摘要:
The cylindrical plug of a low-voltage, high current capacity connector assembly has an axially positioned sleeve wiping contact and a transversely positioned U-shaped channel member to provide two pairs of planar wiping contact surfaces parallel to the plug axis and substantially perpendicular to the plug housing surface. The socket component, which will accept standard low-voltage, low current car appliance plugs, includes an internally mounted, closed face pin contact and a barrel contact having depending ears positioned to engage the protruding sides of the plug U-shaped channel member. The socket also has an internal boss and housing lip to prevent electrical activation of a standard automotive cigarette lighter plug, and the plug component of the connector assembly has the sleeve contact recessed to prevent contact following insertion into a conventional cigarette lighter socket. The mobile power tool and appliance operating system includes a portable lead-acid battery pack having a high current capacity socket compatible with existing low current plugs used with appliances intended to operate from automotive cigarette lighter sockets. Matable high current capacity plugs are attached to power tools and appliances through retractable cords. The battery pack is receivable in a 120 VAC powered charging base having a self-contained charging circuit including a transformer and a voltage regulator.
摘要:
An improved power tool system includes a power tool having a motor and a controller enclosed within a motor and controller housing, with the motor and controller sealingly coupled with the motor to prevent liquids and gasses from entering the motor and controller housing. In one aspect, the motor and controller housing comprises first and second interfitting components. In another aspect, a fixture for manufacturing a motor and controller housing includes a base with first and second angularly disposed support surfaces, and a pressing member received between the first and second support surfaces.
摘要:
A saw includes a base, a table supported above the base and configured to support a workpiece, an arm coupled to and extending above the base, and a saw unit supported by the arm so that the saw unit is disposed above the table. A first rail is fixedly coupled to the base and extends in a longitudinal direction, and a first bearing member is coupled to the table. The first bearing member moves along the first rail so that the table is moveable relative to the base in the longitudinal direction between a cantilevered position and an uncantilevered position, without any movement of the table relative to the first bearing member. The first bearing member is directly in contact with the first rail in both the cantilevered and uncantilevered positions.
摘要:
The miter saw includes a base assembly, a rotatable table rotatably connected to the base assembly and having a plane, a saw assembly including a motor and a blade disposed on an arbor, and a pivot arm pivotally attached to the table and supporting the saw assembly. The motor preferably drives a belt, which drives a first gear. The first gear meshes with an idler gear, which in turn meshes with a gear disposed on the arbor.
摘要:
An explosive assisted fastener for joining steel framing members. The fastener is comprised of an integrally formed member having a head section, a stem section and a tip section, such that the head section is disposed at a first end of the stem section and adapted to be linearly driven by a driving device into the framing members, and the tip section is disposed at a distal second end of the stem section and adapted to penetrate the framing members. The fastener further includes an explosive material embedded in the tip section of the fastener. In operation, the fastener is driven through the framing members until the head section of the fastener seats against an outer surface of the framing members. Once driven into place, the explosive material residing in the fastener is detonated, thereby radially expanding the tip section of the fastener and preventing removal of the fastener from the framing members.
摘要:
A saw includes a base having a first length extending generally along a first direction, a table disposed on the base, a saw unit disposed on the base, wherein one of the table and the saw unit is movable relative to the base along the first direction over a range which exceeds the first length. The saw may also include a first stationary rail connected to the base and extending generally along the first direction and a first movable rail engaging the first stationary rail and extending generally parallel to the first stationary rail, the first movable rail being connected to the one of the table and saw unit. Preferably, the first movable rail is slidingly received over the first stationary rail. The saw may also include a first rack disposed on the first movable rail, and a first pinion disposed on the base, wherein the first pinion meshes with the first rack so that the first movable rail moves along the first direction upon rotation of the first pinion. Preferably, the saw further includes a second stationary rail connected tot the base and extending generally along the first direction and substantially parallel to the second stationary rail, and a second movable rail engaging the second stationary rail and extending generally parallel to the first movable and second stationary rails, the second movable rail being connected to the one of the table and saw unit.
摘要:
A compound miter saw includes a table on which a workpiece is placed, a miter saw unit supporting a saw blade, and a housing pivotally supporting the miter saw unit related to the table in such a manner that the miter saws unit is at least laterally pivotable. Further, the miter saw includes a bevel mechanism for selectively determining the lateral position of the miter saw unit at any of a plurality of pivoted positions, including a vertical position where the saw blade is positioned substantially vertically relative to the table, and leftward and rightward pivoted positions where the blade is inclined laterally leftwardly and laterally rightwardly from the vertical position. The bevel mechanism includes a movable rod and three fixed stop members, the rod being operable to move between a first rod position abutting one of the fixed stop members and a second rod position not abutting the one of the fixed stop members so as to permit the lateral pivotal movement of the miter saw unit. The first fixed stop member is disposed so that the rod abuts the first fixed stop member when the miter saw unit is at the vertical position. Similarly, the second fixed stop member is disposed so that the rod abuts the second fixed stop member when the miter saw unit is leftwardly pivoted at a first predetermined angle from the vertical position. Further, the third fixed stop member is disposed so that the rod abuts the third fixed stop member when the miter saw unit is rightwardly pivoted at a second predetermined angle from the vertical position.
摘要:
An improved picture hanger assembly is hereby proposed. The picture hanger assembly for hanging a picture having a center of gravity comprises a wall attachment assembly for attaching to a wall, the wall attachment assembly having a first curved support area extending away from the wall, the first curved support area having a first center at a first radial distance and left and right ends, and a picture attachment assembly for attaching to a picture, the picture attachment assembly having a second curved support area extending away from the picture, the second curved support area being disposable on the first curved support area and having a second center at a second radial distance and left and right ends, wherein the center of gravity lies within an area defined by a first line extending from one of the first and second centers and intersecting the left end of either the first or second curved support areas, and a second line extending from the one of the first and second centers and intersecting the right end of either the first or second curved support areas. Preferably, the first and second curved support areas are substantially concentric. Also, the first and second centers may be below the first and second curvatures. Preferably, the curvature of the second curved support area is substantially equal to or greater than the curvature of the first curved support area.