Circular saw dust collection shroud
First Claim
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1. A shroud for a circular saw comprising:
- an upper plate having an upper surface which is attachable to a lower surface of a circular saw shoe;
a lower plate attached to a bottom of the upper plate, the lower plate having a lower surface which is placed adjacent a surface of a material for cutting the material;
an air flow plenum located between the upper plate and the lower plate;
a blade opening in the shroud, the blade opening extending through the upper plate and the lower plate to allow a circular saw blade to pass through the blade opening and cut a material, wherein the blade opening comprises a left side, a right side, a rear end, a front end, a width between the left side and the right side, and a length between the front end and the rear end which is longer than the width;
a closed left side wall extending along a majority of the left side of the blade opening which blocks air flow into the plenum through the left side of the blade opening and a closed right side wall extending along a majority of the right side of the blade opening which blocks air flow into the plenum through the right side of the blade openingan exhaust port attached to the shroud, the exhaust port having a bore which is open to the plenum;
a front dust collection opening which is located between the left side of the blade opening and the right side of the blade opening and which creates an air flow passage through the front end of the blade opening between the upper plate and the lower plate, wherein the front dust collection opening is connected to the plenum such that air is drawn from the front end of the blade opening, through the airflow passage in the front end of the blade opening, into the plenum, and out the exhaust port by a vacuum source.
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Accused Products
Abstract
A shroud for circular saws is provided. The shroud attaches to the shoe of a circular saw and includes a blade opening to allow the saw blade to pass through the shroud. Dust is collected from the front and back of the blade and directed to a vacuum through an internal plenum. The shroud may include vertical hoods which extend up from the front and back of the blade opening and cooperate with the circular saw blade guard to capture dust and debris. The bottom of the shroud may include wheels to assist in using the shroud and saw.
252 Citations
20 Claims
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1. A shroud for a circular saw comprising:
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an upper plate having an upper surface which is attachable to a lower surface of a circular saw shoe; a lower plate attached to a bottom of the upper plate, the lower plate having a lower surface which is placed adjacent a surface of a material for cutting the material; an air flow plenum located between the upper plate and the lower plate; a blade opening in the shroud, the blade opening extending through the upper plate and the lower plate to allow a circular saw blade to pass through the blade opening and cut a material, wherein the blade opening comprises a left side, a right side, a rear end, a front end, a width between the left side and the right side, and a length between the front end and the rear end which is longer than the width; a closed left side wall extending along a majority of the left side of the blade opening which blocks air flow into the plenum through the left side of the blade opening and a closed right side wall extending along a majority of the right side of the blade opening which blocks air flow into the plenum through the right side of the blade opening an exhaust port attached to the shroud, the exhaust port having a bore which is open to the plenum; a front dust collection opening which is located between the left side of the blade opening and the right side of the blade opening and which creates an air flow passage through the front end of the blade opening between the upper plate and the lower plate, wherein the front dust collection opening is connected to the plenum such that air is drawn from the front end of the blade opening, through the airflow passage in the front end of the blade opening, into the plenum, and out the exhaust port by a vacuum source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A shroud for a circular saw comprising:
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an upper plate having an upper surface which is attachable to a lower surface of a circular saw shoe; a lower plate attached to a bottom of the upper plate, the lower plate having a lower surface which is placed adjacent a surface of a material for cutting the material; an air flow plenum located between the upper plate and the lower plate; a blade opening in the shroud, the blade opening extending through the upper plate and the lower plate to allow a circular saw blade to pass through the blade opening and cut a material, wherein the blade opening comprises a left side, a right side, a rear end, a front end, a width between the left side and the right side, and a length between the front end and the back end which is longer than the width; an exhaust port attached to the shroud, the exhaust port having a bore which is open to the plenum; a dust collection opening located in the blade opening, the dust collection opening being connected to the plenum such that air is drawn through the dust collection opening, into the plenum, and out the exhaust port by a vacuum source; and a front hood attached to the shroud at the front end of the blade opening, wherein the front hood has a lower portion which extends along the front end of the blade opening and wherein the front hood comprises a flexible tongue shaped extension which extends upwardly in front of the blade opening from the front hood lower portion to a position over the front end of the blade opening and above the shroud and adjacent an upper stationary blade guard of a circular saw which is attached to the shroud to funnel air and debris into the dust collection opening. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification