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US20080066829: Cutterhead

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Filing Information

Inventor(s) Jaime Garcia · Jeffrey Weston ·
Assignee(s) Black & Decker Inc. ·
Correspondent THE BLACK & DECKER CORPORATION ·
Application Number US11522769
Filing date 09/18/2006
Publication date 03/20/2008
Predicted expiration date 09/18/2026
U.S. Classifications 144/172  · 144/230  · 144/218  ·
International Classifications B27C100  · B27C500  · B27G1300  ·
Kind CodeA1
23 Claims, 4 Drawings


Abstract

A cutterhead for use with a power tool includes a generally cylindrical body with a knife recess extending generally parallel to an axis of the body. The knife recess has a wall at an acute angle to a tangent of the outer surface. Received in the knife recess are a knife and a bar that includes an angled side configured to sandwich the knife between the angled wall of the recess and the angled side of the bar. A pin extends from the bar and is received in an aperture of the knife to align the knife relative to the bar. A threaded height adjustment screw is received in a threaded bore in the bar to adjust a height of the knife with respect to the body. A securing screw is received in a threaded opening in the body to secure the bar and the knife to the body.

Independent Claims | See all claims (23)

  1. 1. A knife assembly for receipt in a knife recess of a cutterhead, the cutterhead having a generally cylindrical body and the knife recess extending generally parallel to an axis of the cylindrical body, the knife assembly comprising: a knife configured to be received in the knife recess generally parallel to the axis, the knife defining an aperture therein; a bar configured to be received in the knife recess adjacent the knife; and a pin coupleable to the bar and receivable in the knife aperture to align the knife relative to the bar.
  2. 16. A knife assembly for receipt in a knife recess of a cutterhead, the cutterhead having a generally cylindrical body and the knife recess extending generally parallel to an axis of the cylindrical body, the knife assembly comprising: a knife configured to be received in the knife recess generally parallel to the axis; a bar configured to be received in the knife recess adjacent the knife; a securing member configured to secure the bar and the knife in the recess; and a height adjustment mechanism that is configured to adjust a height of the bar and the knife relative to the recess.
  3. 22. A cutterhead for use with a power tool, comprising: a cylindrical body portion having a cylindrical outer surface, the body portion defining a knife recess extending generally parallel to an axis of the body portion and a threaded opening in communication with the knife recess, the knife recess having an angled wall that is at an acute angle relative to a tangent line that is tangent to the outer surface at or near the knife recess; a knife having at least one blade and defining an aperture; a bar configured to be received in the knife recess, the bar including a threaded bore and an angled side configured to sandwich the knife between the angled wall of the recess and the angled side of the lock bar; a pin extending from the bar and received in the aperture for aligning the knife relative to the bar; a threaded height adjustment screw received in the threaded bore in the bar to adjust a height of the bar with respect to the outer surface of the body portion; and a securing screw received in the threaded opening in the body portion to secure the bar and the knife to the main body.
  4. 23. A cutterhead for use with a power tool, comprising: a cylindrical body portion having a cylindrical outer surface, the body portion defining a plurality of knife recesses extending generally parallel to an axis of the body portion and a plurality of threaded openings in communication with each of the knife recesses, each of the knife recesses having an angled wall that is at an acute angle relative to a tangent line that is tangent to the outer surface at or near that knife recess; a plurality of knives, each having at least one blade and each defining a plurality of apertures; a plurality of bars, each configured to be received in one of the knife recesses, the bars each including a plurality of threaded bores and an angled side configured to sandwich one of the knives between the angled wall of one of the recesses and the angled side of one of the lock bars; a plurality of pins extending from each bar and received in the plurality of apertures in each knife for aligning that knife relative to that bar; a plurality of threaded height adjustment screws, each received in one of the plurality of threaded bores in one of the bars to adjust a height of that bar with respect to the outer surface of the body portion; and a plurality of securing screws, each received in one of the plurality of threaded openings in the body portion to secure one of the bars and one of the knives to the main body.

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