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US 6,442,848 B1Granted
Coping saw
OwnerEthan Deaninventor
Life of this patent
Estimating the term…
Abstract
A coping saw is provided having two spaced-apart rotary actuators supported by a frame. Two saw-blade sections extend between the two rotary actuators and are intended to singularly engage a work piece. The saw is adapted to contain a drive mechanism which is coupled to a first of the two rotary actuators for causing the saw-blade sections to move in at least one direction. Alternately, the coping saw may be configured to be an attachment for a conventional rotary tool.
Claims64
A mechanized hand-held saw having a continuous loop blade, comprising in combination:
- a housing having a first and second portions interconnected by a bridge defining at least one arc-shaped opening separating said first and second portions, said first and second portions and said bridge contained in a first plane of symmetry and containing a longitudinal axis for said housing;
- a motor disposed in said first portion of said housing, said motor having a shaft extending from at least one end thereof and having an axis contained in said first plane of symmetry;
- a drive pulley mounted in said first portion of said housing to said shaft extending from said at least one end of said motor and configured to receive a portion of the continuous loop blade, said drive pulley contained in a second plane of symmetry different from said first plane of symmetry;
- a carriage disposed in said second portion of said housing and translatable between a first and second positions along a line approximately parallel to said first plane of symmetry;
- and
- a driven pulley mounted on said carriage and generally aligned with said first pulley and configured to receive another portion of the continuous loop blade;
- wherein the continuous loop blade on said drive pulley and said driven pulley provides two sections of the blade which span said arc-shaped opening at two spaced-apart locations and move in opposite directions.
4 more elements
A mechanized hand-held saw, comprising in combination:
- a housing having first and second spaced-apart end portions interconnected together by a bridge defining an arc between said first and second end portions, said first and second end portions and said bridge contained in a first plane of symmetry;
- a motor in said first end portion of said housing and having a shaft extending from at least one end thereof, an axis of said shaft contained in said first plane of symmetry;
- a drive pulley in said first end portion of said housing and mounted to said shaft extending from said at least one end of said motor, said drive pulley contained in a second plane of symmetry different from said first plane of symmetry;
- a carriage in said second end portion of said housing and movable between a first and second positions;
- and
- a driven pulley mounted to said carriage in said second end portion of said housing;
- a continuous loop blade mounted on said drive pulley and said driven pulley providing a first and second sections of blade spanning said arc-shaped opening at spaced-apart locations;
- wherein said first section of said continuous loop blade moves in a direction opposite to that of said second section of said continuous loop blade to provide two cutting sections of blade.
5 more elements
A mechanized, hand-held saw for cutting a work piece, comprising in combination:
- a frame having a first and a second ends;
- a handle rotatably coupled to one of said first and second ends of said frame;
- a drive pulley mounted on a shaft extending from said first end;
- a driven pulley proximate said second end of said frame and translatable between a first and a second position relative to said drive pulley;
- and
- a continuous loop blade extending at least partially around said drive pulley and said driven pulley to provide two exposed sections of said continuous loop blade gap between said drive pulley and said driven pulley wherein either blade maybe used to cut the work piece.
3 more elements
A coping saw, comprising in combination:
- a housing having an intermediate opening separating a first and second end portions;
- a handle rotatably coupled to an end of one of said first and second end portions of said housing;
- a drive pulley mounted in said first end portion;
- a driven pulley mounted in said second end portion;
- and
- a continuous loop blade extending at least partially around said drive pulley and said driven pulley and extending across said intermediate opening to provide two exposed sections of said continuous loop blade movable in opposing directions for cutting the work piece.
3 more elements
A powered saw, comprising:
- a frame having a first end and a second end;
- a handle rotatably coupled to one of said first and second ends of said frame;
- a shaft extending from said first end of said frame and supporting a first of two spaced-apart pulleys;
- a carriage mounted in sliding relationship to said second end of said frame, said carriage having a shaft extending therefrom supporting a second of said two spaced-apart pulleys;
- and
- a continuous loop blade mounted at least partial around said two spaced-apart pulleys.
3 more elements
A powered coping saw, comprising in combination:
- two spaced-apart rotary actuators supported by a frame;
- two saw-blade sections extending between said two spaced-apart rotary actuators;
- a drive mechanism coupled to a first of said two spaced-apart rotary actuators for causing said two saw-blade sections to move in at least one direction;
- and
- a swiveling and tilting handle attached to one end of said frame to be grasped by an operator to permit the operator to rotate and tilt the powered coping saw relative to said swiveling and tilting handle during operation of the powered coping saw.
2 more elements
Dependencies are inferred from the claim text.