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US 9,283,630 B2Granted
Reciprocating tool
OwnerErik P. Henricksoninventor
Life of this patent
Estimating the term…
Abstract
An arcuate action tool attachment is adapted to receive an input and to convert that input into reciprocating output motion along an arcuate path. The tool may be adapted to be combined with an existing linear reciprocating device or a rotary device, or the tool may comprise a single unit including a linear reciprocating device or a rotary device. The tool may be fitted with one or more curved or arc-shaped accessories, such as saw blades or the like, that reciprocate along the arcuate paths that may have substantially the same radius of curvature as the accessory.
Claims17
A reciprocating tool adapted to reciprocally drive at least one accessory along an arcuate path, said tool comprising:
- a drive input member, said drive input member configured to receive a drive input;
- an arcuate converting mechanism comprising (i) a longitudinally curved rod attached to said drive input member and (ii) an accessory holder attached to said curved rod and movable therewith, wherein said curved rod is movable along an arcuate rod path in an extension stroke and a retraction stroke responsive to movement of said drive input member, whereby said arcuate converting mechanism is operable to convert the drive input into arcuate reciprocating movement of said accessory holder;
- an accessory having an arcuate working surface that curves in the same direction as said longitudinally curved rod, said accessory mounted to said accessory holder and reciprocally movable along an arcuate accessory path via said arcuate converting mechanism, wherein said arcuate working surface and said longitudinally curved rod together extend over an angle of at least about 45 degrees;
- wherein said arcuate rod path is substantially the same in both the extension stroke and the retraction stroke of said curved rod;
- and
- wherein a curvature of said arcuate working surface of said accessory is substantially the same as or substantially parallel to said arcuate rod path, whereby said arcuate working surface traverses an arcuate working surface path that is substantially the same in both the extension stroke and the retraction stroke as said accessory holder reciprocates along said arcuate accessory path.
3 more elements
A reciprocating tool adapted to reciprocally drive an accessory along an arcuate path, said reciprocating tool comprising:
- a drive member that is movable responsive to actuation of said reciprocating tool;
- a longitudinally curved rod having a first end region coupled with said drive member and a second end region at an opposite end of said longitudinally curved rod;
- wherein said longitudinally curved rod is reciprocally movable along an arcuate rod path in an extension stroke and a retraction stroke responsive to movement of said drive member;
- wherein said arcuate rod path is substantially the same in both the extension stroke and the retraction stroke of said longitudinally curved rod;
- an accessory disposed at said second end region of said longitudinally curved rod;
- wherein said accessory comprises an arcuate working surface that curves in the same direction as said longitudinally curved rod, and wherein said arcuate working surface and said longitudinally curved rod together extend over an angle of at least 45 degrees;
- wherein said arcuate working surface of said accessory is reciprocally movable along an arcuate accessory path that is substantially the same in both the extension stroke and the retraction stroke via reciprocal movement of said longitudinally curved rod along said arcuate rod path;
- and
- wherein a curvature of said arcuate working surface of said accessory is at least one of (i) substantially the same as the longitudinal curvature of said longitudinally curved rod and (ii) substantially parallel to the longitudinal curvature of said longitudinally curved rod.
6 more elements
An attachment for converting a drive input from a powered drive device into an arcuate accessory path, said attachment comprising:
- a mounting portion for mounting said attachment to the powered drive device;
- an arcuate converting mechanism comprising (i) a longitudinally curved rod attachable to the drive input and (ii) an accessory holder attached to said curved rod and movable therewith, wherein said curved rod is movable along an arcuate rod path in an extension stroke and a retraction stroke responsive to movement of the drive input, whereby said arcuate converting mechanism is operable to convert the drive input into arcuate reciprocating movement of said accessory holder;
- an accessory having an arcuate working surface that curves in the same direction as said longitudinally curved rod, said accessory mounted to said accessory holder and reciprocally movable along an arcuate accessory path via said arcuate converting mechanism, wherein said arcuate working surface and said longitudinally curved rod together extend over an angle of at least about 45 degrees;
- wherein said arcuate rod path is substantially the same in both the extension stroke and the retraction stroke of said curved rod;
- and
- wherein a curvature of said arcuate working surface of said accessory is substantially the same as or substantially parallel to said arcuate rod path, whereby said arcuate working surface traverses an arcuate working surface path that is substantially the same in both the extension stroke and the retraction stroke as said accessory holder reciprocates along said arcuate accessory path.
3 more elements
Dependencies are inferred from the claim text.