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US 10,703,008 B2Granted
Portable cutting device with sealing arrangement for vacuum
OwnerCharles B. Martininventor
Life of this patent
Estimating the term…
Abstract
A portable cutting device having a cutting tool for cutting a material. The cutting device includes a motor driving the cutting tool and a shroud at least partially enclosing the cutting tool. The shroud defines a debris accumulation chamber for gathering debris created by the cutting tool cutting the material. An impeller is operatively coupled to the motor and driven by the motor to create suction pressure to draw the debris out of the debris accumulation chamber and into a collection bag.
Claims15
A cutting device comprising:
- a motor for driving a cutting blade to cut material;
- a shroud configured to at least partially enclose the cutting blade, said shroud defining a debris chamber into which material debris generated by the cutting blade during cutting is received;
- a source of vacuum in fluid communication with said debris chamber;
- a vacuum conduit defining a vacuum path extending between said debris chamber and said source of vacuum;
- a platform assembly coupled to said shroud and including:
- an upper member defining an upper opening for receiving the cutting blade;
- a lower member defining a lower opening for receiving the cutting blade, said lower member being movable between a plurality of cut depth positions relative to said shroud;
- and a pivot joint coupling said lower member to said upper member wherein said lower member is pivotable between a plurality of cut angle positions in which a relative angle between said upper member and said lower member is varied;
- and
- a sealing arrangement positioned about and surrounding said lower opening and configured to seal about said lower opening to maintain a seal between said upper member and said lower member as said lower member pivots relative to said upper member between said plurality of cut angle positions to reduce air leakage into said shroud from above said lower opening between said cut depth positions and said plurality of cut angle positions.
7 more elements
A cutting device comprising:
- a cutting blade;
- a motor coupled to said cutting blade to drive said cutting blade;
- a shroud at least partially enclosing said cutting blade, said shroud defining a debris chamber into which material debris generated by said cutting blade during cutting is received;
- a source of vacuum in fluid communication with said debris chamber;
- a vacuum conduit defining a vacuum path extending between said debris chamber and said source of vacuum;
- a platform assembly coupled to said shroud and including:
- an upper member defining an upper opening for receiving said cutting blade;
- a lower member defining a lower opening for receiving said cutting blade wherein said cutting blade extends below said lower member to cut material, said lower member being movable between a plurality of cut depth positions relative to said shroud;
- and a pivot joint coupling said lower member to said upper member wherein said lower member is pivotable between a plurality of cut angle positions in which a relative angle between said upper member and said lower member is varied;
- and
- a sealing arrangement positioned about and surrounding said lower opening and configured to seal about said lower opening to maintain a seal between said upper member and said lower member as said lower member pivots relative to said upper member between said plurality of cut angle positions to reduce air leakage into said shroud from above said lower opening between said cut depth positions and said plurality of cut angle positions.
8 more elements
Dependencies are inferred from the claim text.