Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
  • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
  • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
  • B25F5/006—Vibration damping means
• • 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

Definitions

• the present invention relates generally to improvements in portable
• combustion-powered fastener driving tools and specifically to improvements
• Portable combustion-powered tools for use in driving fasteners into
• Such tools incorporate a generally pistol-shaped tool housing
• a fuel cell enclosing a small internal combustion engine that is powered by a fuel cell.
• the engine includes a reciprocating piston with an
• a valve sleeve is axially reciprocable about the cylinder and,
• pressing action also triggers a fuel-metering valve to introduce a specified volume
• the chamber causes the acceleration of the piston/driver blade assembly and the
• the fan motor which is suspended in the tool body, is subjected to an
• combustion-powered tool with an increased resiliency that reduces operationally
• the present suspension system provides an
• the present suspension system includes a motor
• the resilient suspension element includes a plurality of resilient beams connecting
• combustion-powered hand tool having a cylinder head includes a flexible web
• the flexible web includes at
• At least one dampening structure configured for reducing a plurality of acceleration
• the flexible web further includes a
• the beams are configured to
• FIG. 1 is a fragmentary vertical section of a combustion-powered
• FIG. 2 is a top view of the present suspension system
• FIG. 3 is a cross-section of the present suspension system taken
• FIG. 4 is an enlarged fragmentary plan view of the present
• FIG. 5 is a cross-section of a beam member of the present
• cylinder head 16 has a housing 12 including a main power source chamber 14.
• a cylinder head 16 has a housing 12 including a main power source chamber 14.
• a cylinder head 16 has a housing 12 including a main power source chamber 14.
• combustion chamber 20 provides a spark plug port for a spark plug (not
• a fan motor 22 is slidingly suspended within a depending cavity 24 in
• the suspension system 26 includes a
• motor retaining ring 28 defining a space for accepting the motor 22, and an outer
• the outer ring 30 is configured for
• At least one resilient suspension element 32 is
• resilient suspension element 32 is a plurality of resilient beams 34 that are
• the motor retaining ring 28 has a top edge 36 and a bottom edge 38.
• a generally cylindrical sidewall 40 depends from the bottom edge 38 of the
• a bottom of the base 42 is generally planar, but includes a circular
• the lip 46 generally centrally located on the base.
• the lip 46 defines a through-hole
• a chamber 52 for the motor 22 is defined by sidewall 40 and base
• the motor 22 slidably fits into the chamber 52 and is held in place by a pair of
• the retaining ring 28 can have
• the motor retaining structure be unitary.
• the motor retaining structure is preferably manufactured
• retaining ring 28 is generally manufactured by deep drawing, although it is
• the outer ring 30 is radially spaced from the motor
• retaining ring 28 and includes an inwardly curved portion 54 that is configured for
• the outer ring 30 also includes a pair of
• the ears 56 are located directly opposite from each other and
• the ears 56 are configured to be inserted into and removed from a pair
• the outer ring 30 is preferably manufactured from a lightweight,
• cost-effective metal alloy such as steel, and has an approximate thickness of .160".
• outer ring 30 is manufactured by stamping the steel.
• the plurality of resilient beams 34 are
• At least one of the plurality of resilient beams 34 is rectangular in
• cross-section (best seen in FIG. 5), has a thickness of .102", and has a width of
• width of the beams 34 optimizes the effective resiliency of the suspension system
• upper surface 60 of the web 58 are configured to be aligned with the beams on the
• the flexible web 58 is preferably manufactured from Neoprene®
• the rubber material will increase the resiliency of the suspension system 26 and decrease the effect of the acceleration forces
• each of the plurality of beams 34 is
• the beams 34 are preferably arranged such that each of
• the beams forms an angle ⁇ of between 20-40° relative to the retaining ring 28.
• pairs of adjacent beams 34 converge toward the retaining ring 28. It is
• the beams 34 define a plurality of triangular recesses 68 located in a
• portion 70 is formed between the inner wall 64 and the outer wall 66 of the
• the triangular recesses 68 are blind, in
• blind recesses 68 prevents rubber flashings from forming during
• recesses 68 are formed in a triangular shape in the present
• the recesses 68 in the present embodiment are preferably arranged in an offset pattern relative to each
• This offset pattern is a result of the arrangement of the rectangular beams
• the inner wall 64 of the suspension element 32 is configured to
• suspension element 32 is configured to abut an inner edge 74 of the outer ring 30,
• the plurality of beams 34 connect the inner wall 64 to the outer wall
• Neoprene® rubber aids in increasing the resiliency of the system 26 and
• outer wall 66 of the suspension element 32 further includes a pair of ears 78 that
• corresponding ears 56, 78 are preferably located directly opposite and in registry
• cylinder head 16 are available, as are known in the art, and the features of the
• suspension element 32 further defines an
• opening 80 interrupts the groove portion 70 of the suspension element 32
• suspension system 26 because it offsets or balances the loss of suspension element
• the tool 10 experiences a recoil force in the opposite
• the present suspension system 26 accommodates
• An advantage of the present suspension system 26 is an increased
• resilient suspension system 26 is more flexible than prior art suspension systems

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Portable Nailing Machines And Staplers (AREA)
• Springs (AREA)
• Vibration Prevention Devices (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (2)

Family

ID=36950142

Family Applications (1)

Country Status (7)

Families Citing this family (17)

Family Cites Families (10)

• 2005
  • 2005-05-05 US US11/122,353 patent/US7107944B1/en not_active Expired - Lifetime
• 2006
  • 2006-02-14 US US11/353,462 patent/US7140331B1/en not_active Expired - Lifetime
  • 2006-05-03 WO PCT/US2006/016972 patent/WO2006121726A2/en not_active Ceased
  • 2006-05-03 CA CA2736819A patent/CA2736819C/en active Active
  • 2006-05-03 JP JP2008510160A patent/JP5107904B2/ja not_active Expired - Fee Related
  • 2006-05-03 CA CA2607361A patent/CA2607361C/en active Active
  • 2006-05-03 AU AU2006244507A patent/AU2006244507B2/en active Active
  • 2006-05-03 EP EP06758981.2A patent/EP1883502B1/en active Active
  • 2006-05-03 NZ NZ563126A patent/NZ563126A/en unknown
• 2010
  • 2010-09-27 AU AU2010224437A patent/AU2010224437B2/en active Active
• 2012
  • 2012-04-10 JP JP2012089207A patent/JP5443535B2/ja not_active Expired - Fee Related

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