Abstract: A wheeled land vehicle covering system configured for one-person operation, the covering system having a covering system frame composed of a plurality of spaced apart uprights which support an overhead track from which a vehicle cover is suspended that is extendable along the track to cover a vehicle and which is retractable to uncover the vehicle. Each one of the uprights is height adjustable to adjust how far a top of the cover is above a roof of a vehicle to maintain a ventilation space therebetween. The cover is configured for one-person removal for storage when it is disposed in the fully retracted position. Such a cover also is configured for one-person installation when it is desired to reinstall the cover. The cover is attached by a hanger arrangement that enables extension and retraction of the cover by enabling relative extensible and retractable movement of the cover along the track.

Abstract: A covering system for removably covering a vehicle, such as a boat, that includes a plurality of rotatively anchored swing arms rotatable between a covered position and an uncovered position. Each swing arm includes a mount and a pretensioner formed of one or more stays adjustably attached to part of a shaft of the arm to adjust an applied preload and transfer forces encountered during operation to part of the shaft rotatively anchored by the mount to a grounded structure such as a piling or post of a dock. The swing arms are pivotally connected to an elongate transversely extending carriage from which a cover is suspended with a boom of each arm connected to the carriage by a pivot assembly that also facilitates carriage and cover position adjustment. A pivot limiter can be included that limits or even stops pivoting of the carriage relative to the swing arm boom.

Abstract: A boat cover for a suspended cover system that is configured to fit a boat in a manner that prevents relative movement therebetween minimizing wear. The cover has at least one fitting seam that follows part of the top of the boat. An integral cover cinching arrangement enables tightening the bottom of the cover against the hull bugging it. Vents overlying a passenger section minimize wind force by reducing cover pressure differential. The cover can be equipped with a second fitting seam that extends along the gunwale of the boat and can have a downwardly extending fitting seam section that extends below the gunwale toward the bow to help fit the cover to the front portion of the hull of the boat. Stretchable straps used to hang the cover from a track of the boat cover system can be used to minimize force on the cover caused by wave action.

Abstract: A covering system for removably covering a vehicle, such as a boat, that includes a plurality of rotatively anchored swing arms rotatable between a covered position and an uncovered position. Each swing arm includes a mount and a pretensioner formed of one or more stays adjustably attached to part of a shaft of the arm to adjust an applied preload and transfer forces encountered during operation to part of the shaft rotatively anchored by the mount to a grounded structure such as a piling or post of a dock. The swing arms are pivotally connected to an elongate transversely extending carriage from which a cover is suspended with a boom of each arm connected to the carriage by a pivot assembly that also facilitates carriage and cover position adjustment. A pivot limiter can be included that limits or even stops pivoting of the carriage relative to the swing arm boom.

Abstract: A boat cover for a suspended cover system that is configured to fit a boat in a manner that prevents relative movement therebetween minimizing wear. The cover has at least one fitting seam that follows part of the top of the boat. An integral cover cinching arrangement enables tightening the bottom of the cover against the hull bugging it. Vents overlying a passenger section minimize wind force by reducing cover pressure differential. The cover can be equipped with a second fitting seam that extends along the gunwale of the boat and can have a downwardly extending fitting seam section that extends below the gunwale toward the bow to help fit the cover to the front portion of the hull of the boat. Stretchable straps used to hang the cover from a track of the boat cover system can be used to minimize force on the cover caused by wave action.

Abstract: A boat cover for a suspended cover system that is configured to fit a boat in a manner that prevents relative movement therebetween minimizing wear. The cover has at least one fitting seam that follows part of the top of the boat. An integral cover cinching arrangement enables tightening the bottom of the cover against the hull hugging it. Vents overlying a passenger section minimize wind force by reducing cover pressure differential. The cover can be equipped with a second fitting seam that extends along the gunwale of the boat and can have a downwardly extending fitting seam section that extends below the gunwale toward the bow to help fit the cover to the front portion of the hull of the boat. Stretchable straps used to hang the cover from a track of the boat cover system can be used to minimize force on the cover caused by wave action.

Abstract: Illustrative marine propulsion systems are disclosed. In a non-limiting, illustrative embodiment, a marine propulsion system includes a pump housing that is configured to be disposed below a waterline of a marine vessel and a centrifugal pump assembly that is disposed in the pump housing. The centrifugal pump assembly includes an inlet pump stage configured to receive inlet water and to discharge impulse water. The centrifugal pump assembly also includes an outlet pump stage that includes an impulse turbine wheel configured to rotate about an axis responsive to the impulse water and an outlet pump stage impeller integral with the impulse turbine wheel. The outlet pump stage impeller is configured to rotate about the axis.

Abstract: A marine vessel air induction system introduces air into an under-hull cavity bounded by an underside, first and second sides, and fore and aft planing surfaces. An air inlet receives ambient air. A plenum receives air from the inlet. A fore planing surface has a trailing edge. The trailing edge and the plenum define a step that communicates with the plenum to generate a first pressure that is less than ambient pressure as a free stream of water moves past the step. Air communicated from the plenum is entrainable in the water. A mixing chamber communicates with the step, and the step and the mixing chamber cooperate to permit kinetic energy of the water to increase pressure of entrained air. At an aft end of the mixing chamber, the entrained air exerts a second pressure that is greater than ambient. Air is exhausted upwardly into the cavity.

Abstract: A stopper for a braided line having a core and a braided cover is disclosed, the stopper having a post-like part with an enlarged central section which stopper is adapted to be placed within a braided line extending substantially diametral thereof, the enlarged portion enlarging the diameter of the line so that seizing may be placed on either side thereof, which seizing will not slip.

Abstract: The present invention relates to a drydocking method and apparatus including a moment resisting arrangement for maintaining the drydocking device in a substantially horizontal plane while raising or lowering a vessel relative to a surface of a body of water. The drydocking device includes a submersible pontoon having a first side positioned adjacent to a single fixed structure and having an arrangement for selectively introducing air or water into at least one chamber within the pontoon for raising and lowering the pontoon, respectively. The pontoon has a moment resisting arrangement which includes a cable secured to the fixed structure and extending around a first sheave positioned adjacent to the first side of the pontoon. The cable extends across the pontoon and around a second sheave positioned adjacent to a second opposite side of the pontoon to an anchoring arrangement beneath the second side of the pontoon.

Abstract: A relatively small watercraft typically used by one or two persons includes a pair of spaced and usually parallel pontoons, each of which consists of an elongated body of closed-cell foamed plastic such as polystyrene. A load-distribution truss is provided on top of each of the foamed cell bodies, for transferring vertical loads to said bodies. A personnel station extends generally between the two spaced pontoons and above said pontoons. The personnel station includes a chair and a floorboard, and is sufficiently narrow so as to restrict personnel on the station to a central portion of the watercraft. A structural frame of tubular members or the like may be selectively connected to the pontoons, or the frame may be permanently connected to them. In one embodiment wherein the structure frame and the pontoons are only temporarily connected, a plurality of eye bolts and specially positioned slots are utilized so that the eye bolts need never be removed from the watercraft.

Abstract: A relatively small watercraft includes a pair of spaced and usually parallel pontoons. A personnel station extends generally between and above the two spaced pontoons. A structural frame of tubular members or bars supports the personnel station; the tubular members may be selectively connected to the pontoons, or the frame may be permanently connected to them. In one embodiment wherein the structural frame and the pontoons are only temporarily connected, a plurality of eye bolts and specially positioned slots are utilized so that the eye bolts need never be removed from the watercraft. (In this embodiment, there are no connecting pieces to ever get lost, even when the three main sub-assemblies of the watercraft are disassembled.) The eye bolts are aligned longitudinally with the slots for disassembly, and turned transversely to the slots to hold the tubular members to the pontoons. Dimples or recesses in the tubular members can be provided to inhibit unwanted rotation of an eye bolt.