A pole climbing device that includes a gripping mechanism for gripping a pole, a drive mechanism for moving the pole climbing device along the pole, and a connector for connecting the pole climbing device to a luminaire support. The pole climbing device might be configured to be remotely controlled by a user to carry a luminaire up the pole to be coupled to a connector.

A collapsible storage silo having an expanded configuration includes: (a) a shell for circumscribing storage space and comprising a plurality of concentrically nested tubular members that are collapsible; (b) a lift system operable to slidably expand the plurality of concentrically nested tubular members to place the silo in its expanded configuration; and (c) a mast operable to support the lift system, The mast is pivotable between horizontal and vertical positions relative to a frame. A winch attaches to the mast and a cable extends between the winch and an outermost tubular member to expand the silo such that inwardly and outwardly projecting lips of nested members engage each other and a conical hopper engages an innermost tubular member. A flexible inner liner attaches between an outermost tubular member and the hopper. A collapsible roof has a flexible roof membrane and a plurality of radially extending foldable rib members.

A mathematical calculator, and a method of using the same, is disclosed which can help people, particularly children, to easily learn and master multiplication operations. The mathematical calculator comprises a substantially cylindrical platform, and in accordance with a first embodiment, the multiplicands and multipliers are located within a plurality of columns and rows defined upon a plurality of adjacent wheels which are rotatable around a longitudinal axis of the platform, whereas in accordance with a second embodiment, the multiplicands and multipliers are located within a plurality of columns and rows which are defined upon a solid block.

A system including a frame and a pair wheel of assemblies to engage with one or more tracks of a structure. The pair of wheel assemblies include a first hub assembly, having a first wheel and a first attachment mechanism to engage with the one or more tracks of the structure, and a second hub assembly having a second wheel and a second attachment mechanism to engage with the one or more tracks of the structure. The system further includes an elongated rod coupling the first hub assembly to the second hub assembly, where a movement of the elongated rod causes the first attachment mechanism and the second attachment mechanism to engage with the one or more tracks of the structure.

A device for raising a temporary wall to enclose an area includes a main body, a drive wheel attached centrally to the main body, a motor mounted on the main body and configured to drive the drive wheel, and a hook portion attached each end of the main body. Each hook portion has an arm member extending from the main body, a wheel support member extending from the arm member, the wheel support member extending substantially parallel to the main body, a wheel attached to the wheel support member on a surface facing the main body, and a depth adjustment mechanism configured to adjust a depth of the device by adjusting a length of the arm member. The device also includes a width adjustment mechanism configured to adjust a width of a gap between the wheel support members and a loop member attached to the main body.

A device for raising a temporary wall to enclose an area includes a main body, a drive wheel attached centrally to the main body, a motor mounted on the main body and configured to drive the drive wheel, and a hook portion attached each end of the main body. Each hook portion has an arm member extending from the main body, a wheel support member extending from the arm member, the wheel support member extending substantially parallel to the main body, a wheel attached to the wheel support member on a surface facing the main body, and a depth adjustment mechanism configured to adjust a depth of the device by adjusting a length of the arm member. The device also includes a width adjustment mechanism configured to adjust a width of a gap between the wheel support members and a loop member attached to the main body.

A lift releasably coupled to a carrier and methods of making the lift or the carrier and methods of using embodiments of the lift which lift disposed in a retracted condition releasably couples to the carrier engaged to a support surface with the rotatable members of the one or more lifts disengaged from the support surface, and using embodiments of the lift which in an extended condition engages the rotatable members with the support surface to lift the carrier and allow translation of the carrier over the support surface.

The disclosure pertains to a method and structure of securing a fallen tree or broken utility pole that has remained partially upright and in an insecure position, thereby creating a hazard to persons or property. The disclosure teaches a stand or similar structure that secures the partially fallen tree or pole during removal operations. The stand is load bearing and may be supported by at least one angled stabilizing leg structure. The structure may rest on ground support plates. The support plates may be attached to the ground by spike or anchor mechanisms. The stand can be extendable utilizing hydraulic or manual levered jacks or an extendable piston-cylinder combination. The structure can be placed under the fallen tree or pole and extended vertically upward into contact with the tree trunk or pole. The structure may use lifting components comprising cylinder/piston combinations, telescoping pistons, scissor lift components or similar.

The disclosure pertains to a method and structure of securing a fallen tree or broken utility pole that has remained partially upright and in an insecure position, thereby creating a hazard to persons or property. The disclosure teaches a stand or similar structure that secures the partially fallen tree or pole during removal operations. The stand is load bearing and may be supported by at least one angled stabilizing leg structure. The structure may rest on ground support plates. The support plates may be attached to the ground by spike or anchor mechanisms. The stand can be extendable utilizing hydraulic or manual levered jacks or an extendable piston-cylinder combination. The structure can be placed under the fallen tree or pole and extended vertically upward into contact with the tree trunk or pole. The structure may use lifting components comprising cylinder/piston combinations, telescoping pistons, scissor lift components or similar.

The present specification relates generally to a tree climbing apparatus, and specifically to a wheel-operated tree climbing apparatus. The tree climbing apparatus includes a frame, including a first frame end and a second frame end, that is configured to receive a tree trunk, as well as a pair of rollers, including a first roller and a second roller, the first roller being securable to the frame, proximate to the first frame end and the second roller secured to the frame, proximate to the second frame end. The wheel-operated tree climbing apparatus also includes a pedalling system, whereby the pedalling system engages with and rotates at least one rollers of the pair of rollers and a motor, whereby the motor engages with and rotates at least one rollers of the pair of rollers. A related method of climbing a tree using a wheel-operated tree climbing apparatus is also described.