BAND SAW
A handheld band saw includes a housing, a motor supported by the housing, a handle coupled to the housing, and a saw blade substantially covered by the housing except a portion of the saw blade extending through a cut zone. The handheld band saw further includes a drive wheel assembly and a shoe coupled to the housing. The shoe extends into the cut zone and is configured to support a workpiece during the cutting operation. The shoe includes an actuator that is coupled for movement with the shoe. The actuator is configured to adjust the shoe to one of a plurality of predefined positions relative to the housing.
This application is a continuation of co-pending U.S. Pat. Application No. 16/801,679, filed on Feb. 26, 2020, which claims priority to U.S. Provisional Pat. Application No. 62/812,638, filed Mar. 1, 2019, the entire contents of both of which are incorporated herein by reference.
BACKGROUND OF THE INVENTIONThe present invention relates to a handheld saw, and, more particularly, to a portable band saw. Handheld band saws are used to cut a variety of workpieces, such as pipes, rods, studs, and blocks. A cordless, compact band saw allows for cutting operations in tight spaces or awkward angles for plumbing, electrical, remodeling, and HVAC applications.
SUMMARY OF THE INVENTIONIn one aspect, the invention provides a handheld band saw includes a housing, a motor supported by the housing, a handle coupled to the housing and configured to be grasped by a user during a cutting operation, and a saw blade substantially covered by the housing except a portion of the saw blade extending through a cut zone. The handheld band saw further includes a drive wheel assembly having a drive wheel driven by the motor and a driven wheel driven by the drive wheel via the saw blade. The handheld band saw further includes a shoe coupled to the housing and extending into the cut zone. The shoe is configured to support a workpiece during the cutting operation. The shoe includes an actuator that is coupled for movement with the shoe. The actuator is configured to adjust the shoe to one of a plurality of predefined positions relative to the housing.
In another aspect, the invention provides a handheld band saw including a housing, a handle supported by the housing and configured to be grasped by a user during a cutting operation, a motor supported by the housing, and a drive wheel assembly rotationally driven by the motor. The drive wheel assembly is at least partially disposed within the housing. The band saw further includes a saw blade driven by the drive wheel assembly. The saw blade is configured to cut a workpiece during the cutting operation. The band saw further includes a shoe coupled to the housing adjacent the saw blade. The shoe is configured to support a workpiece during the cutting operation. The shoe includes a slide mechanism for adjusting the shoe along a shoe axis that is parallel to the saw blade, and a detent mechanism having a tooth that is selectively receivable in one of a plurality of notches for maintaining the shoe in a discrete position along the shoe axis. The tooth has a cam surface shaped to permit removal of the tooth from one of the plurality of notches when a force is applied to the shoe in the direction of the shoe axis, thereby causing the shoe to move along the shoe axis.
With continued reference to
With reference to
With reference to
Each pipe reamer attachment 90a, 90b, 90c includes a blade 108 for engaging and removing a burr formed on the end of a pipe after the blade 34 has cut the pipe. The blade 108 is disposed within the annular shroud 104a, 104b, 104c to prevent the blade 108 from being exposed from the exterior of the shroud 104a, 104b, 104c. The blade 108 of the illustrated embodiment is a multi-tiered blade, where each tier is capable of engaging a different sized pipe, such as pipes ranging from ⅓ inches in diameter to 1 inch in diameter. In other embodiments, the blade 108 may alternatively be three separate blades.
With reference to
However, the detent mechanism 125 is designed in a cam-like manner such that the tooth 126 has a cam surface 127 shaped to permit the tooth 126 to be removed from the notch 128, without depressing the actuator 124, and moved to the retracted position when a sufficient upward force is exerted on the shoe 110 (from the frame of reference of
With reference to
Various features of the invention are set forth in the following claims.
Claims
1. A handheld band saw comprising:
- a housing;
- a motor supported by the housing;
- a handle coupled to the housing and configured to be grasped by a user during a cutting operation;
- a saw blade substantially covered by the housing except for a portion of the saw blade extending through a cut zone in which a workpiece is cut during the cutting operation;
- a drive wheel assembly having a drive wheel driven by the motor and a driven wheel driven by the drive wheel via the saw blade; and
- a shoe coupled to the housing and extending into the cut zone, the shoe being configured to support a workpiece during the cutting operation,
- wherein the shoe includes an actuator that is coupled for movement with the shoe and is configured to adjust the shoe to one of a plurality of predefined positions relative to the housing.
2. The handheld band saw of claim 1, further comprising a rail extending from the housing and defining a shoe axis, wherein the shoe slides along the shoe axis that is parallel to the saw blade in the cut zone.
3. The handheld band saw of claim 2, wherein the actuator is depressed by a user, enabling a user to move the shoe between a retracted position and an extended position along the shoe axis.
4. The handheld band saw of claim 3, further comprising a tooth that is actuated via the actuator and a plurality of notches along the rail that selectively receive the tooth to maintain the shoe in one of the plurality of predefined positions between the retracted position and the extended position.
5. The handheld band saw of claim 4, wherein the tooth is moveable between a first position, in which the tooth is received in one of plurality of notches, thereby inhibiting the shoe from moving along the shoe axis, and a second position, in which the tooth is removed from one of the plurality of notches, thereby enabling the shoe to move along the shoe axis.
6. The handheld band saw of claim 5, wherein the tooth includes a cam surface that is capable of sliding against one of the plurality of notches to automatically move the tooth to the second position without depressing the actuator when an impact force is exerted on a distal end of the shoe, at which point the shoe moves toward the retracted position.
7. The handheld band saw of claim 6, wherein the impact force is proportionate to dropping the band saw from a distance greater than approximately two inches above a ground surface.
8. The handheld band saw of claim 5, wherein the tooth is biased toward the first position.
9. The handheld band saw of claim 1, wherein the shoe further includes a slot through which the saw blade extends.
10. The handheld band saw of claim 1, further comprising a battery removably coupled to the handle, wherein the battery, when coupled to the handle, is configured to provide power to the motor.
11. The handheld band saw of claim 1, further comprising a trigger disposed adjacent a gripping portion of the handle, wherein power from the battery is supplied to the motor when the trigger is actuated.
12. A handheld band saw comprising:
- a housing;
- a handle supported by the housing and configured to be grasped by a user during a cutting operation;
- a motor supported by the housing;
- a drive wheel assembly rotationally driven by the motor, the drive wheel assembly at least partially disposed within the housing;
- a saw blade driven by the drive wheel assembly and configured to cut a workpiece during the cutting operation; and
- a shoe coupled to the housing adjacent the saw blade, wherein the shoe is configured to support a workpiece during the cutting operation, and wherein the shoe includes a slide mechanism for adjusting the shoe along a shoe axis that is parallel with the saw blade, and a detent mechanism having a tooth that is selectively receivable in one of a plurality of notches for maintaining the shoe in a discrete position along the shoe axis, wherein the tooth has a cam surface shaped to permit removal of the tooth from one of the plurality of notches when a force is applied to the shoe in the direction of the shoe axis, thereby causing the shoe to move along the shoe axis.
13. The handheld band saw of claim 12, further comprising a battery removably coupled to the handle, wherein the battery, when coupled to the handle, is configured to provide power to the motor.
14. The handheld band saw of claim 12, further comprising a trigger disposed adjacent a gripping portion of the handle, wherein power from the battery is supplied to the motor when the trigger is actuated.
15. The handheld band saw of claim 12, wherein the shoe is moveable between a retracted position and an extended position along the shoe axis, and wherein the shoe automatically moves toward the retracted position in response to a force applied to the shoe in the direction of the shoe axis that is sufficient to overcome a biasing force of the detent mechanism.
16. The handheld band saw of claim 12, wherein the slide mechanism further includes an actuator that is capable of moving the tooth between an extended position, in which the tooth is received within one of the plurality of notches, and a retracted position, in which the tooth is removed from one of the plurality of notches.
17. The handheld band saw of claim 16, wherein the actuator is pivotably coupled to the slide mechanism.
18. The handheld band saw of claim 12, wherein the saw blade is covered by the housing except a portion of the saw blade extending through a cut zone, wherein the shoe is disposed within the cut zone.
19. The handheld band saw of claim 12, wherein the shoe further includes a support surface against which a workpiece is abutted during a cutting operation and a slot through which the saw blade extends.
20. The handheld band saw of claim 19, wherein the slide mechanism is coupled to the support surface.
Type: Application
Filed: Feb 17, 2023
Publication Date: Jun 29, 2023
Inventors: James C. Sitter (Milwaukee, WI), Kevin Staszak (New Berlin, WI), David A. Bierdeman (New Berlin, WI), Kevin R. Gee (New Berlin, WI)
Application Number: 18/171,114