90 grams and the anvil has a mass of 250 grams.
  • the gas spring piston is hollowed out to lighten its mass and further may be constructed of lightweight materials such as hard anodized aluminum, plastics or the like.
  • the spring anvil assembly may be operatively coupled to a guide, shaft, or other structure that limits its range of motion.
  • At least one bumper is disposed on the apparatus for absorbing a portion of the force of impact of the piston within the gas spring and/or against the anvil, to reduce wear and tear on the components of the apparatus.
  • the at least one bumper may be of an elastic material, and may be disposed on the apparatus at any position where it is capable of absorbing a portion of the force of impact by the piston or the anvil.
  • the spring anvil assembly may further comprise a return mechanism 16 to enable the spring anvil assembly to return to its initial position.
  • the return mechanism is a return spring that is disposed on or in the guide or shaft that constrains the spring anvil assembly, which retum spring would be disposed nearer the end or portion of anvil that is distal to the gas spring.
  • the spring may be disposed with respect to the spring anvil assembly such that motion of the anvil toward an impact target also causes the spring to compress, and after the spring anvil assembly has reached the end of its driven stroke, the compressed spring decompresses to actuate the spring anvil assembly to the spring anvil assemblies earlier or original position.
  • An alternate embodiment for returning the spring anvil assembly to its cycle start position is to use the force of the impact target (such as a post, spike, nail or rivet) to bring the spring anvil assembly into its starting position.
  • the return mechanism described above is omitted, and the spring anvil assembly is disposed in the down position (i.e., distal to the pusher plate) and rests atop the striker, before the operational cycle commences.
  • the operational cycle is unable to commence, which improves the safety profile of the apparatus.
  • the striker is placed into contact with the impact target, and the weight of the apparatus or force applied to the tool by the user, causes the striker and the spring anvil assembly to be moved and disposed proximate to the pusher plate (i.e., the starting position of operational cycle, where the spring anvil assembly may be acted upon by the drive mechanism.)
  • the striker can also be spring loaded away from the spring anvil assembly further adding to the safety of the tool.
  • This embodiment has several advantages. The first is that it would make it less likely to dry fire the apparatus as the apparatus must be in contact with the impact target to be able to operate. The second advantage is that no return mechanism would be required to reset the mechanism, thus eliminating an item that may otherwise wear during use of the apparatus.
  • the impact target is utilized to move (push) the spring anvil assembly into position against the pusher plate.
  • a stop within the apparatus disposed on or in the guide or shaft that constrains the spring anvil assembly, for example
  • the impact target or striker may also be provided for preventing the impact target or striker from moving with the spring anvil assembly as it is energized. In this position the impact target would rest inside or against the striker and the striker would rest against a stop, preventing the impact target from moving up with the spring anvil assembly when the piston is being actuated to store potential energy within the gas spring. This allows the spring anvil assembly to still release from the pusher plate and reengage the striker during the drive portion of the operational cycle.
  • the apparatus further comprises a power adjustment mechanism for adjusting the force of impact by the apparatus.
  • the power adjustment mechanism comprises adjustable positioning of the pusher plate with respect to the spring anvil assembly. By changing such positioning of the pusher plate, the amount of compression of the spring of the spring anvil assembly can be adjusted, and force of impact is consequently adjusted by changing the amount of compression of the spring.
  • the position of the pusher plate may be adjusted by way of a screw that may be actuated to reposition the pusher plate or by disposing the pusher plate on a slider, which slider may allow the pusher plate to be repositioned.
  • the power adjustment mechanism comprises an adjustment mechanism within the spring anvil assembly that allows changing the compression of the spring of the spring anvil assembly.
  • the gas spring is capable of generating a relatively high amount of force in a small amount of space such that the size of the apparatus may be smaller than other impacting apparatuses. Further, because of the relatively small increase from the initial pressure in the gas spring to the maximum pressure, the motor of the apparatus is not significantly overworked or overtorqued, thus leading to a longer useful life of the apparatus. Furthermore, the apparatus disclosed herein has an improved safety profile over prior art impacting devices. For example, the apparatus disclosed herein has an improved recoil force as opposed to the prior art.
  • anvil/anvil assembly of the present disclosure is a free traveling mass and, as such, during the course of the driving of an object or striking a substrate, therefore does not put a reactionary force on the operator.
  • air pressure on the piston and anvil assembly acts during the entire drive and at the end of the stroke can result in significant recoil to the operator.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Paleontology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

La présente invention concerne un appareil d'impact comprenant un ensemble enclume à ressort et un mécanisme d'entraînement qui vient en prise en alternance avec l'ensemble enclume à ressort pour actionner l'ensemble enclume à ressort pour stocker de l'énergie potentielle dans l'ensemble enclume à ressort, et lequel mécanisme d'entraînement libère en alternance l'ensemble enclume à ressort pour permettre à l'ensemble enclume à ressort de se lancer et d'accélérer vers une cible d'impact pour délivrer une énergie d'impact de l'ensemble enclume à ressort à la cible d'impact. Dans un mode de réalisation, l'ensemble enclume à ressort est sollicité vers une position de départ par la cible d'impact ou le poids de l'appareil. L'ensemble enclume à ressort peut comprendre un ressort à gaz ou un ressort, par exemple. L'appareil est capable de délivrer de multiples impacts à une cible d'impact.
PCT/US2017/066256 2017-01-09 2017-12-14 Appareil d'impact WO2018128765A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2017390178A AU2017390178B2 (en) 2017-01-09 2017-12-14 Impacting apparatus
EP17890017.1A EP3565689A4 (fr) 2017-01-09 2017-12-14 Appareil d'impact
CN201780087886.XA CN110678298B (zh) 2017-01-09 2017-12-14 冲击设备
CA3049715A CA3049715C (fr) 2017-01-09 2017-12-14 Appareil d'impact

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15/402,198 US10751865B2 (en) 2016-01-08 2017-01-09 Impacting apparatus
US15/402,198 2017-01-09

Publications (1)

Publication Number Publication Date
WO2018128765A1 true WO2018128765A1 (fr) 2018-07-12

Family

ID=62791318

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2017/066256 WO2018128765A1 (fr) 2017-01-09 2017-12-14 Appareil d'impact

Country Status (5)

Country Link
EP (1) EP3565689A4 (fr)
CN (1) CN110678298B (fr)
AU (1) AU2017390178B2 (fr)
CA (1) CA3049715C (fr)
WO (1) WO2018128765A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022079495A1 (fr) * 2020-10-13 2022-04-21 Pranil Wasudeo Tiwaskar Marteau de démolition
US11819989B2 (en) 2020-07-07 2023-11-21 Techtronic Cordless Gp Powered fastener driver
US11850714B2 (en) 2021-07-16 2023-12-26 Techtronic Cordless Gp Powered fastener driver

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4146436A4 (fr) * 2020-05-05 2024-06-05 Tricord Solutions Inc Pistolet à agrafe
CN111852174B (zh) * 2020-07-20 2021-12-17 台州市黄岩博涛塑业有限公司 一种利用惯性加速的磁力加热踩踏式围栏板底座

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US7004368B1 (en) * 2004-12-03 2006-02-28 Panrex Industrial Co., Ltd. Nailing gun having improved nail pusher
US20130333904A1 (en) * 2012-06-15 2013-12-19 Hilti Aktiengesellschaft Machine Tool and Control Method
US20140069671A1 (en) * 2007-10-05 2014-03-13 Senco Brands, Inc. Fastener driving tool using a gas spring
US20160096259A1 (en) * 2014-10-07 2016-04-07 Christopher Pedicini Fastener Driving Apparatus
US20160229043A1 (en) * 2015-02-06 2016-08-11 Milwaukee Electric Tool Corporation Gas spring-powered fastener driver

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CN100577367C (zh) * 2006-10-23 2010-01-06 吴纯培 直线冲击装置

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Publication number Priority date Publication date Assignee Title
US7004368B1 (en) * 2004-12-03 2006-02-28 Panrex Industrial Co., Ltd. Nailing gun having improved nail pusher
US20140069671A1 (en) * 2007-10-05 2014-03-13 Senco Brands, Inc. Fastener driving tool using a gas spring
US20130333904A1 (en) * 2012-06-15 2013-12-19 Hilti Aktiengesellschaft Machine Tool and Control Method
US20160096259A1 (en) * 2014-10-07 2016-04-07 Christopher Pedicini Fastener Driving Apparatus
US20160229043A1 (en) * 2015-02-06 2016-08-11 Milwaukee Electric Tool Corporation Gas spring-powered fastener driver

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Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11819989B2 (en) 2020-07-07 2023-11-21 Techtronic Cordless Gp Powered fastener driver
WO2022079495A1 (fr) * 2020-10-13 2022-04-21 Pranil Wasudeo Tiwaskar Marteau de démolition
US11850714B2 (en) 2021-07-16 2023-12-26 Techtronic Cordless Gp Powered fastener driver

Also Published As

Publication number Publication date
CA3049715A1 (fr) 2018-07-12
CA3049715C (fr) 2022-10-04
AU2017390178B2 (en) 2024-02-08
EP3565689A1 (fr) 2019-11-13
CN110678298A (zh) 2020-01-10
AU2017390178A1 (en) 2019-07-25
CN110678298B (zh) 2023-05-16
EP3565689A4 (fr) 2020-08-26

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