Abstract: A demolition hammer is provided that includes a housing that is reversible and a plurality of interchangeable wear plates. The demolition hammer may include a housing a housing having a first wall and a second wall opposite the first wall, and a power cell disposed within the housing, the power cell having a front face, wherein the housing is reversible such that the housing can be used with the power cell in a first orientation in which the front face faces the first wall and a second orientation in which the front face faces the second wall.

Abstract: A demolition hammer is provided that includes a housing that is reversible and a plurality of interchangeable wear plates. The demolition hammer may include a housing a housing having a first wall and a second wall opposite the first wall, and a power cell disposed within the housing, the power cell having a front face, wherein the housing is reversible such that the housing can be used with the power cell in a first orientation in which the front face faces the first wall and a second orientation in which the front face faces the second wall.

Abstract: A demolition hammer is provided that may include a housing having a distal end, a power cell disposed in the housing, an end plate attached to the distal end of the housing, and a damper disposed in the housing between the power cell and the end plate, wherein the damper is spaced apart from the power cell by a gap. The damper may also support and align a plurality of wear plates interposed between the housing and power cell. The damper may have generally rectangular first portion having a planar upper surface and a planar lower surface generally parallel to the upper surface and a generally circular second portion extending from the lower surface, wherein the first portion and the section portion define a central through bore.

Abstract: A demolition hammer is provided that includes a housing that is reversible and a plurality of interchangeable wear plates. The demolition hammer may include a housing a housing having a first wall and a second wall opposite the first wall, and a power cell disposed within the housing, the power cell having a front face, wherein the housing is reversible such that the housing can be used with the power cell in a first orientation in which the front face faces the first wall and a second orientation in which the front face faces the second wall.

Abstract: A rock claw is provided for a demolition hammer. The rock claw may be a separate component attachable to the external surface of the hammer housing. The rock claw may include a first portion with a first distal end and a first proximal end and a second portion with a second distal end and a second proximal end. The first proximal end is joined to the second proximal end to form an elbow and the second distal end having a first leg spaced apart from a second leg.

Abstract: A demolition hammer may include a housing having a distal end and a proximal end, a power cell disposed in the housing along a longitudinal axis and a side buffer positioned to support the power cell in the housing, wherein the housing forms a first retaining structure that prevents axial movement of the side buffer toward the proximal end. The housing may also form a second retaining structure that prevents inward radial movement of the side buffer and a third retaining structure that prevents outward radial movement of the side buffer.

Abstract: A rock claw is provided for a demolition hammer. The rock claw may be a separate component attachable to the external surface of the hammer housing. The rock claw may include a first portion with a first distal end and a first proximal end and a second portion with a second distal end and a second proximal end. The first proximal end is joined to the second proximal end to form an elbow and the second distal end having a first leg spaced apart from a second leg.

Abstract: A demolition hammer is provided that includes a housing that is reversible and a plurality of interchangeable wear plates. The demolition hammer may include a housing a housing having a first wall and a second wall opposite the first wall, and a power cell disposed within the housing, the power cell having a front face, wherein the housing is reversible such that the housing can be used with the power cell in a first orientation in which the front face faces the first wall and a second orientation in which the front face faces the second wall.

Abstract: A demolition hammer is provided that may include a housing having a distal end, a power cell disposed in the housing, an end plate attached to the distal end of the housing, and a damper disposed in the housing between the power cell and the end plate, wherein the damper is spaced apart from the power cell by a gap. The damper may also support and align a plurality of wear plates interposed between the housing and power cell. The damper may have generally rectangular first portion having a planar upper surface and a planar lower surface generally parallel to the upper surface and a generally circular second portion extending from the lower surface, wherein the first portion and the section portion define a central through bore.

Abstract: A combination of an attachment, a power device and a quick-disconnect coupling device for attaching a variety of attachments to a stick includes a pair of brackets attached to the attachment, a frame assembly being attached to the power device and an activation device. The actuation device having a plurality of linkage members being positioned in a locked position when the power device is attached to the attachment and being in an open position when not being attached to the attachment. The linkage members including a latch having a pair of ends being spaced apart and in the locked position being in contacting relationship with the each of the pair of brackets.

Abstract: A quick-disconnect coupling device (12) for use with a power device (8) and for attaching a variety of attachments (18) to a stick (10) includes a pair of brackets (22) attached to the attachment (18), a frame assembly (40) being attached to the power device (8) and an activation device (80). The actuation device (80) having a plurality of linkage members (82) being positioned in a locked position (84) when the power device (8) is attached to the attachment (18) and being in an open position (83) when not being attached to the attachment (18). The linkage members (82) including a latch (130) having a pair of ends (132) being spaced apart and in the locked position (84) being in contacting relationship with the each of the pair of brackets (22).

Abstract: A hammer mill apparatus for comminuting materials such as wood, branches, twigs, leaves, grasses, hay, and the like, features a reciprocating batch feeder for feeding the materials to be comminuted into a rotary grinder. Adjustable and spring biased feed drum and metering roller meters the material into the hammer mill. The positions of a series of adjustable curved grinding teeth changes the sizes of the comminuted particles.

Abstract: A snow shovel that includes a forwardly opening hood supported on front and rear wheels for movement into a layer of snow on the ground surface. The bottom walls of the shovel is formed by a snow ejection plate that is swingably mounted for movement in a vertical arc from a prone position to an upright position. Snow deposited on the upper face of the plate is forcibly ejected from the shovel when the plate is swung to its upright position.

Abstract: A portable door lock that includes a tension plate insertable into the clearance space between the edge of a door and the facing surface of a door jamb. Ears on the plate hook into a striker plate opening. A door keeper element is swingably connected to the tension plate for movement against the exposed face of the door. The door-engagement surface of the keeper element is a cam surface adapted to move angularly along the door face at a relatively slight angle, such that the keeper element assumes a wedged condition. The cam surface gives the keeper element an adjustability that compensates for tolerance variations in the spacing between the door face and the striker plate opening.