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Magician Harry Houdini patented a "Diver's Suit" enabling the wearer to "quickly divest himself of the suit while being submerged and to safely escape and reach the surface of the water."
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| Number | Title | Issue Date |
| 7628662 | Motorized push pole device A motorized push pole device having a standard mounted to a raised poling platform on a boat. A housing is mounted to the standard wherein the housing is adapted to removably clamp around a push pole. A drive wheel is mounted under the housing, wherein a periphery o... | 12/08/2009 |
| 7275907 | Boat trailer tug The boat trailer tug includes a primary frame with a mounting beam that is attachable to a boat trailer frame. A primary collar is fixed to the mounting beam front end. A hitch tongue is connected to the collar and extends forward from the collar. A hitch ball recei... | 10/02/2007 |
| 7089693 | Dredging method and apparatus An improved hydraulic dredging apparatus for removing a sediment layer from an underlying substrate lying below a water surface includes a receptacle having an open-front portion through which is sediment is collected, means for attaching the dredging apparatus to t... | 08/15/2006 |
| 6918801 | Amphibious vehicle A vehicle adapted to operate on dry land, in soft terrain, and while floating. The vehicle includes a chassis formed by two interconnected pontoon sections sized such that the chassis and equipment will float. The pontoons are fitted with a track system providing pr... | 07/19/2005 |
| 6755701 | Amphibious vehicle with submersible capacity An amphibious vehicle with submersible capacity includes a first portion and a second portion, coupled by an extension, and a valve assembly. The first portion is capable of floating on water while the second portion is contemporaneously submerged beneath the surfac... | 06/29/2004 |
| 6220197 | Anchoring and operating device for a watercraft A device for operating and anchoring a watercraft in congested and hazardous water areas is provided with a spud assembly for easy operation. A pole is provided for moving a watercraft in shallow water. The pole functions through an operating cylinder con... | 04/24/2001 |
| 6168480 | Push pole for a boat A push pole for propelling a boat comprising an elongated straight pole having a first and second end and a foot extending from the second end of the elongated pole. The foot consists of two prongs where the first prong extends coaxially in relation to th... | 01/02/2001 |
| 6041730 | Shallow water anchor A shallow water anchoring mechanism for a vessel drives an upper arm between a raised position, in which the lower end of a pole is above the bottom of the hull and a lowered position, in which the lower end of the pole extends downward below the vessel s... | 03/28/2000 |
| 5791074 | Dredge A dredge including a V-shaped or U-shaped pontoon having a first leg and a second leg. The legs have effective longitudinal axes that diverge from one another by an angle of no more than 180°. Spuds or similar anchoring devices are connected to each of t... | 08/11/1998 |
| 5782660 | Watercraft propulsion system A watercraft propulsion system is provided for maneuvering and positioning a dredge or weed harvesting craft in shallow waterways and includes a pair of booms positioned adjacent the port and starboard sides of the craft. Submersible and reversible motors... | 07/21/1998 |
| 5145425 | Spud assembly for dredges A spud is reciprocal through a well carried at the lower end of a reciprocal pole. The pole carries a crane at its upper end to control the vertical position of the spud, the distance between the upper face of the well and the crane being greater than the... | 09/08/1992 |
| 5042417 | Boat Lift An attachment for a boat which raises at least the stern of a boat for transportation and/or storage. A stern support, a pivot for securing the support to the boat, and a system for pivoting the support are disclosed. The support pivoting system rotates t... | 08/27/1991 |
| 4952179 | Salt mushroom cutting apparatus Salt mushroom cutting apparatus for removing salt mushrooms from a water body, comprises a vessel floatable on the water body, and a helical cutter carried by the vessel forwardly of its bow and extending transversely thereof for pulverizing the salt bodi... | 08/28/1990 |
| 4547162 | Spud support for use in water of excessive depth A pair of normal sized anchoring spuds for use in water of moderate depth are mounted for reciprocal movement in a single, reciprocal spud support member which may be lowered into water of abnormal depth, with the spuds cooperating with the support member... | 10/15/1985 |
| 4308816 | Amphibious industrial landing stages which can be run aground and means for the displacement of heavy loads to the grounds Amphibious landing stages or heavy loads are moved over the ground on systems of shoes. A landing stage comprises two port and starboard sets of legs fitted with shoes, which are themselves fitted with soles. Jacks are provided, to enable the sliding of a... | 01/05/1982 |
| 4033056 | Spud guide means in a dredging vessel A dredging vessel has a vertically elongated spud guide in a well in the vessel, the guide being supported for horizontal movement in the well and for swinging movement in a vertical plane. Vertically spaced apart horizontal jacks are connected between th... | 07/05/1977 |
| 3983707 | Method and apparatus for moving an object on the bottom of a body of water A method for moving an object on the bottom of a body of water comprising producing a positive buoyancy in the region of one of the supports of the object to lift the support from the bottom of the body of water and then turning the object in the desired ... | 10/05/1976 |
