Back to results
US 6,401,346 B1Granted
Power coping band saw
OwnerRussell Brett Robertsinventor
Life of this patent
Estimating the term…
Abstract
A lightweight, hand-held, egonomically designed and balanced, electric powered, band-type, coping saw is disclosed. The device includes a handle for housing, controlling and providing power to a variable speed electric motor. The motor operates a gear drive which propels a sprocketed band blade or abrasive cable around and through a pulley system situated within a specially designed U-shaped uniframe attached to the handle. The motor is powered by a detachable and rechargeable battery or by alternating current.
Claims10
A powered band-type coping saw comprising:
- a continuous band coping saw blade having a plurality of concave hemispheric indentions spaceably positioned along the entire top portion of one side of said blade;
- a uni-cast or uni-body housing comprising an ergonomically designed handle portion and a U-shaped frame portion extending laterally from said handle portion with said frame portion having an L-shaped cross-section so as to form a channel along its entire length, said frame portion also having a snap-on frame cover for protection and added safety during coping operations;
- a pulley system attached to said U-shaped frame for holding and guiding said coping saw blade around and through the channel formed by said frame, said pulley system comprising a plurality of guide pulleys and a double-sprocketed drive pulley with said drive pulley comprising a gear drive sprocket and a blade drive sprocket, said blade drive sprocket having a plurality of hemispheric nodules positioned around the circumference of its axle for mechanically engaging the concave indentations along said continuous band coping saw blade;
- a drive means comprising a shaft-driven gear drive attached to a motor means with said gear drive being rotatably mounted to said motor means at one end of said handle portion of said uni-body housing and adjacent to said U-shaped frame so as to mechanically engage the gear drive sprocket of said double-sprocketed drive pulley;
- a detachable power means attached at the end of said handle portion of said uni-body housing opposite said drive means for providing power to said motor means;
- and,
- ergonomically placed control mechanisms along the handle portion of said uni-body housing for controlling and operating said motor means.
4 more elements
A powered band-type coping saw comprising:
- an ergonomically designed uni-cast or uni-body housing having a handle portion and a U-shaped frame portion with said frame portion extending laterally and homogeneously from said handle portion and having an L-shaped cross-section so as to form a continuous channel along said frame, said frame further comprising a mounting surface along and within said channel;
- a continuous band coping saw blade having a plurality of hemispheric indentions spaceably positioned along the entire top portion of one side of said blade;
- a pulley system comprising a plurality of guide pulleys and a double-sprocketed drive pulley is attached to the mounting surface of said U-shaped frame so as to form a closed rotational system for operably receiving the continuous band coping blade;
- said double-sprocketed drive pulley of said pulley system further comprising a gear drive sprocket and a blade drive sprocket with said blade drive sprocket having a plurality of hemispheric nodules positioned around the circumference of the drive sprocket axle so as to mechanically engage said continuous band coping blade;
- a drive means housed within the handle portion of said uni-body housing comprising a shaft-driven gear drive attached to a motor means with said gear drive being rotatably mounted to said motor means at one end of said handle portion and positioned adjacent to said U-shaped frame so as to mechanically engage the gear drive sprocket of said double-sprocketed drive pulley;
- a detachable power means disposed within a compartment attached to the handle portion of said uni-body housing opposite said drive means, said power means compartment being angled slightly upwards with respect to said handle portion for additional balance, stability and user comfort during the coping process;
- and,
- control mechanisms ergonomically positioned along the handle portion of said uni-body housing for controlling and operating said motor means and said continuous band coping saw, said control mechanisms comprising a variable speed trigger, a forward and reverse switch and a safety kill switch, said variable speed trigger being ergonomically positioned on the bottom side of said handle near the U-shaped frame so as to provide the greatest possible comfort and control during use.
5 more elements
Dependencies are inferred from the claim text.