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US 6,282,797 B1Granted
Cutting mechanism for saber saw
AssigneeHitachi Koki Co., Ltd.
InventorsYoshio Osada, Toshihiko Tachibana
Life of this patent
Estimating the term…
Abstract
A saber saw includes a housing. A motor is contained in the housing. A second shaft is rotatably connected to the housing, and is rotated by the motor. A plunger connected to the housing is used for holding a saw blade. The plunger is free to reciprocate. A motion converting mechanism provided between the second shaft and the plunger operates for converting rotation of the second shaft into reciprocation of the plunger. A guide member is connected to the housing, and has a track surface. The plunger is moved along the track surface of the guide member during reciprocation of the plunger.
Claims23
A saber saw comprising:
- a housing;
- a motor contained in the housing:
- a shaft rotatably connected to the housing and being rotated by the motor;
- a plunger connected to the housing for holding a saw blade, the plunger being free to reciprocate;
- a motion converting mechanism provided between the shaft and the plunger for converting rotation of the shaft into reciprocation of the plunger;
- a guide member connected to the housing and having a track surface;
- and
- means connected to the plunger for moving along the track surface of the guide member during reciprocation of the plunger;
- wherein said means comprises a follower member connected to the plunger and being normally separate from the track surface of the guide member, the follower member being brought into contact with the track surface of the guide member by a reaction force from a workpiece.
6 more elements
A saber saw comprising:
- a housing:
- a motor contained in the housing;
- a shaft rotatably connected to the housing and being rotated by the motor:
- a plunger connected to the housing for holding a saw blade, the plunger being free to reciprocate:
- a guide sleeve connected to the housing and supporting the plunger, the guide sleeve being movable in a direction substantially perpendicular to a direction of reciprocation of the plunger;
- a motion converting mechanism provided between the shaft and the plunger for converting rotation of the shaft into reciprocation of the plunger;
- guide members connected to the housing and having respective track surfaces;
- a roller shaft connected to a rear portion of the plunger and extending through the rear portion of the plunger in a direction perpendicular to a direction of reciprocation of the plunger, the roller shaft extending through the guide sleeve;
- and
- rollers respectively connected to two ends of the roller shaft and being normally separate from the respective track surfaces of the guide members, the rollers being brought into contact with selected ones of the respective track surfaces of the guide members by a reaction force from a work piece, the rollers contacting with and moving along the selected ones of the respective track surfaces of the guide members during reciprocation of the plunger.
7 more elements
A saber saw comprising:
- a plunger for holding a saw blade;
- means for reciprocating the plunger along an axis of the plunger;
- an engagement member connected to the plunger;
- and
- first and second guide members having first and second engagement surfaces respectively, the first and second engagement surfaces angularly deviating from the axis of the plunger;
- wherein the engagement member contactedly moves along either the first engagement surface of the first guide member or the second engagement surface of the second guide member during reciprocation of the plunger, and wherein the engagement member is separate from the first engagement surface of the first guide member when moving along the second engagement surface of the second guide member, and is separate from the second engagement surface of the second guide member when moving along the first engagement surface of the first guide member.
3 more elements
A saber saw comprising:
- a plunger for holding a saw blade;
- means for reciprocating the plunger along an axis of the plunger;
- first and second engagement members connected to the plunger;
- and
- first and second guide members having first and second engagement surfaces respectively, the first and second engagement surfaces angularly deviating from the axis of the plunger;
- wherein the first engagement member contacts with and moves along the first engagement surface of the first guide member so that the first engagement member and the first guide member are active during reciprocation of the plunger in a first mode of saber saw operation, and the second engagement member contacts with and moves along the second engagement surface of the second guide member so that the second engagement member and the second guide member are active during reciprocation of the plunger in a second mode of saber saw operation which differs from the first mode.
3 more elements
A saber saw comprising:
- a plunger for holding a saw blade:
- means for reciprocating the plunger along an axis of the plunger;
- an engagement member connected to the plunger;
- and
- first and second guide members having first and second engagement surfaces respectively, the first and second engagement surfaces angularly deviating from the axis of the plunger in opposite directions respectively;
- wherein the engagement member contactedly moves along either the first engagement surface of the first guide member or the second engagement surface of the second guide member during reciprocation of the plunger.
3 more elements
Dependencies are inferred from the claim text.