A backpack tool system and a backpack power supply apparatus for use with an electric tool. The backpack power supply apparatus includes a battery pack for providing electric energy, a body for carrying the battery pack, and a wearable device connected to the body and wearable by a user to carry the body. The battery pack is detachably connected to the body. The body defines a plane and a height extending in a heightwise direction. The body is at least partially symmetrical about the plane. The wearable device includes a strap, which includes an upper end connected to an upper portion of the body. The upper end of the strap applies a force to the body when the user wears the wearable device. An included angle between a projection of a direction of the force on the plane and the heightwise direction is greater than or equal to 30 degrees and less than or equal to 50 degrees.

A backpack tool, a backpack blower and a control handle assembly are provided by the present invention. The backpack tool includes a battery pack for providing electric energy, a power assembly electrically connected with the battery pack to convert the electric energy provided by the battery pack into mechanical energy, and a backpack assembly carried on human back to support the battery pack and the power assembly. Both battery pack and the power assembly can be carried on human back through the backpack assembly, so that the force loaded by arms of the worker can be reduced. The battery pack serves as a power source can reduce the noise and vibration caused by the backpack toll during working as compared with the gasoline powered backpack tool.

A rolling assembly, the rolling assembly including: a body; one or more surface rollers rotatable with respect to the body; and at least one rotatable sweeping device including: an elongate member rotatable with respect to the body; and a sweeping head located over the elongate member and rotatable with respect to the elongate member, wherein the sweeping head is configured to engage with the one or more surface rollers such that the rotation of the one or more surface rollers rotates the sweeping head.

A head assembly for a rake is provided. The head assembly includes a base portion, a handle coupling, and a number of tines. Each tine includes an elongated body. Each tine body includes a first end, a flexure portion, an offset portion, and a distal second end. The tines includes a first set of tines and a second set of tines. A number of tine bodies in the first set of tines have an offset portion lateral cross-sectional aspect ratio that is greater than 1.0. A number of tine bodies in the second set of tines have an offset portion lateral cross-sectional aspect ratio that is less than 1.0.

A head assembly for a rake is provided. The head assembly includes a base portion, a handle coupling, and a number of tines. Each tine includes an elongated body. Each tine body includes a first end, a flexure portion, an offset portion, and a distal second end. The tines includes a first set of tines and a second set of tines. A number of tine bodies in the first set of tines have an offset portion lateral cross-sectional aspect ratio that is greater than 1.0. A number of tine bodies in the second set of tines have an offset portion lateral cross-sectional aspect ratio that is less than 1.0.

A leaf rake includes a handle having an elongated body with a first end, a medial portion, and a second end, and a head assembly including a base portion and a handle coupling, the handle coupled to the head assembly by the handle coupling. The head assembly includes a first and a second set of tines unitary with the base portion, wherein each tine of the first and second set of tines includes an elongated body having a first end, an offset portion, and a distal second end, wherein the offset portion of the first set of tines is disposed on a first side of the base portion and wherein the offset portion of the second set of tines is disposed on the first side of the base portion. A shrub rake including a coupling, a base portion and a number of tines is selectively coupled to the head assembly.

A debris collector for collecting leaves and debris may include a first staff having a first handle attached to a first end thereof and a first shovel scoop attached to a second end thereof; a second staff having a second handle attached to a first end thereof and a second shovel scoop attached to a second end thereof; and a spring clamp connector attaching the first staff to the second staff such that when the first handle and the second handle are pushed together, the first shovel scoop moves away from the second shovel scoop; and when the first handle and the second handle are released, the first shovel scoop and the second shovel scoop clamp together.

A groomer for turf surfaces includes a groomer frame that mounts a first style of grooming brush for use on an artificial turf surface and a second style of grooming brush for use on a natural turf surface. The first style of grooming brush comprises a brush formed by spaced brush walls with each brush wall having a substantially single row of brush bristles with no bristles being placed between the brush walls. The second style of grooming brush is that similar to a push broom where the brush bristles are packed across the width of the brush head. When configured for artificial turf surfaces, a front row of scarifying spring tines helps the trailing brushes to level out the infill material and the attitude of the groomer frame can be tilted tail down to put more downpressure on the infill material. A debris remover attached to the rear of the frame can pick up and hold metallic debris that is often found in the turf surface.

A pet waste removal device to remove pet waste from a surface, pet waste removal device including a main body including a plurality of wheels disposed at bottom corners of the main body to rotate such that the main body is propelled in a forward direction, a waste collecting aperture disposed at a front portion of the main body to receive the pet waste therethrough, a reverse axle including a plurality of rakes disposed on a surface of the reverse axle, wherein the reverse axle rotates in a direction opposite to the rotation of the plurality of wheels to allow the plurality of rakes to pick up the pet waste and introduce the pet waste through the waste collecting aperture, and a sanitizer compartment to store sanitizer therein and nozzles to spray the sanitizer out from the sanitizer compartment.