Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 5815960 | Retarding mechanism for the dipper door of a mining shovel Disclosed is a digging implement such as a mining shovel dipper which has a body, a movable door mounted with respect to the body and a mechanism for retarding swinging movement of the door. The mechanism includes first and second housings and plural reta... | 10/06/1998 |
| 5788096 | Material-handling machine with hinged leg A material-handling machine includes a substantially horizontal girder having an end, a supporting flanged wheel at the end, a truck having rail-riding wheels on a rail and a girder mid-portion extending from the end and connected to a support leg extendi... | 08/04/1998 |
| 5752334 | Dumping system for a dragline bucket A draglined bucket having first and second contoured dumping rails respectively supported on first and second spaced apart opposite sidewalls and a rear wall. Each dumping rail extends from above the sidewall on which it is supported to the rear wall on w... | 05/19/1998 |
| 5730855 | Hoist apparatus and method for positioning anode in smelting furnace An anode positioning hoist supported on an overhead crane used in a smelting apparatus including a cathode with an upwardly facing surface and an anode with a downwardly facing surface. The anode positioning hoist includes a pair of channel members defini... | 03/24/1998 |
| 5625262 | System for equalizing the load of a plurality of motors A system having two or more A.C. motors driving the same load. The stator windings and rotors of both motors each conduct current having a vector representative of a magnitude and angular position of the current in the respective rotor and stator winding.... | 04/29/1997 |
| 5597079 | Directional indicating device for detecting improper orientation of a hoist lifting line An indicating device is provided which includes a pivotal member mounted on a base plate attached to the frame of the trolley on which the hoist is supported, and a pair of spaced apart projections extending from the pivotal member and between which a rop... | 01/28/1997 |
| 5435084 | Apparatus and method for attaching a digging tooth tip A digging tooth assembly has a base nose, a replaceable tooth tip mounted on the base nose and a pin securing the tip to the nose. The pin includes a locking head eccentric to the pin and a pad-like resilient member is placed between the head and the toot... | 07/25/1995 |
| 5410826 | Assembly and method for tooth tip retention A digging tooth assembly has first and second wedged members retaining a digging tooth tip on a tooth base. The improvement comprises a tension member, e.g., a bolt, coupled to the first member and engaging the second member. The bolt has an adjustable ef... | 05/02/1995 |
| 5320431 | Lubrication groove arrangement for a journal bearing The invention is an improvement in a machine having a bushing-type journal bearing and a bearing-supported component relatively rotatable one to the other. The bearing has a surface contacting the component and at least one lubrication groove formed in su... | 06/14/1994 |
| 5319292 | Method and apparatus for preventing motoring while braking The inventive method and machine are improvements in aspects of a material handling machine (such as an overhead travelling crane) having an electrically-powered traverse drive, e.g., a bridge drive. Such machine has (a) regenerative motor braking and (b)... | 06/07/1994 |
| 5251389 | Brace for maintaining relative arm-dipper angle The invention is an improvement in a machine such as a surface mining "shovel" having an arm, a bucket-like digging dipper and a brace. The latter is used to maintain a selected "rake angle" between the arm and the dipper. The brace has first and second e... | 10/12/1993 |
| 5245882 | Apparatus for drive component disconnection The invention involves a machine, e.g., a walking dragline having a drive gear, a driven member which loads (and wears) gear teeth unequally and an interconnecting shaft. The quill-mounted gear is separately supported by bearings. The shaft can be moved a... | 09/21/1993 |
| 5210473 | System with delay timer for motor load equalization The invention is an improvement in an AC adjustable frequency load-moving system of the type having a control circuit providing a motor speed signal and using command ramps to control each of plural AC squirrel cage motors. The invention helps assure subs... | 05/11/1993 |
| 4621742 | Boom extension storage means and mechanisms A mobile crane comprises a multi-section telescopic main boom and a boom extension pivotally connected to the point end of the main boom. The boom extension can be manually swung horizontally between an in-use position extending axially from the point end... | 11/11/1986 |
| 4573592 | Means to reduce oscillatory deflection of vehicle A rough terrain vehicle comprises a vehicle chassis, resilient terrain-engaging wheel assemblies connected to the chassis and enabling vertical and angular deflection of the chassis relative to the terrain during vehicle movement, a telescopic crane boom ... | 03/04/1986 |
| 4568233 | Storage and retrieval apparatus The storage and retrieval apparatus of this invention comprises parallel tracks, each normally supporting numerous upright storage bins that are in close proximity to one another and to bins on laterally adjacent tracks. Each bin is open at its front and ... | 02/04/1986 |
| 4545128 | Apparatus for checking alignment of tandem flangeless monorail wheels On a truck comprising tandem flangeless wheels riding on a single rail and four guide rollers rotatable on vertical axes, two at each side of the rail, crabbing and turning misalignments of the wheels are diagnosed from information about which rollers rot... | 10/08/1985 |
| 4540097 | Crane with outboard counterweight carrier Disclosed is a crane wherein a trailer-like counterweight carrier has a horizontal motion transmitting connection with a platform which is swivelably mounted on a crane base and which supports the boom and the mast of the crane. Guy connections between th... | 09/10/1985 |
| 4529066 | Safety brake for mast-type crane In a mast crane wherein a tension member controls the position of a carriage along an upright guide rail, the tension member is connected with a load transmitting element against which an abutment on the carriage bears down under carriage weight. A brake ... | 07/16/1985 |
| 4529094 | Articulation for tower crane boom that has a parking position The inner end of a tower crane boom is connected to the top of its tower by two lugs fixed on the tower, each having an upwardly opening slot, and two trunnions fixed on the inner end portion of the boom, one for each lug, each rotatably seatable in the r... | 07/16/1985 |
| 4523887 | Stacker crane for narrow aisles In a stacker crane having a trolley comprising a turntable rotatable about a vertical axis, a mast projecting down from the turntable for rotation and horizontal motion with it, and a load supporting device vertically positionable along the mast, the mast... | 06/18/1985 |
| 4496062 | Crane having stabilizing outriggers A mobile crane of the type having an upper revolvably mounted on an elongated main frame. The main frame has a central tub for mounting the upper and also has a series of ground-engaging wheels along the main frame and at either side thereof. Power-operat... | 01/29/1985 |
| 4469594 | High pressure hydraulic system and self-cleaning filter assembly therefor A hydraulically operated mining shovel comprises a stick which is pivotable in opposite directions by a pair of extendible/retractable double-acting hydraulic cylinders. A high-pressure hydraulic system is provided for operating and controlling the cylind... | 09/04/1984 |
| 4408746 | Hydraulically actuated winch assembly A hydraulically actuated winch assembly having a dual planetary gear system for driving a common ring gear from a power input shaft. Power from the shaft is divided through the two planetary gear systems for driving the common ring gear which is attached ... | 10/11/1983 |
| 4397396 | Truck crane having an elongated main frame A mobile truck crane having an elongated main frame that forms the carriage for the crane as well as forming a fore and aft elongated outrigger for stabilization in the crane operative position. A pair of transversely swingable outriggers are attached int... | 08/09/1983 |
| 4396126 | Telescoping crane boom Apparatus and method for extending a fly section of a telescopic crane boom which fly section does not have its own power extension/retraction unit. The crane boom comprises at least a first or fly section, a second section, and a third or base section. L... | 08/02/1983 |
| 4394913 | Crane having power operated outriggers and lock means therefor A crane of the type having a boom and which requires transversely swingable outriggers to stabilize the crane when the boom is in operation. Power operated means are provided between the main frame of the crane and the outriggers for swinging the outrigge... | 07/26/1983 |
| 4394912 | Mobile crane having telescoping outriggers and power operated screw means for same A mobile crane having an extensible boom which is swingable about both a vertical and horizontal axis and having telescoping outriggers that extend transversely of the main frame of the crane and which outriggers are also pivotally mounted about a vertica... | 07/26/1983 |
| 4386711 | Crane having stabilizer outriggers and vertically positionable jacks for same A crane having outriggers that can be extended transversely of the main frame of the crane, and a vertically positionable jack is located at the outer ends of the outriggers and include a vertical, threaded shaft having a ground engaging pad at its lower ... | 06/07/1983 |
| 4375936 | Stacker crane for movement of coils A crane for lifting and transporting a load such as a heavy metal coil. An overhead winch lifts and lowers a load carriage and the load attached thereto, and a powered wheeled trolley moves the load horizontally above a floor. Attached to the carriage is ... | 03/08/1983 |
| 4358239 | Warehouse crane including inclinable tote pan puller A warehouse crane comprises an elevationally positionable carriage, a shuttle guidably mounted on the carriage for transverse movement, and apparatus for moving a tote pan out of storage racks alongside either side of the crane and onto the carriage, the ... | 11/09/1982 |
| 4352622 | Warehouse crane with pin-engageable tote pans A warehouse crane with individual storage areas for containing tote pans, each tote pan having handles on its opposite end walls. A pair of reversibly driven, counter-rotating endless chains is mounted on the carriage for movement about a generally horizo... | 10/05/1982 |
| 4344497 | Override control for axle locking apparatus of mobile crane A pair of hydraulic locking cylinders for a vertically oscillatable wheel axle on the carrier frame of a mobile crane are interconnected and controlled by a hydraulic double-locking valve which is responsive to the centered or off-centered rotary position... | 08/17/1982 |
| 4337601 | High-strength light-weight boom section for telescopic crane boom A high-strength light-weight hollow boom section for a multi-section telescopic crane boom comprises a top wall, a bottom wall, and a pair of lateral walls, each lateral wall being located between the top wall and the bottom wall. Each of the four walls c... | 07/06/1982 |
| 4337868 | Telescopic crane boom having rotatable extend/retract screws A multisection hollow telescopic boom comprises a base section, an intermediate section and a fly section. A first elongated rotatable screw located within the boom has its base end rotatably mounted on the base end of the base section and engages a first... | 07/06/1982 |
| 4331418 | Double masted warehouse crane An operator's carriage on one mast of a two-masted warehouse crane and which carriage can be raised independently of the motion, position, or operability of a load carriage mounted on the second mast. The crane comprises, in addition to the two carriages ... | 05/25/1982 |
| 4318488 | Method of extending a jib of a telescopic crane Method for extending a jib of a telescopic crane which jib may be stored alongside a base section when not in use. The crane boom comprises at least the base section, a second section with linearly extendable power means, an extension pivotably mounted on... | 03/09/1982 |
| 4316528 | Mechanism for latchingly connecting telescoping members A stacker crane having an elevated trolley on which there is a hoist, a load member beneath the trolley is moved vertically by the hoist and is guided by a mast comprising a vertically fixed inner member projecting down from the trolley and an intermediat... | 02/23/1982 |
| 4309735 | Protective circuits for converter-supplied D.C. motor A d.c. motor whose armature is supplied from an a.c. power source through an a.c./d.c. thyristor converter and is subject to damaging commutator flash-over, as from loss of a.c. voltage during regeneration is provided with a protective circuit which inclu... | 01/05/1982 |
| 4298128 | Movable support for rotatable extend/retract screw in telescopic crane boom A telescopic boom comprises inner and outer boom sections; an elongated rotatable screw rotatably mounted on the outer section; a first thread on the screw engaged with a first nut on the inner boom section whereby screw rotation effects telescopic moveme... | 11/03/1981 |
