Portable working machine

Details Portable working machine Portable working machine

2007-01-02

2007-01-02

Peterson, Kenneth E. (Department: 3724)

Cutlery

Cutting tools

Plural cooperating blades

C030S208000

Reexamination Certificate

active

10984312

ABSTRACT:
A portable working machine has a motive power source for producing a rotational motion, a cutting blade mounted to undergo linear reciprocating motion, and a reduction mechanism for reducing a speed of the rotational motion produced by the motive power source. A motion conversion mechanism converts the rotational motion reduced in speed by the reduction mechanism into a linear reciprocating motion of the cutting blade. A case accommodates therein the reduction mechanism and the motion conversion mechanism and has a lower surface. A cover member covers the lower surface of the case. The cover member has a first part connected to the lower surface of the case and a second part contiguous to the first part and extending to underlie a part of the lower surface of the case located below the reduction mechanism with a space defined between the part of the lower surface of the case and the second part of the cover member. An impact-absorbing member is disposed in the space between the part of the lower surface of the case and the second part of the cover member.

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Newton, R.E. Chapter 31, Theory of Shock Isolation. Harris' Shock and Vibration Handbook (5th Edition) Edited by: Harris C.M.; Piersol, A.G. © 2002 McGraw-Hill. pp 31.1-31.3 and 31.8-31.12.
Jones, David. Chapter 37, Applied Damping Treatments. Harris' Shock and Vibration Handbook (5th Edition) Edited by: Harris C.M.; Piersol, A.G. © 2002 McGraw-Hill. pp. 37.1, 37.19.

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