Patents Assigned to Crary Company
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Patent number: 6397573Abstract: A reel bat assembly has a plurality of reel bat tubes formed into sections so that the assembly of reel bat tubes can be disassembled for shipping and can be reassembled to provide for a long reel bat needed for modern harvesters. The reel bat assembly includes molded tines that have saddle-like hubs which attach to the reel bat tubes using a single screw that extends through the reel bat tubes and threads into a receptacle formed in a post of those tines. The post protrudes into the interior of the reel bat tube and expands as the screw is tightened to provide a secure, stable tine that is held securely with two parts, the tine and the screw.Type: GrantFiled: March 6, 2001Date of Patent: June 4, 2002Assignee: Crary CompanyInventor: David S. Majkrzak
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Patent number: 6324962Abstract: A valve block mounting arrangement for mounting a valve block directly to the ports of a hydraulic motor. The inventive device includes a main body having a first bore, a second bore and a cartridge bore. The first bore and the second are substantially parallel to one another with the cartridge bore intersecting the parallel bores and designed for removably receiving a control cartridge. A first female coupler and a second female coupler are rotatably positioned within the bores for connecting to a pair of corresponding hydraulic hoses. A first male coupler and a second male coupler are rotatably positioned within the bores opposite of the female couplers for threadably securing to the first port and second port of a rear ported hydraulic motor. The female couplers are preferably connected to the male couplers thereby allowing an individual to apply a tool to the female couplers to rotate the male couplers into the ports of the hydraulic motor.Type: GrantFiled: April 10, 2000Date of Patent: December 4, 2001Assignee: Crary CompanyInventor: David Majkrzak
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Patent number: 6199358Abstract: Reel tine assemblies including molded tines that have saddle-like hubs which attach to reel bat tubes using a single screw that extends through the reel bat tubes and threads into a receptacle formed in a post of those tines. The post protrudes into the interior of the reel bat tube and expands as the screw is tightened to provide a secure, stable tine that is held securely with two parts, the tine and the screw.Type: GrantFiled: June 11, 1999Date of Patent: March 13, 2001Assignee: Crary CompanyInventor: David S. Majkrzak
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Patent number: 6074298Abstract: A leveling auger for an extendable height combine grain hopper is mounted onto supports pivoted on brackets so that the auger is effective to level grain in the hopper extension space when in a usable position. The auger will move grain into the regions defined by the hopper extensions. The supports can be pivoted to move the leveling auger to a lowered position. When in its lowered position, the auger is below the level of the hopper after the extension walls are folded down for clearance purposes. A separate grain level sensing switch is used for operating the leveling auger so that the leveling auger is run only when grain has reached a preselected height in the grain hopper.Type: GrantFiled: June 17, 1998Date of Patent: June 13, 2000Assignee: Crary CompanyInventors: David S. Majkrzak, Todd A. Nesemeier
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Patent number: 5359835Abstract: A weed remover for removing weeds and preventing the growth of new weeds on the bed of a body of water. The weed remover comprises a housing a motor, a drive chain, and a roller having a plurality of fins attached thereto. The motor drives the drive chain which in turn rotates the roller. When the roller is rotated, the fins dig into the bed of the body of water, causing the roller to roll along the bed. The housing is attached to a dock such that it can rotate about a generally vertical axis, permitting the roller to roll in an arc. The direction of rotation of the roller can be reversed such that the roller reciprocates over substantially the same path.Type: GrantFiled: December 28, 1992Date of Patent: November 1, 1994Assignee: Crary CompanyInventor: David S. Majkrzak
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Patent number: 5240189Abstract: An apparatus for shredding debris from lawns and trees, such as twigs, leaves and like material has a housing in which a rotor is rotatably mounted about an upright axis. The plane of the rotor is thus generally horizontal and supported on a frame which permits movement across the ground. A vertical shaft engine is mounted on the upper side of the housing and supports the rotor within the housing cavity. The rotor has blades which generate an air flow as the rotor is rotating, to provide a vacuum in the center portions of the rotor. The vacuum draws material through a central opening in the bottom of the housing, and the blades impel the material outwardly toward pivotally mounted shredder blades at the outer periphery of the rotor. The rotor also mounts chipper blades in an upper surface thereof with an upwardly extending guide chute receiving limbs and guiding such limbs into the path of the chipper blades as the rotor is rotated, to chip branches, limbs and the like.Type: GrantFiled: October 25, 1991Date of Patent: August 31, 1993Assignee: Crary CompanyInventors: David S. Majkrzak, Patrick M. Cronin, Duane J. Antonsen
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Patent number: 4986012Abstract: A motorized rotary blade snowblower is used for the removal of snow. This snowblower has a housing which covers the rotary blades and a drift cutting arm that is fastened to and extends p from the sides of the housing. The drift cutter is fastened to the housing so that it can be locked in a working position and retracted to a storage position.Type: GrantFiled: October 23, 1989Date of Patent: January 22, 1991Assignee: Crary CompanyInventor: David S. Majkrzak
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Patent number: 4936082Abstract: A combined mechanical air reel for harvesting equipment has a control support-manifold tube and a plurality of depending tubes mounted on the support-manifold tubes that direct a curtain of air against grain to be cut to move the grain toward a cutter bar on which the reel is mounted. At the same time a rotatable finger carrying bat type mechanical reel, also mounted on the central support-manifold tube, is used to feed material to the cutter bar. The mechanical reel bats rotate around the outside of the support-manifold tube. The bats extend parallel to the cutter bar, and the postion of fingers on the bats is controlled by a cam action that permits the bats and the fingers to enter and exit the grain substantially vertically to reduce shattering of the grain. A positive cam drive is provided for actuating the fingers.Type: GrantFiled: November 17, 1988Date of Patent: June 26, 1990Assignee: Crary CompanyInventor: David S. Majkrzak
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Patent number: 4805390Abstract: A modular knifeback for a sickle knife assembly that is made into lengths that are standardized for permitting ease of shipment, storage and handling, and which lengths can be spliced into a desired extended length knife assemble for use in harvesting machinery, or the like, without sacrificing rigidity and strength where the modular sections are joined together. The modular sections are made sufficiently long so that the bolts or rivets used where the modular sections join are capable of withstanding the loads that are incurred on the knife assembly during use. The modular sections of the sickle are easily kept, and stored, and are assembled using standard components without specialized tools.Type: GrantFiled: May 14, 1987Date of Patent: February 21, 1989Assignee: Crary CompanyInventor: David S. Majkrzak
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Patent number: 4651511Abstract: A mower assembly in which a standard sickle guard having two long fingers is replaced with a guard having two long fingers and two alternate fingers that are relatively short. The sickle blade cooperates with cutting surfaces on both the long and the short fingers. In the case of the long fingers, there are slots through which the sickle bar moves. In the case of the short fingers, the blade merely moves over a cutting surface of the short finger. There are trash bars extending between the fingers to strengthen the fingers and guard against rocks or uncut plants jamming the space between the fingers.The guard unit is fastened at two points to the guard support bar so as to minimize any tendency of the guard unit to turn.Type: GrantFiled: May 2, 1986Date of Patent: March 24, 1987Assignee: Crary CompanyInventor: David S. Majkrzak
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Patent number: RE34225Abstract: A modular knifeback for a sickle knife assembly that is made into lengths that are standardized for permitting ease of shipment, storage and handle, and which lengths can be spliced into a desired extended length knife assemble for use in harvesting machinery, or the like, without sacrificing rigidity and strength where the modular sections are joined together. The modular sections are made sufficiently long so that the bolts or rivets used where the modular sections join are capable of withstanding the loads that are incurred on the knife assembly during use. The modular sections of the sickle are easily kept, and stored, and are assembled using standard components without specialized tools.Type: GrantFiled: February 20, 1991Date of Patent: April 20, 1993Assignee: Crary CompanyInventor: David S. Majkrzak