An automated system is provided for moving a boat from a storage position in a boat garage to a deployed position in a dock channel. The system can include a boat trolley. The boat trolley can include a frame that couples to and rides on rails of a track that extends between the boat garage and the dock channel. The boat trolley can also include bunker supports for supporting the hull of the boat. A dock lift mechanism can lower the trolley frame into the water, from which the boat can be deployed. Once done using the boat, the user can navigate the boat onto the trolley frame, and the dock lift mechanism used to lift the trolley frame and boat out of the water, and the boat trolley operated to move the boat from the dock to the boat garage for storage.

An aspect of the present disclosure is directed to a monorail system configured and arranged for displacing at least one maintenance device configured and arranged for machining substantially vertically extending surfaces. Another aspect is directed to a maintenance system consisting of at least one maintenance device which is displaceable on the monorail system.

A hydraulic circuit includes a hydraulic power unit, a first cylinder pair coupled with the hydraulic power unit, and a second cylinder pair coupled with the hydraulic power unit in parallel with the first cylinder pair. Re-phasing valves coupled with each cylinder of the first and second cylinder pairs are activated when a respective one of the cylinders reaches one of a fully extended or a fully retracted position. The hydraulic circuit incorporates the serially plumbed, re-phasing cylinders for synchronized movement in a system with multiple pairs of cylinders.

A hydraulic circuit includes a hydraulic power unit, a first cylinder pair coupled with the hydraulic power unit, and a second cylinder pair coupled with the hydraulic power unit in parallel with the first cylinder pair. Re-phasing valves coupled with each cylinder of the first and second cylinder pairs are activated when a respective one of the cylinders reaches one of a fully extended or a fully retracted position. The hydraulic circuit incorporates the serially plumbed, re-phasing cylinders for synchronized movement in a system with multiple pairs of cylinders.

A magnetic wheel includes: a balance block; a magnetic body which is provided in the balance block and attaches the balance block to an attachment object with a magnetic force; and a magnetic shielding block which is provided in the balance block and guides a magnetic field generated in the magnetic body toward the attachment object.

A magnetic wheel includes: a balance block; a magnetic body which is provided in the balance block and attaches the balance block to an attachment object with a magnetic force; and a magnetic shielding block which is provided in the balance block and guides a magnetic field generated in the magnetic body toward the attachment object.

An apparatus (100), having: an extension structure (200) configured to be secured to a base structure (400) and to define an extension structure roofline (204); and a side cover assembly (300) having a first portion (304) that is configured to be supported by the extension structure and a second portion (306) that is configured to protrude past the extension structure and thereby not be supported by the extension structure.

An apparatus (100), having: an extension structure (200) configured to be secured to a base structure (400) and to define an extension structure roofline (204); and a side cover assembly (300) having a first portion (304) that is configured to be supported by the extension structure and a second portion (306) that is configured to protrude past the extension structure and thereby not be supported by the extension structure.

A retractable canopy for a watercraft lift includes an actuator operatively connected to the watercraft lift and a movable boom to rotate the movable boom relative to the watercraft lift; a linkage extends between the fixed boom and the movable boom, at least one first strut is supported by the linkage, at least one second strut is supported by a fixed boom; and at least one third strut is supported by the movable boom. The fixed boom, the movable boom, the at least one second strut, and the at least one third strut support a cover in an extended configuration above a watercraft area. The fixed boom, the movable boom, the at least one first strut, the at least one second strut, and the at least one third strut support the cover in a retracted configuration adjacent to the fixed strut.

A retractable canopy for a watercraft lift includes an actuator operatively connected to the watercraft lift and a movable boom to rotate the movable boom relative to the watercraft lift; a linkage extends between the fixed boom and the movable boom, at least one first strut is supported by the linkage, at least one second strut is supported by a fixed boom; and at least one third strut is supported by the movable boom. The fixed boom, the movable boom, the at least one second strut, and the at least one third strut support a cover in an extended configuration above a watercraft area. The fixed boom, the movable boom, the at least one first strut, the at least one second strut, and the at least one third strut support the cover in a retracted configuration adjacent to the fixed strut.