Anti-rotation drive mechanism for a reciprocating saw

Details Anti-rotation drive mechanism for a reciprocating saw Anti-rotation drive mechanism for a reciprocating saw

2007-01-30

2007-01-30

Payer, Hwei-Siu (Department: 3724)

Cutlery

Cutting tools

Saw

C030S392000, C074S060000, C173S114000

Reexamination Certificate

active

10856015

ABSTRACT:
An anti-rotation reciprocating drive apparatus for a reciprocating saw utilizes a wobble plate assembly that includes a drive shaft and an elongated arm with an interface structure for engaging a spindle. The interface structure has two ball-type interfaces that are concentrically aligned with one another, with the outer one being smaller than the inner one and both engaging a receiver portion of the spindle. The larger ball-type interface causes reciprocating movement of the spindle and the smaller outer interface prevents rotation of the spindle. The contact between the interfaces and the spindle receiver is a single point contact which reduces operating friction, wear of the parts and heat being generated.

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