Guard system for a power saw

Patent metadata

Field	Value
Publication number	US-9254580-B2
Application number	US-55987309-A
Country	US
Kind code	B2
Filing date	Sep 15, 2009
Priority date	Sep 15, 2009
Publication date	Feb 9, 2016
Grant date	Feb 9, 2016

Abstract

A modular guard system for a power saw includes a riving knife mounted to the saw rearwardly of the blade and having first and second notches with openings facing away from each other. A blade guard assembly is releasably mounted on the riving knife and configured to cover the blade. The blade guard assembly includes a mounting portion configured to receive a top portion of the riving knife having the first and second notches and a release mechanism provided in the mounting portion and having a spring member for engaging the first notch and a latch member connected to the spring member for engaging the second notch. The latch member exerts a force on the spring member to cooperatively hold the first and second notches between the spring member and the latch member to retain the riving knife in the mounting portion.

First claim

What is claimed is:

1. A modular guard system for a power saw of the type which has a table top and a rotatable circular saw blade, the table top having an opening through which the saw blade can extend, said guard system comprising:
a riving knife for being mounted on the saw rearwardly of the blade, said riving knife having spaced first and second notches each having an opening facing away from each other; and
a blade guard assembly that is releasably mounted on said riving knife for covering the saw blade, said blade guard assembly comprising:
a mounting portion receiving a top portion of said riving knife, the top portion having said first and second notches; and
a release mechanism provided in said mounting portion, said release mechanism having a spring member positioned in engagement with said first notch and a latch member positioned in engagement with said second notch, said latch member being connected to said spring member;

wherein said latch member includes a handle, and an axle pin is secured to said mounting portion and positioned in engagement with said second notch in said top portion of said riving knife, said axle pin defining a pivot axis of said latch member such that said latch member is pivotally mounted on said axle pin so as to be pivotable with respect to the mounting portion and about the axle pin between a locked position and a released position,
wherein said spring member includes a first end portion and a second end portion, said first end portion being attached to said latch member, said second end portion being positioned in engagement with said first notch, and
wherein moving said handle of said latch member into said locked position exerts a force on said spring member to cooperatively hold said first and second notches between said spring member and said axle pin of said latch member to retain said riving knife in said mounting portion, and moving said handle into said released position removes said force exerted on said spring member to release said riving knife from said mounting portion.

2. A modular saw guard system as defined in claim 1 , wherein said mounting portion includes a pair of spaced brackets that form a channel therebetween in which said top portion of said riving knife is received, and
wherein said axle pin extends across said channel.

3. A modular saw guard system as defined in claim 2 , wherein said mounting portion includes a pad extending from each of said brackets in said channel, said pads forming a slot in which said top portion of said riving knife is received.

4. A modular saw guard system as defined in claim 2 , wherein
said spring member is a wire loop, said first end portion of said wire loop being closed for engaging said first notch, said second end portion of said wire loop being connected to of said latch member opposite from the closed first end portion.

5. A modular saw guard system as defined in claim 4 , wherein
said first end portion of said wire loop is connected to said latch member through an aperture formed in said latch member.

6. A modular saw guard system as defined in claim 2 , wherein
said spring member is a flat spring with said second end portion having a hook portion that is positioned in engagement with said first notch, and said first end portion is located at an opposite end of said flat spring from said hook portion.

7. A modular saw guard system as defined in claim 6 , wherein said first end portion of said flat spring is pivotally connected to a pin member provided on said latch member between said axle pin and said handle.

8. A modular saw guard system as defined in claim 2 , wherein said latch member includes a first end portion and a second end portion, said first end portion of said latch member being pivotally connected to said axle pin, said second end portion of said latch member being located distally with respect to said axle pin, and
wherein said spring member is pivotally connected to said latch member between said first end portion of said latch member and said second end portion of said latch member.

Assignees

• Frolov Andrew
• Bosch Gmbh Robert

Inventors

• Frolov Andrew

Classifications

• B27G19/025

  with guards for tool · CPC title

• Y10T83/732

  With guard · CPC title

• Y10T83/2077

  By kerf entering guide · CPC title

• Y10T83/773

  Work-support includes passageway for tool [e.g., slotted table] · CPC title

• B27G19/08 Primary

  Accessories for keeping open the saw kerf, e.g. riving knives or wedge plates · CPC title