Claims
- 1. In an impact tool means, a working member assembly comprising:
- an elongated working member having at least a pair of axially aligned support portions and a rotary driver portion;
- elongated bearing means adapted to be carried by such impact tool means and cooperable with said working member to supportingly engage said support portions of said working member;
- said bearing means including a pair of bearing portions with each of said bearing portions being formed to supportingly encompass a respective one of said pair of support portions for support of said working member in a manner to permit rotation thereof with respect to said bearing portions;
- and one of said support portions of said working member having a transverse extent greater than the transverse extent of the other of said support portions and being cooperable with the said bearing portion which supportingly encompasses said other support portion to be moveable axially therethrough for removal and insertion of said working member from and into said bearing means.
- 2. A working member assembly as claimed in claim 1 wherein said rotary driver portion includes a transverse extent thereof which is greater than the transverse extent of said other support portion; and said rotary driver portion being cooperable with the said bearing portion which supports said other support portion to be moveable axially therethrough for removal and insertion of said working member from and into said bearing means.
- 3. A working member assembly as claimed in claim 2 wherein said support portions are generally cylindrical and said one support portion has a diameter larger than the diameter of said other support portion.
- 4. A working member assembly as claimed in claim 2 wherein said rotary driver portion includes a plurality of circumferentially spaced splines and said splines include a transverse extent which is greater than said transverse extent of said other support portion.
- 5. A working member assembly as claimed in claim 3 wherein said bearing portions include generally cylindrical bearing surface areas engagable with the respective said support portions to axially rotatably support said working member for rotation with respect to said bearing means.
- 6. A working member assembly as claimed in claim 5 wherein said one support portion includes a plurality of circumferentially spaced support lands and intervening grooves and the diameter of said one support portion is the outer diameter of said lands.
- 7. A working member assembly as claimed in claim 6 wherein said cylindrical bearing surface area engaging said other support portion is of a diameter smaller than said diameter of said one support portion.
- 8. In an elongated striking bar for use in an open-ended impact tool and including at least a pair of axially spaced apart support portions and a rotary driver portion, and wherein said striking bar is adapted to be supported with respect to such impact tool by insertion of said striking bar into the open end of such impact tool such that at least said pair of support portions engage a respective pair of bearing means carried by such impact tool, the improvement comprising:
- one of said support portions of said striking bar being adapted to be received, during such insertion of said striking bar into such impact tool, into supporting engagement with one of such bearing means for rotation with respect thereto after being passed through an interior space defined and encompassed by the other of such bearing means, and said one support portion of said striking bar having a transverse extent greater than the maximum transverse extent of the other of said support portions.
- 9. A striking bar as claimed in claim 8 wherein said rotary driver portion is located axially intermediate said pair of support portions.
- 10. A striking bar as claimed in claim 8 wherein said support portions include generally cylindrical means coaxial with respect to the axis of said striking bar and said transverse extent of each of said support portions is the outer diameter of said generally cylindrical means.
- 11. A striking bar as claimed in claim 10 wherein said one support portion includes a plurality of circumferentially spaced, radially outwardly projecting lands.
- 12. A striking bar as claimed in claim 8 wherein said other support portion is adapted to be received into supporting engagement with said other bearing means for rotation with respect thereto.
Parent Case Info
This is a continuation of application Ser. No. 722,920, filed Sept. 13, 1976.
US Referenced Citations (7)
Continuations (1)
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Number |
Date |
Country |
Parent |
722920 |
Sep 1976 |
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