Class 37/340 - Grab

Subclass of Class 37 - Excavating
Definition: Apparatus wherein the dredging tool consists of two pivotally
No. of patents: 35
Last issue date: 05/06/2008

Number	Title	Issue Date
7367143	Cutter and method for working the soil A cutter for working the soil includes a cutting frame, at least two cutting wheels that are supported on the cutting frame in a rotatably drivable manner about parallel axes of rotation, and an adjusting device, The adjusting device functions to adjust the center d...	05/06/2008
7350322	Dewatering system apparatus and method for dredging buckets A dewatering apparatus for removing water from the interior volume of a closed, loaded clamshell dredging bucket. The dewatering system comprises at least one conduit adapted for support from a clamshell type dredging bucket. The conduit has a first end adapted for ...	04/01/2008
7207127	Hook-on grab bucket, in particular motor-driven underwater grab bucket A grab bucket, in particular motor-driven underwater grab bucket, has first and second half-scoops. The scoops can be moved relative to on another from an open position into a closed position by a hydraulic cylinder. The opening angle of the half-scoops is monitored...	04/24/2007
6684536	Sea grass slab planter and related process The planting of individual sea grass plants or small bunches of sea grass plants is known in the prior art. In the prior art these plantings are made either manually or with appropriate machinery. This invention deals with the digging, transporting and pl...	02/03/2004
6557277	Hydraulic circuit of working machine A hydraulic circuit for a working machine is provided which prevents a decrease in the working speed of a clamshell bucket upon expansion of an expansion arm, so that improvement of the operability can be achieved. A hydraulic circuit for a working machin...	05/06/2003
6540925	Oil recovery method and oil recovery apparatus An apparatus for recovering oil has a bucket for skimming and collecting water and oil floating on the surface of the water. The bucket has a base plate having apertures for draining water collected by the bucket. The apertures have a preselected diameter...	04/01/2003
6533944	Method and device for recovering fine sand from a floating dredger The method relates to the recovery of fine sand on floating production equipment in the form of a floating grab-bucket type excavator or floating bucket chain dredger. In this case, the dredged material is dewatered and transported to shore via floating c...	03/18/2003
6134815	Monitoring device for motor-driven underwater grab bucket dredge gear A monitoring device for motor-driven underwater grab bucket dredges contains a bucket gear suspended on a cable. The device ensures reliable monitoring and controlling of the operating condition of the bucket gear 4. There is at least one sensor connected...	10/24/2000
6076029	Slope excavation controller of hydraulic shovel, target slope setting device and slope excavation forming method A slope excavation control system for a hydraulic excavator and a slope excavation method using a hydraulic excavator include an external reference 80 which extends horizontally in the direction of advance of a target slope face. A vertical distance hry a...	06/13/2000
5970634	Semi-submersible machine for remediation of constructed drainage areas A semi-submersible machine moves on rotatable endless belt tracks over diverse surfaces and has two tools on articulated booms for remediation of roadside drainage ditches, retention ponds and other shallow water bodies. One tool is a cutter bar for cutti...	10/26/1999
5588536	Dredge with bi-directional grizzly A water based dredge includes a grizzly with a sieve and a pair of bi-directional rakes. The rakes translate relative to the stationary sieve to slide waste or recoverable material off of the grid and onto a refuse barge or material processing apparatus, ...	12/31/1996
5553404	Power bucket A bucket for power shovels is disclosed having a first bucket half and a second bucket half. Each bucket half includes a pair of spaced side walls and an end wall extending between the side walls which together forms a scoop for each bucket half. The buck...	09/10/1996
5540005	Contaminated marine sediments dredging apparatus A marine dredging device comprised of scoop buckets hinge-connected to a soil receiver chamber with deployable silt curtains. The silt curtains are deployed to close off the aperture between the scoop buckets and prevent the extrusion of soil. Introductio...	07/30/1996
5511366	Water body cleaning apparatus and method A lake rake (1) or other aquatic tool that is drag-line operated in a body of water (4) between a first earth-anchored vehicle (9) with a motorized winch (8) at a distal position (15) and a second earth-anchored vehicle (11) with a motorized winch (10) an...	04/30/1996
5199194	Sea bottom sampler The invention relates to an apparatus, suitable for deployment from small vessels, for obtaining samples of materials from the sea bottom and, more specifically, to a multi-bucket sampler particularly suited for, but not restricted to, gathering samples f...	04/06/1993
5179793	Floating dredger The floating dredger is provided with a floating body and a framework 1 on which a drive for driving pulleys 2,3,4 is mounted. Over the driving pulley 2 a hoisting rope 5 is put; on both sides of the pulley the grippers 6,7 are suspended, by means of rope...	01/19/1993
5072991	Floating grab dredge and unloading method therefor A floating grab dredge has first and second pontoons spaced apart sufficiently to define a work space therebetween. The work space is large enough to define a barge slip therein as well as a digging well adjacent to the barge slip. A gantry mounted on the...	12/17/1991
4908966	Benthic dredge construction A benthic dredge has a hollow body provided with closures at its upper and lower ends which are movable between open and closed positions. The closure at the lower end of the body is in the form of clamshell jaws which are pivotable about an axis located ...	03/20/1990
4676052	Self-propelled dredge A self-propelled dredge includes a floating hull and a propulsion unit associated with the hull to propel the hull at the direction of an operator. Preferably, the propulsion unit includes a pair of paddlewheels disposed on opposite sides of the hull and ...	06/30/1987
4373278	Single line deep-sea bucket and release A single line deep-sea bucket and release is provided for mining operations and emergency fouling situations at extreme depths. A clamshell mechanism is provided with a bucket support frame and a hoisting frame with coupling means maintaining a fixed conn...	02/15/1983
4265036	Bucket dredging and conveying system A method and apparatus for removing bottom material from beneath the surface of a body of water includes a floatable base upon which a tower is mounted for extending vertically upwardly therefrom. A rigid, elongate member having a bucket is connected to t...	05/05/1981
4231172	Floating dredger and treatment plant A dredging and treatment apparatus is provided for the working of alluvial deposits in deep waters in excess of 100 meters. The apparatus comprises an elongated pontoon having a container at one end and a treatment plant at the other. A plurality of grab ...	11/04/1980
4216997	Grab excavator with fixed jib A grab excavator of the kind having a fixed jib, a liftable grab supported by the jib and a chute articulated about a horizontal axis for pivoting between an operative position in which the chute is directed obliquely downwards to receive material release...	08/12/1980
4187625	System for excavation at sea through horizontal guiding by means of cables An underwater excavation system comprises an excavating implement suspended from a surface support by a carrying line and means for moving the implement horizontally between an excavation site and a spoil dumping site comprising a guide line cooperating w...	02/12/1980
4150503	Apparatus for excavation and earth removal from aquatic bottoms A floatable apparatus provided with a lifting element for displacing it between the surface and bottom of a water basin has at least two jaws or grippers which are suitable for use as a clam-shell bucket or the like. The jaws are suspended from the liftin...	04/24/1979
4116069	Device for taking bottom soil samples from deep water basins The device comprises two independently operating systems which are separated from each other in kinematical and actuating respects, viz, a system for closing the jaws of the sample-taking grab and a system for dropping the ballast weights. Said system for...	09/26/1978
4092790	Floatable apparatus for excavating and transporting excavated material An apparatus for excavating and transporting excavated material, said apparatus including a nonfloating frame structure having a pair of opposed shovels swingably supported on the opposite sides thereof. A drive mechanism is connected between the frame st...	06/06/1978
4084336	Vibrator equipped grab bucket A grab bucket for a grab dredger having a vibrator of waterproof construction mounted on the interior of a bucket shell for causing forced vibration of the grab bucket....	04/18/1978
4053999	Automatic grab crane A time saving automatic hydraulic control for that sequence in operations in which a grab excursioning out of sight of the operator, is sequentially lowered open to engage work material, closed to pick up a load, and then hoisted with its load and emptied...	10/18/1977
4047311	Automatic grab bucket with pressure responsive solenoid control A time saving automatic hydraulic control for that sequence in operations in which a grab excursioning out of sight of the operator, is sequentially lowered open to engage work material, closed to pick up a load, and then hoisted with its load and emptied...	09/13/1977
3996678	Free-fall grab A scissors-type, free-fall grab is disclosed for picking up ground samples from a sea bed. The grab includes two grab halves which may pivot relative to one another. A transverse bar engages the upper ends of the grab halves to hold the grab in its opened...	12/14/1976
3967394	Automatic grab crane A time saving automatic hydraulic control for that sequence in operations in which a grab excursioning out of sight of the operator, is sequentially lowered open to engage work material, closed to pick up a load, and then hoisted with its load and emptied...	07/06/1976
3949498	Grab bucket for dredging sludge A grab bucket particularly suitable for dredging the bottom of the sea, rivers, lakes, etc. is provided with bottom plates at the lower portion of a framework from the bottom of which pivotally hang a pair of bucket shells, whereby the bottom plates coope...	04/13/1976
3949497	Releasable latching apparatus for a benthic grab Releasable latching apparatus for a benthic dredge having closures latchable in open position, the apparatus comprising vertically displaceable latch pins coupled to a plunger which is vertically displaceable by a weighted messenger....	04/13/1976
3945137	Brake for cushioning pendulum movements, especially for grab buckets of hydraulically operable earth dredges A pendulum brake for cushioning pendulum movements, especially for grab buckets of hydraulically operable earth dredges in which the pendulum brake is arranged at the free end of the shank. A grab bucket holder and a drum are by means of fitting keys non-...	03/23/1976

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Class 37/340 - Grab