Abstract: A powered saw 1 includes a frame 3 with a continuous loop blade 5 positioned in a coplanar relationship with the frame 3 along a system of blade guides 7 so that a cutting surface 9 of the blade 5 faces a desired cutting area. The relative positions between the frame arms 13, the frame handle 2, and the blade 5 provides a degree of stability and control that allows the operator to precisely and accurately control the cutting surface 9 of the blade 5 along curves, notches, and protrusions, including those involved in coping. In addition, this arrangement results in a compact design that positions the cutting surface 9 in close proximity to the handle 2.

Abstract: A removeable attachment for a powered tool includes a frame with a continuous loop blade positioned in a coplanar relationship with the frame along a system of blade guides so that a cutting surface of the blade faces a desired cutting area. The relative positions between the frame arms, the frame handle, and the blade provides a degree of stability and control that allows the operator to precisely and accurately control the cutting surface of the blade along curves, notches, and protrusions, including those involved in coping and sanding. In addition, this arrangement results in a compact design that positions the cutting surface in close proximity to the handle.

Abstract: The invention provides a frame (12) of a hack-saw (10) and, particularly, the handle formation (14), defines shoulder formations (22) that define a linear edge (24) on opposite sides of the extension formation (16), the operative external edge (26) of the extension formation (16) extending perpendicularly with respect of the shoulder formations (22). As such, the frame (12) of the hack-saw (10) can be used as a conventional L-square.

Abstract: An elongate, cylindrical hand-held powered coping saw adapted for making thin cuts of short length, such as for cutting individual dies from a full arch dental model generally includes a blade assembly, a housing, a rotary motor having a drive shaft, a piston for driving the blade assembly, and a motion converter connecting the drive shaft to the piston for converting rotary motion of the drive shaft into reciprocating linear motion of the piston. Preferably, the blade stroke length is less than the distance between opposing U-sections of a full dental arch model along a cut line.

Abstract: A coping saw is provided having two spaced-apart rotary actuators supported by a frame. Two saw-blade sections extend between the two rotary actuators and are intended to singularly engage a work piece. The saw is adapted to contain a drive mechanism which is coupled to a first of the two rotary actuators for causing the saw-blade sections to move in at least one direction. At least one guide roller assembly is disposed each of the two saw-blade sections for providing stability and retaining said two-saw blade sections between said two rotary actuators.

Abstract: A coping saw attachment for a hand held power jig saw which is capable of being quickly and easily attached to a standard hand held power jig saw. The coping saw attachment for a hand held power jig saw generally includes a substantially “c-shaped” coping saw blade support member which supports a standard coping saw blade, a handle which is removably attached on either side of the substantially “c-shaped” coping saw blade support member and a coping saw blade adapter which facilitates the attachment of a standard coping blade into a hand held power jig saw blade chuck.

Abstract: A thin saw blade with four cutting surfaces of fixed lengths in line, each cutting surface rotated with respect to the preceding cutting surface to enable a user to change cutting directions of the blade without rotating the material to be cut. A second embodiment uses a blade with two cutting surfaces of fixed length with cutting surfaces on opposed edges of the blade requiring only a single twist and enabling cutting of thicker pieces of material with longer strokes. A preferred embodiment uses the blade in a coping saw with each rotation being 90 degrees enabling rapid smooth cuts of thin materials for handicraft projects. Rubber O-rings secure the blade in anchor bolt slots to secure the blade while cutting in different directions. The blade could also be used in electric sabre saws or bench jig saws which would require adjustment of the work support surface to change cutting directions.

Abstract: A saw is described as having an adjustable handle wherein the angle of the handle in relation to the longitudinal axis of the saw blade and blade holder is rotatably adjustable.

Abstract: An open-ended handle is disclosed for use with framed saws, such as coping saws. The open-ended handle is generally J-shaped and has a grip member that is perpendicular to the saw blade. The open-ended handle is mounted to the saw such that the grip member is also symmetrical about the mounting point. The present invention provides an arrangement in which the hand-grip portion of the handle is symmetrical about a longitudinal axis of motion when the saw is in use to allow the greatest amount of power to be transferred to the saw blade along a single line of force which not only provides for accurate cutting, but also eases tension on the user's hand and wrist to reduce fatigue. This arrangement provides a saw that is equally balanced and usable in both an upright position and an inverted position for accurate and easy cutting in a downward direction as well as an upward direction.

Abstract: It comprises a U-shaped bow (1), a handle (2) and two securing devices (3, 4) at both ends of the saw (5), each of the devices (3, 4) comprising a body (31) fitted with a longitudinal passage (32) enabling the control and centering of the saw (5), the body (31) comprising a tightening screw (33, 34) fitted perpendicularly to the passage (32) enabling the possibility of tightening the corresponding end of the afore-mentioned saw (5) in the passage (32).

Abstract: The present invention provides a symmetric, D-shaped handle for use with coping and similar saws which are generally comprised of a saw blade attached to a U-shaped frame having first and second shanks. The handle is comprised of a perpendicular cross-member mounted between the two shanks of a C-shaped member. The cross-member, which is used for gripping, is maintained substantially perpendicular to the saw blade while the planes of the saw frame shanks remain substantially parallel to the cross-member. At the center point of the C-shaped member is an aperture to allow the D-shaped handle to slide onto the threaded shaft of a standard blade holder. A standard fastener such as a wing nut may then be threadingly engaged with the shaft to attach and tighten the handle onto the shaft and simultaneously tension and align the saw blade between the shanks of the saw frame.

Abstract: A mechanized coping saw has a frame and handle attached thereto, the frame including a U-shaped portion with opposite leg sections having outward ends, a cavity formed within the U-shaped portion, and apertures proximate the outward ends of the leg sections which open into the cavity. An endless blade travels through the cavity of the U-shaped portion around rotating elements with a portion of the blade extending straight between the leg sections to define an exposed blade cutting section, A power drive system drives the blade through the cavity. The invention uses a pair of guide rollers which are placed along the profiled edge of a molding piece to steadily guide the blade cutting section for precise coping of the molding piece. The rollers are adjustable to provide for a variety of different cutting angles and situations.

Abstract: A powered coping saw has a frame that includes a first leg, a second leg and a third leg. A blade is reciprocally movable in a first and second direction with respect to the frame. First and second blade mounting brackets are provided for mounting the respective first and second ends of the blade. A blade driver is coupled to both the first and the second blade mounting brackets for actively driving both the first and the second ends of the blade in both the first and the second directions. The blade driver includes a motor, a transmission, a first drive member, and a first pivoting arm member. The first pivoting arm member has a first end pivotally coupled to the first drive member, and a second end. A reciprocally moving arm member has a first end pivotally coupled to the second end of the first pivoting arm member, and a second end. A second pivoting arm member has a first end pivotally coupled to the second end of the reciprocally moving arm member, and a second end.

Abstract: A cordless, electric handsaw. A U-shaped frame is removably mounted to the saw main frame to support the outer end of a coping saw blade having an inner end removably mounted to a reciprocably driven linkage connected to a battery operated motor contained in the handle. A keyhole saw blade is mountable to the reciprocably driven cylinder once the coping saw blade is removed.