Patents by Inventor Harri Lehtonen
Harri Lehtonen 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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Publication number: 20130233956Abstract: A method for mounting a jaw die plate of a jaw crusher detachably against a front end wall of the crusher by means of a fastening device operated from outside a side wall of the crusher. The die plate is secured in its place by means of friction between the fastening device and a counter surface of the front end wall and friction between the fastening device and a counter surface of the die plate. The fastening device of the jaw crusher includes a wedge piece having a first pressing surface to be fitted against the counter surface of the die plate secured against the front end of the crusher, and, in addition to that, a second pressing surface to be fitted against the counter surface of the front end wall. The wedge piece is movable towards both counter surfaces and away from the same by means of the tightening means.Type: ApplicationFiled: April 17, 2013Publication date: September 12, 2013Applicant: Metso Minerals, Inc.Inventors: Harri LEHTONEN, Janne Keskinen
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Patent number: 8109454Abstract: A crusher comprising at least a first crushing blade and a second crushing blade which are arranged to be rotary, one of the crushing blades being also arranged to move back and forth along a substantially harmonic linear path, and the rotating axes of the first crushing blade and the second crushing blade being parallel with the linear direction of movement of the second crushing blade. The second crushing blade is adjusted to move substantially harmonically back and forth along a linear path.Type: GrantFiled: June 7, 2007Date of Patent: February 7, 2012Assignee: Metso Minerals Inc.Inventors: Harri Lehtonen, Keijo Viilo
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Patent number: 7942358Abstract: A crusher and a method for controlling a crusher having a first crushing member and a second crushing member defining a crusher setting of a crushing cavity into which material to be crushed is being fed. The method having the steps of: measuring continuously instantaneous load on the crusher; recording instantaneous load peaks exceeding a predetermined target level for the load peaks; keeping track of the number of the load peaks exceeding the predetermined target level during a predetermined period of time; and controlling loading of the crusher on the basis of the number of the load peaks experienced by the crusher during the predetermined period of time.Type: GrantFiled: November 2, 2005Date of Patent: May 17, 2011Assignee: Metso Minerals Inc.Inventors: Ari Posti, Kari Kuvaja, Ilpo Nieminen, Jarmo Eloranta, Harri Lehtonen
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Publication number: 20100252395Abstract: A method for moving a processing device, a frame of a processing device and a processing device, which is moved on a base. The processing device comprises at least one processing unit and a frame, to which the processing unit is attached, as well as at least four legs articulated to the frame. The legs comprise support plates settable against the base. The legs are settable into a support phase, where the support plate settles against the base and into a transfer phase, where the support plate is off the base. The processing device is moved without lowering the frame onto the base so that the legs are controlled to settle to the support phase and the transfer phase alternately so that at least three legs are in the support phase when the processing device moves.Type: ApplicationFiled: December 19, 2007Publication date: October 7, 2010Applicant: Metso Minerals, Inc.Inventors: Harri Lehtonen, Tuomas Jokioinen, Matti Peltola, Timo Mustonen, Markku Pusenius, Antti Peltola, Harri Niemi
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Publication number: 20100163657Abstract: A crusher comprising at least a first crushing blade and a second crushing blade which are arranged to be rotary, one of the crushing blades being also arranged to move back and forth along a substantially harmonic linear path, and the rotating axes of the first crushing blade and the second crushing blade being parallel with the linear direction of movement of the second crushing blade. The second crushing blade is adjusted to move substantially harmonically back and forth along a linear path.Type: ApplicationFiled: June 7, 2007Publication date: July 1, 2010Applicant: Metso Minerals, Inc.Inventors: Harri Lehtonen, Keijo Viilo
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Publication number: 20090095827Abstract: A crusher and a method for controlling a crusher comprising a first crushing member and a second crushing member defining a crusher setting of a crushing cavity into which material to be crushed is being fed. The method comprises the step of: measuring continuously instantaneous load on the crusher; recording instantaneous load peaks exceeding a predetermined target level for the load peaks; keeping track of the number of the load peaks exceeding the predetermined target level during a predetermined period of time; and controlling loading of the crusher on the basis of the number of the load peaks experienced by the crusher during the predetermined period of time.Type: ApplicationFiled: November 2, 2005Publication date: April 16, 2009Applicant: Metso Minerals Inc.Inventors: Ari Posti, Kari Kuvaja, Ilpo Nieminen, Jarmo Eloranta, Harri Lehtonen
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Publication number: 20050173574Abstract: A method for mounting a jaw die plate of a jaw crusher detachably against a front end wall of the crusher by means of a fastening device operated from outside a side wall of the crusher. The die plate is secured in its place by means of friction between the fastening device and a counter surface of the front end wall and friction between the fastening device and a counter surface of the die plate. The fastening device of the jaw crusher includes a wedge piece having a first pressing surface to be fitted against the counter surface of the die plate secured against the front end of the crusher, and, in addition to that, a second pressing surface to be fitted against the counter surface of the front end wall. The wedge piece is movable towards both counter surfaces and away from the same by means of the tightening means.Type: ApplicationFiled: September 25, 2003Publication date: August 11, 2005Applicant: Metso Minerals (Tampere) OYInventors: Harri Lehtonen, Janne Keskinen
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Patent number: 6402072Abstract: A method for mounting a jaw die plate (9) of a jaw crusher detachably against a front end wall (10) of the crusher by means of a fastening device (18) operated from outside a side wall (7) of the crusher. The die plate (9) is secured in its place by means of friction between the fastening device (18) and a counter surface (22) of the front end wall (10) and friction between the fastening device (18) and a counter surface (23) of the die plate. The fastening device of the jaw crusher includes a wedge piece (18) having a first pressing surface to be fitted against the counter surface (23) of the die plate (9) secured against the front end (10) of the crusher, and, in addition to that, a second pressing surface to be fitted against the counter surface (22) of the front end wall. The wedge piece (18) is movable towards both counter surfaces (23, 22) and away from the same by means of the tightening means (19, 24, 20).Type: GrantFiled: June 16, 2000Date of Patent: June 11, 2002Assignee: Metso Minerals (Tampere) OyInventors: Harri Lehtonen, Janne Keskinen
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Publication number: 20020038833Abstract: A method for mounting a jaw die plate (9) of a jaw crusher detachably against a front end wall (10) of the crusher by means of a fastening device (18) operated from outside a side wall (7) of the crusher. The die plate (9) is secured in its place by means of friction between the fastening device (18) and a counter surface (22) of the front end wall (10) and friction between the fastening device (18) and a counter surface (23) of the die plate. The fastening device of the jaw crusher includes a wedge piece (18) having a first pressing surface to be fitted against the counter surface (23) of the die plate (9) secured against the front end (10) of the crusher, and, in addition to that, a second pressing surface to be fitted against the counter surface (22) of the front end wall. The wedge piece (18) is movable towards both counter surfaces (23, 22) and away from the same by means of the tightening means (19, 24, 20).Type: ApplicationFiled: December 5, 2001Publication date: April 4, 2002Inventors: Harri Lehtonen, Janne Keskinen
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Patent number: 5377810Abstract: The invention relates to a conveyor system, which has several conveyors (3/4) joined to together into a chain. There is an articulation (9) at the joining point of the conveyors, which allows the conveyors to turn relative to each other. The chain may be formed and disassembled rapidly. The system is applicable to be used e.g. at mines.Type: GrantFiled: June 2, 1993Date of Patent: January 3, 1995Assignee: Lokomo OyInventors: Harri Lehtonen, Jorma Kempas