A handle assembly for a garden tool includes a housing having a gripping portion defining an extension direction, the housing defining a cavity for detachably mounting a battery pack, the battery pack being configured to be inserted into the cavity along the extension direction of the gripping portion. A related garden tool includes a link assembly; a working mechanism arranged at one end of the link assembly; and a power mechanism arranged at the other end of the link assembly. The power mechanism includes a gasoline engine with an electric starting system having a starting motor powered by the battery pack.

A drone with vehicular control system/sensors that can share data with other vehicles and that can communicate with the cloud to provide intelligent handling of the irrigation system. The drone can be used to dispense soil additives and to inspect plants/trees on the farm.

A panning tool is described and comprises a sifting scoop comprising an elongated half sphere of proportional dimensions. The elongated half sphere can be a one-piece main body comprising a floor with a front edge, a left side wall curving upwardly along the floor's left side, a right side wall curving upwardly along the floor's right side, and a back wall curving upwardly from the floor's back side. The left side wall, right side wall, and back wall define a reservoir. The floor extends forwardly from the back side. The panning tool comprises a connection body. The connection body is affixed to an interior face of the sifting scoop. Methods of using the panning tool and manufacturing the sifting scoop are also described.

Disclosed embodiments include power machines and related structures of lift arms, implement carriers, follower links, and driver links which improve manufacturability, reduce component failures, and improve power machine design and functionality. In some embodiments, lift arm structures include cast lower lift arm portions. The cast lower lift arm portions include contoured upper ends which are sleeved onto contoured lower ends of upper lift arm portions to control stress points and to reduce stresses on welds. The follower link structures can include follower links which are configured to be positioned at least partially outside of the lift arm structure to improve rear visibility. The driver link structures can be configured to be laterally overlapping with innermost surfaces on the lift cylinder, but configured such that as the lift arm is raised the laterally overlapping portions are moved above the innermost surfaces of the lift cylinder.

A medical light source device includes: a light emitting element; and a processor comprising hardware. The processor is configured to: determine a light source control value; and control the light emitting element to emit light with a light emission amount according to the light source control value by controlling at least one of a supply time of a current and a current value that are supplied to the light emitting element. The processor is further configured to: turn off the light emitting element in the readout period, when the light source control value decreases from a first value to a second value; and turn on the light emitting element in the readout period, when the light source control value increases from a third value, different from the second value, to a fourth value.

Disclosed embodiments include power machines and related structures of lift arms, implement carriers, follower links, and driver links which improve manufacturability, reduce component failures, and improve power machine design and functionality. In some embodiments, lift arm structures include cast lower lift arm portions. The cast lower lift arm portions include contoured upper ends which are sleeved onto contoured lower ends of upper lift arm portions to control stress points and to reduce stresses on welds. The follower link structures can include follower links which are configured to be positioned at least partially outside of the lift arm structure to improve rear visibility. The driver link structures can be configured to be laterally overlapping with innermost surfaces on the lift cylinder, but configured such that as the lift arm is raised the laterally overlapping portions are moved above the innermost surfaces of the lift cylinder.

A device for excavating a precise plug of sand from a sand surface and umbrella assemblies are shown and described. In particular embodiments, a plunger includes a distal portion having a cavity, an elbow, and an elongated body separating said distal portion and the elbow. The result is a plunger and umbrella assemblies for excavating a precise, uniform hole substantially equivalent to the pole diameter.

A device for excavating a precise plug of sand from a sand surface and umbrella assemblies are shown and described. In particular embodiments, a plunger includes a distal portion having a cavity, an elbow, and an elongated body separating said distal portion and the elbow. The result is a plunger and umbrella assemblies for excavating a precise, uniform hole substantially equivalent to the pole diameter.

Disclosed embodiments include power machines and related structures of lift arms, implement carriers, follower links, and driver links which improve manufacturability, reduce component failures, and improve power machine design and functionality. In some embodiments, lift arm structures include cast lower lift arm portions. The cast lower lift arm portions include contoured upper ends which are sleeved onto contoured lower ends of upper lift arm portions to control stress points and to reduce stresses on welds. The follower link structures can include follower links which are configured to be positioned at least partially outside of the lift arm structure to improve rear visibility. The driver link structures can be configured to be laterally overlapping with innermost surfaces on the lift cylinder, but configured such that as the lift arm is raised the laterally overlapping portions are moved above the innermost surfaces of the lift cylinder.

A device for collecting and distributing material into a receptacle having a receptacle curvature includes: a tapered wall; and a tamping flange adjoining the tapered wall. The tapered wall has a tapered wall curvature that approximates the receptacle curvature. The tamping flange is configured to compact the material into the receptacle.