Progressive force cut path drive mechanism for a reciprocating tool
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United States of America Patent
Stats
-
Jul 31, 2012
Grant Date -
Apr 29, 2010
app pub date -
Oct 23, 2008
filing date -
Oct 23, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A drive apparatus for a reciprocating tool includes a housing, a rotatable drive shaft assembly located in the housing, and an elongated plunger located in the housing for a reciprocating motion. The plunger has a front end portion for attaching a cutting blade thereto. The drive apparatus also includes a rotary joint elongated rocker having a lower end portion with a lower pivot connection to the housing and an upper end with an upper pivot connection to a mid portion of the plunger. A wobble plate interface is operatively connected to the drive shaft assembly, a lower portion having an effective lower pivot connection. The wobble plate interface also has an upper pivot connection to a rear portion of the plunger and configured to reciprocate the plunger generally in its lengthwise direction during alternating cutting and return strokes.
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