Patents by Inventor Ralf Eising
Ralf Eising has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7607707Abstract: The invention concerns a load hook with a hook fastened to a hook tackle that can be safely handled. A cover region is arranged at least partially between the hook tackle and the hook, such that the hook is covered starting at the outer contour of the hook tackle.Type: GrantFiled: December 22, 2006Date of Patent: October 27, 2009Assignee: Demag Cranes & Components GmbHInventors: Ralf Eising, Udo Gersemsky, Uwe Lichtenvort, Thilo Walloschek
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Patent number: 7422542Abstract: A method for monitoring a chain pulley block and a chain pulley block apparatus with an electric actuator motor (2) that is connected at the drive side to a transmission (7) across a sliding clutch (14). In order to achieve a safe operation of the chain pulley block, the speed of the transmission (7) is determined via a sensor (18), the determined speed of the transmission (7) is compared in a control device (19) to the operating speed of the actuator motor (2) as determined from rated duty of the actuator motor (2) and if a deviation is found between the speed of the transmission (7) and the operating speed, allowing for tolerances and any transmission ratio of the transmission (7), the actuator motor (2) is switched off.Type: GrantFiled: August 24, 2004Date of Patent: September 9, 2008Assignee: Demag Cranes & Components GmbHInventors: Holger Freitag, Oliver Moll, Erik Appel, Ralf Eising, Udo Gersemsky, Burkhard Hasenack, Anton Münzebrock, Giuliano Persico
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Publication number: 20070176446Abstract: The invention concerns a load hook with a hook fastened to a hook tackle that can be safely handled. A cover region is arranged at least partially between the hook tackle and the hook, such that the hook is covered starting at the outer contour of the hook tackle.Type: ApplicationFiled: December 22, 2006Publication date: August 2, 2007Applicant: DEMAG CRANES & COMPONENTS GMBHInventors: Ralf Eising, Udo Gersemsky, Uwe Lichtenvort, Thilo Walloschek
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Patent number: 6966545Abstract: A chain block with a drive motor (2) with a motor shaft (11), which is connected at the take-off side via a slip clutch (50) to a transmission input shaft (14), having a first gear (18a) and mounted in a housing (1) by pivot bearings (13, 13a), of an at least one-stage transmission (3). In order to create a simple design of chain block with a slip clutch, the transmission input shaft (14) is to be mounted floating in the pivot bearings (13, 13a) in order to change the frictional force of the slip clutch (50).Type: GrantFiled: September 22, 2003Date of Patent: November 22, 2005Assignee: Demag Cranes & Components GmHBInventors: Ralf Eising, Oliver Moll, Torsten Sattler, Thilo Walloschek, Rüdiger Ostholt
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Patent number: 6964409Abstract: A chain block with a drive motor (2) and with a transmission (3), connected to the drive motor (2) at the take-off side, with a transmission output shaft (4), on which a chain wheel (5) is rigidly arranged for pulling a chain. In order to create a compact chain block, the chain wheel (5) faces the drive motor (2) at its take-off end face (19) and the outer circumference of the chain wheel (5) reaches into the imaginary extension of the outer contour of the drive motor (2).Type: GrantFiled: September 22, 2003Date of Patent: November 15, 2005Assignee: Demag Cranes & Components GmbHInventors: Erik Appel, Ralf Eising, Jürgen Heun, Jörg Lindemaier, Oliver Moll, Klaus Wissing, Thilo Walloschek, Rüdiger Ostholt
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Publication number: 20050065692Abstract: A method for monitoring a chain pulley block and a chain pulley block apparatus with an electric actuator motor (2) that is connected at the drive side to a transmission (7) across a sliding clutch (14). In order to achieve a safe operation of the chain pulley block, the speed of the transmission (7) is determined via a sensor (18), the determined speed of the transmission (7) is compared in a control device (19) to the operating speed of the actuator motor (2) as determined from rated duty of the actuator motor (2) and if a deviation is found between the speed of the transmission (7) and the operating speed, allowing for tolerances and any transmission ratio of the transmission (7), the actuator motor (2) is switched off.Type: ApplicationFiled: August 24, 2004Publication date: March 24, 2005Inventors: Holger Freitag, Oliver Moll, Erik Appel, Ralf Eising, Udo Gersemsky, Burkhard Hasenack, Anton Munzebrock, Giuliano Persico
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Publication number: 20050043132Abstract: The invention concerns a chain pulley block with a chain wheel for positive-locking transmission of the lift force to the chain and a chain guide arranged in the region of the chain wheel, for guiding the chain, especially a round-link chain, on the chain wheel. In order to make it fast, easy and inexpensive to replace wearing parts, such as chain (3), chain wheel (4) and chain guide (2), it is proposed that the chain guide (2), the chain wheel (4) and the chain (3) be assembled into a structural unit (1), which is removably fastened to the chain pulley block (7).Type: ApplicationFiled: August 2, 2004Publication date: February 24, 2005Inventors: Oliver Moll, Jurgen Heun, Ralf Eising, Udo Gersemsky, Bernhard Norpoth, Erik Appel, Klaus Wissing, Torsten Sattler, Hansjurgen Linde, Thilo Walloshek
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Publication number: 20040149971Abstract: A chain block with a drive motor (2) and with a transmission (3), connected to the drive motor (2) at the take-off side, with a transmission output shaft (4), on which a chain wheel (5) is rigidly arranged for pulling a chain. In order to create a compact chain block, the chain wheel (5) faces the drive motor (2) at its take-off end face (19) and the outer circumference of the chain wheel (5) reaches into the imaginary extension of the outer contour of the drive motor (2).Type: ApplicationFiled: September 22, 2003Publication date: August 5, 2004Inventors: Erik Appel, Ralf Eising, Jurgen Heun, Jorg Lindemaier, Oliver Moll, Klaus Wissing, Thilo Walloschek, Rudiger Ostholt
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Publication number: 20040149972Abstract: A chain block with a drive motor (2) with a motor shaft (11), which is connected at the take-off side via a slip clutch (50) to a transmission input shaft (14), having a first gear (18a) and mounted in a housing (1) by pivot bearings (13, 13a), of an at least one-stage transmission (3). In order to create a simple design of chain block with a slip clutch, the transmission input shaft (14) is to be mounted floating in the pivot bearings (13, 13a) in order to change the frictional force of the slip clutch (50).Type: ApplicationFiled: September 22, 2003Publication date: August 5, 2004Inventors: Ralf Eising, Oliver Moll, Torsten Sattler, Thilo Walloschek, Rudiger Ostholt
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Patent number: 6241215Abstract: A winch including a casing for accommodating an electric motor, a gearbox and a roller for winding and unwinding a traction member. In order to provide a cost-effective flat winch which can be transported by a single person and used universally, in particular for the domestic sector, the casing has a box-like configuration to exhibit a shape and size of a suitcase or attaché case, with the casing having opposite flat outer sides, with one outer side having attached thereon a suspension member, and the other outer side being formed with an opening for passage of the traction member. The electric motor, the gearbox and the roller are arranged in the casing and extend in a common plane, with the casing including a handle to allow transport of the winch by a person. The electric motor may be designed as a universal motor, and connected via a belt drive to the gearbox which is designed as a self-locking worm drive.Type: GrantFiled: October 26, 1999Date of Patent: June 5, 2001Assignee: Mannesmann AGInventors: Udo Gersemsky, Uwe Lichtenvort, Giuliano Persico, Heinz Flaig, Jürgen Heun, Ralf Eising
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Patent number: 6050198Abstract: A travelling mechanism for a rail-movable lifting device includes a carrier with running wheels which roll on a longitudinally extending running surface of a rail. A double lever is pivotally mounted on the carrier. A drivable friction wheel that is positionable on a longitudinally extending friction surface of the rail is rotatably mounted on the double lever. An opposing side of the double lever supports the lifting device, whereby the double lever presses the friction wheel against the friction surface of the rail by a force under the weight of the lifting device.Type: GrantFiled: March 13, 1998Date of Patent: April 18, 2000Assignee: Mannesmann AktiengesellschaftInventors: Udo Gersemsky, Alfred Fanger, Ralf Eising
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Patent number: 6036248Abstract: A load-supporting apparatus, includes a housing, a load hook defining a throat area and swingably mounted in the housing for rotation in a vertical plane between a locked stand-by position in which the load hook is disengaged from a pick-up eyelet of a load and a locked load-receiving position in which the load hook engages the pick-up eyelet of the load. Operatively connected to the load hook is a centering unit for effecting a rotation of the load-bearing between the stand-by and load-receiving positions when the centering unit encounters a resistance, with the centering unit closing off the throat area of the load hook after swinging of the load hook into the load-receiving position.Type: GrantFiled: January 29, 1999Date of Patent: March 14, 2000Assignee: Mannesmann AGInventors: Alfred Fanger, Udo Gersemsky, Ralf Eising