Patents by Inventor Burkhard Grobbel
Burkhard Grobbel 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: 8764593Abstract: A sound-damping unit for a sprocket has a mounting foot for connection to a sprocket and an elastic body placed on the mounting foot that is suitable for cushioning a chain running onto the sprocket. The elastic body is provided with a protective cap or protective layer. A sprocket according to the invention includes a circular sprocket disc having a number of teeth and tooth gaps in the circumferential direction. The sprocket is equipped with at least one sound-damping unit that is configured to reduce the noise upon a chain running onto said sprocket. The sound-damping unit is at least one sound damping unit as above.Type: GrantFiled: October 15, 2008Date of Patent: July 1, 2014Assignee: Ketten-Wulf Betriebs-GmbHInventor: Burkhard Grobbel
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Patent number: 8617014Abstract: Drive means for the polygonally-compensated drive of a sprocket, comprising two pulling means wheels (1, 2), a pulling means (3) running on them with an top span (31) and a bottom span (32), and a tensioning means acting on the pulling means (3), wherein the tensioning means comprises a first non-circular compensation wheel (4), which can come into contact with the top span (31), a second non-circular compensation wheel (5), which can come into contact with the bottom span (32), a rocker (6) adapted for rotatably receiving the first compensation wheel (4) and the second compensation wheel (5), wherein the rocker (6) is pivotably supported on a fixed bearing. The invention also relates to a chain drive, comprising at least a sprocket (7), a drive means, wherein the sprocket (7) is driven by the drive means, wherein the drive means is a drive means according to at least one of the claims 1 to 17.Type: GrantFiled: November 14, 2008Date of Patent: December 31, 2013Assignee: Ketten-Wulf Betriebs-GmbHInventor: Burkhard Grobbel
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Patent number: 8292058Abstract: An escalator includes a plurality of steps or panels, a chain for driving the steps or panels, at least one chain wheel around which the chain is deflected and wherein the chain, starting from the chain wheel, forms an upper strand and a lower strand. There is also provided a device for the polygonal compensation of the movement of the at least one chain wheel. The effective lever arm of the chain on the at least one chain wheel in the upper strand is substantially equal to the effective lever arm of the chain on the at least one chain wheel in the lower strand.Type: GrantFiled: May 26, 2011Date of Patent: October 23, 2012Assignee: Ketten-Wulf Betriebs-GmbHInventor: Burkhard Grobbel
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Patent number: 8292059Abstract: An escalator includes a plurality of steps or panels, a chain for driving the steps or panels, at least one chain wheel around which the chain is deflected and wherein the chain, starting from the chain wheel, forms an upper strand and a lower strand. There is also provided a device for the polygonal compensation of the movement of the at least one chain wheel. The effective lever arm of the chain on the at least one chain wheel in the upper strand is substantially equal to the effective lever arm of the chain on the at least one chain wheel in the lower strand.Type: GrantFiled: May 26, 2011Date of Patent: October 23, 2012Assignee: Ketten-Wulf Betriebs-GmbHInventor: Burkhard Grobbel
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Patent number: 8286778Abstract: An escalator includes a plurality of steps or panels, a chain for driving the steps or panels, at least one chain wheel around which the chain is deflected and wherein the chain, starting from the chain wheel, forms an upper strand and a lower strand. There is also provided a device for the polygonal compensation of the movement of the at least one chain wheel. The effective lever arm of the chain on the at least one chain wheel in the upper strand is substantially equal to the effective lever arm of the chain on the at least one chain wheel in the lower strand.Type: GrantFiled: July 27, 2007Date of Patent: October 16, 2012Assignee: Ketten-Wulf Betriebs-GmbHInventor: Burkhard Grobbel
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Publication number: 20110220456Abstract: An escalator includes a plurality of steps or panels, a chain for driving the steps or panels, at least one chain wheel around which the chain is deflected and wherein the chain, starting from the chain wheel, forms an upper strand and a lower strand. There is also provided a device for the polygonal compensation of the movement of the at least one chain wheel. The effective lever arm of the chain on the at least one chain wheel in the upper strand is substantially equal to the effective lever arm of the chain on the at least one chain wheel in the lower strand.Type: ApplicationFiled: May 26, 2011Publication date: September 15, 2011Applicant: KETTEN-WULF BETRIEBS GMBHInventor: BURKHARD GROBBEL
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Publication number: 20110220457Abstract: An escalator includes a plurality of steps or panels, a chain for driving the steps or panels, at least one chain wheel around which the chain is deflected and wherein the chain, starting from the chain wheel, forms an upper strand and a lower strand. There is also provided a device for the polygonal compensation of the movement of the at least one chain wheel. The effective lever arm of the chain on the at least one chain wheel in the upper strand is substantially equal to the effective lever arm of the chain on the at least one chain wheel in the lower strand.Type: ApplicationFiled: May 26, 2011Publication date: September 15, 2011Applicant: KETTEN-WULF BETRIEBS GMBHInventor: BURKHARD GROBBEL
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Publication number: 20100273589Abstract: A sound-damping unit for a sprocket has a mounting foot for connection to a sprocket and an elastic body placed on the mounting foot that is suitable for cushioning a chain running onto the sprocket. The elastic body is provided with a protective cap or protective layer. A sprocket according to the invention includes a circular sprocket disc having a number of teeth and tooth gaps in the circumferential direction. The sprocket is equipped with at least one sound-damping unit that is configured to reduce the noise upon a chain running onto said sprocket. The sound-damping unit is at least one sound damping unit as above.Type: ApplicationFiled: October 15, 2008Publication date: October 28, 2010Applicant: Ketten-Wulf Betriebs-GmbHInventor: Burkhard Grobbel
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Publication number: 20100255944Abstract: Drive means for the polygonally-compensated drive of a sprocket, comprising two pulling means wheels (1, 2), a pulling means (3) running on them with an top span (31) and a bottom span (32), and a tensioning means acting on the pulling means (3), wherein the tensioning means comprises a first non-circular compensation wheel (4), which can come into contact with the top span (31), a second non-circular compensation wheel (5), which can come into contact with the bottom span (32), a rocker (6) adapted for rotatably receiving the first compensation wheel (4) and the second compensation wheel (5), wherein the rocker (6) is pivotably supported on a fixed bearing. The invention also relates to a chain drive, comprising at least a sprocket (7), a drive means, wherein the sprocket (7) is driven by the drive means, wherein the drive means is a drive means according to at least one of the claims 1 to 17.Type: ApplicationFiled: November 18, 2008Publication date: October 7, 2010Applicant: KETTEN-WULF BETRIEBS-GMBHInventor: Burkhard Grobbel
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Publication number: 20090308712Abstract: An escalator includes a plurality of steps or panels, a chain for driving the steps or panels, at least one chain wheel around which the chain is deflected and wherein the chain, starting from the chain wheel, forms an upper strand and a lower strand. There is also provided a device for the polygonal compensation of the movement of the at least one chain wheel. The effective lever arm of the chain on the at least one chain wheel in the upper strand is substantially equal to the effective lever arm of the chain on the at least one chain wheel in the lower strand.Type: ApplicationFiled: July 27, 2007Publication date: December 17, 2009Applicant: KETTEN WULF BETRIEBS-GMBHInventor: Burkhard Grobbel