Harvesters – Marine
Patent
1990-10-23
1993-03-02
Dang, Hoang C.
Harvesters
Marine
56 103, 56 112, 56257, A01D 4508
Patent
active
051898675
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to an aquatic vegetation cutter for the efficient removal of aquatic weeds such as algae and the like growing from the bottom bodies of water, or for the harvesting of aquatic crops.
BACKGROUND OF THE INVENTION
The growth of most aquatic vegetation, such as algae, is harmful to the ecology of a body of water. It substantially contributes to the eutrophication of the body of water and this eventually leads to the extinction of all life from the water and to the formation of a slimy overgrowth. This renders the water unsightly and useless for practically any purpose. Harvesting of aquatic vegetation growth, along with the building of sewers to prevent nutrient run-off into the water, are among the principal measures to save bodies of water from eutrophication.
Aquatic weed infestations adversely effect boating, drainage, irrigation, fish and wildlife, and recreation. Heavy infestations may block or impede boat movement, damage propellers, or block engine cooling systems. Water flow in drainage and irrigation ditches may be seriously retarded by aquatic plants.
Infestations may render the area unsuitable for fish by exhausting dissolved oxygen in basic food production, by restricting the movement of fish or by rendering shallow water unsuitable for spawning.
Excessive growth of aquatic plants interferes with recreational use of water in lakes and ponds. In addition to preventing access to an the use of water for hunting and fishing, aquatic plants often preclude boating, swimming, skiing and other water oriented activities reducing the recreational value of water resources.
Improving water quality by controlling aquatic weeds will restore the balance of the body of water and increase the value of waterside property.
The harvesting of aquatic vegetation is carried out practically exclusively with clumsy, inefficient machinery which is generally very large and provides its own flotation. The operator of the large machinery usually rides the machine itself in the water. Alternative means for the removal of aquatic vegetation growth includes various toxic chemicals, but these are expensive and have their own dangerous ecological side effects. There is no simple, relatively small machinery available to small riparian owners for the removal of aquatic vegetation growth.
There are various smaller aquatic vegetation cutting devices disclosed in the prior art, however, none of them appear to have been commercially realized. U.S. Pat No. 3,499,271 shows an underwater weed cutter attachment for the drive shaft of an outboard motor and the propeller of the motor is, in turn, attached to the drive shaft protruding from the cutter attachment. Two sets of flat reciprocating blades are powered from the drive shaft of the outboard motor through a power transmission.
U.S. Pat. No. 3,601,956 discloses a hand operated underwater cutter in which double edge blades are attached to opposite sides of a header which is mounted at the end of a shaft which permits the immersion of the header and the blades into th water. The blades pivot away from the direction of movement to permit uncut weeds from slipping out of the end of the blade to prevent it from fouling.
French patent No. 1,051,916; and Swiss patents Nos. 125,643 and 126,354 also describe simple, rudimentary aquatic weed cutting devices or features thereof.
OBJECT AND BRIEF DESCRIPTION OF THE INVENTION
The object of the present invention is to provide an aquatic vegetation cutter or harvester which is small, portable, can be inexpensively produced, and can be easily used either from a boat, a pier, the shore, or by wading in the water. The device of the present invention can be operated as a hand held device or attached to a support, such as the side or transom of a boat or a stationary support, such as a sawhorse. The aquatic vegetation cutter, therefore, has to be portable, of light weight and not bulky, it should adapt easily to frequent and rapid variations in depth and inclination of the bottom of the water, it should be
REFERENCES:
patent: 1269139 (1918-06-01), Welch
patent: 1387578 (1921-08-01), Yost
patent: 1986177 (1935-01-01), Zastoupil
patent: 2065733 (1936-12-01), Pearson
patent: 2223641 (1940-12-01), Sanger
patent: 2343848 (1944-05-01), Rabl
patent: 2417613 (1947-03-01), Radabaugh
patent: 2528470 (1950-10-01), Elder
patent: 2536803 (1951-01-01), Gleason
patent: 2540616 (1951-02-01), Hasslacher
patent: 2692508 (1954-10-01), Orr
patent: 2907162 (1959-10-01), Rebikoff
patent: 3227005 (1966-01-01), Johnson
patent: 3477315 (1969-11-01), Macks
patent: 3499271 (1970-03-01), Drigert
patent: 3520117 (1970-07-01), Pepke et al.
patent: 3601956 (1971-08-01), Akermanis
patent: 3631742 (1972-01-01), Hoffmeister
patent: 3765156 (1973-10-01), Porter
patent: 3808779 (1974-05-01), Randall
patent: 3973378 (1976-08-01), Bartasevich
patent: 4060010 (1987-11-01), Heden
patent: 4202155 (1980-05-01), Stewart
patent: 4617838 (1986-10-01), Anderson
Erectoweld Inc.-Aquamarine Sales Literature.
Popular Science, p. 117, Apr. 1950.
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