S-b Power Tool Company

Martin Feldmann

Vance E Roe

A scotch yoke mechanism for converting rotational movement into reciprocating linear movement and having an adjustable stroke length. The scotch yoke mechanism includes a stroke length toggle eccentrically connected to a cam such that the stroke length toggle may assume one of first and second positions. The first position defines a first stroke length which is shorter than a second stroke length defined by said second position. Rotational movement of the cam causes the stroke length toggle to assume the first position when the cam is rotated in a first direction to assume the second position when the cam is rotated in a second direction opposite the first direction.

Adjustable stroke mechanism for a scotch yoke assembly

An adjustable cutting stroke length is provided by a wobble plate mechanism. A wobble plate mechanism imparts reciprocating linear action to a working end of a reciprocating motorized tool. A drive source is included that has an axially rotatable main drive shaft that is selectively rotatable in one of two opposite directions. The main drive shaft is configured to engage a wobble mechanism that provides the reciprocating linear action to the tool's working end. One of a first stroke and a second stroke is provided to the working end of the tool by the wobble mechanism. When rotation of the main drive shaft occurs in a first direction, the working end is provided with a first stroke. Furthermore, when rotation of the main drive shaft occurs in a second direction, the working end is provided with a second stroke. Elements used for adjusting the stroke length are placed on one axis only.

Adjustable stroke for a reciprocating saw

A power tool has a housing that is surrounded in part by a rubber boot. The housing has an opening through which a fastener connects the housing a component of the housing. The boot has a plug portion formed on the inner surface that fits within the opening to seal the housing. The plug portion can have a seal lip followed by recesses to allow for pressure release.

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Gurnee, IL, United States of America

Martin Feldmann