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Herder, J.L. (author), Tolou, N. (author)Energy harvester comprising a mass (2) that is subjectable to environmental forces for bringing it into the status of a moving mass, and means (5) linked to the mass (2) for converting and storing of energy embodied in the moving mass, which means (5) are arranged for subsequent release of said energy, wherein the mass (2) is part of a compliant...patent 2013
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Lassooij, J. (author), Tolou, N. (author), Tortora, G. (author), Caccavaro, S. (author), Menciassi, A. (author), Herder, J.L. (author)This article presents the design of a newly developed 2DoF robotic arm with a novel statically balanced and bi-stable compliant grasper as the end effector for laparoscopic surgery application. The arm is based on internal motors actuating 2 rotational DoFs: pitch and roll. The positive stiffness of the monolithic grasper has been compensated...journal article 2012
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Tolou, N. (author), Herder, J.L. (author)Micro-electromechanical system (MEMS) comprising a substrate or substrate parts, and a compliant first segment or segments within the substrate or substrate parts with a predefined positive stiffness, wherein the first segment or segments is or are statically balanced. This is embodied by applying a second segment or segments within the...patent 2012
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- Steutel, P. (author), Kragten, G.A. (author), Herder, J.L. (author) patent 2012
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Simi, M. (author), Tolou, N. (author), Valdastri, P. (author), Herder, J.L. (author), Menciassi, A. (author), Dario, P. (author)A novel compliant Magnetic Levitation System (MLS) for a wired miniature surgical camera robot was designed, modeled and fabricated. The robot is composed of two main parts, head and tail, linked by a compliant beam. The tail module embeds two magnets for anchoring and manual rough translation. The head module incorporates two motorized donut...journal article 2012
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- Birglen, L. (author), Kragten, C.A. (author), Herder, J.L. (author) journal article 2010
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Kragten, G.A. (author), Meijneke, C. (author), Herder, J.L. (author)There is a lack of agreement in the literature as to what exactly quantifies the performance of underactuated hands. This paper proposes two benchmark tests to measure the ability of underactuated hands to grasp different objects and the ability to hold the objects when force disturbances apply. The first test determines the smallest and largest...journal article 2010
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Herder, J.L. (author), Barrari, A. (author), Tolou, N. (author)Yet another journal? And what is the windmill about? Those are two questions that we heard a lot lately. Yes, another journal, or rather, a different journal, called Mechanical Sciences (MS). The main difference is that the journal is open access, of which there are not many in the field of mechanical sciences. Grant agencies more and more...journal article 2010
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Herder, J.L. (author), Van der Wijk, V. (author)The invention relates to a delta robot comprising a stationary base (2) and a movable platform (3) that is connected to the base with three chains of links (4,5,6), and comprising a balancing system incorporating at least one pantograph (7) for balancing the robot's center of mass, wherein the at least one pantograph has a first free extremity ...patent 2010
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Herder, J.L. (author), Maij, E. (author)The invention relates to a mechanical device for tissue- regeneration inside a patient, comprising means (2, 3) to place a scaffold for the tissue under mechanical stress. Said means comprise a first device-part (2) and a second device-part (3) which parts are arranged to be movable with respect to each other, and wherein the first device-part...patent 2010
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Tolou, N. (author), Herder, J.L. (author)The deflection of compliant mechanism (CM) which involves geometrical nonlinearity due to large deflection of members continues to be an interesting problem in mechanical systems. This paper deals with an analytical investigation of large deflections in compliant mechanisms. The main objective is to propose a convenient method of solution for...journal article 2009
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Wisse, B.M. (author), Barents, R. (author), Herder, J.L. (author), Van Dorsser, W.D. (author)The invention relates to an apparatus for exerting a force on a load, comprising at least a first spring system and a second spring system, which two spring systems are coupled with the load and produce forces that are applied to the load, wherein an adjusting device is provided coupled with the load, which is equipped with at least one coupling...patent 2009
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Kusuma, G. (author), Herder, J.L. (author)The invention relates to a foldable container (1) having a bottom plate (2), upstanding long sidewalls (3) and upstanding short sidewalls (4) that are connected to the bottom plate with a hinge, and an optionally detachable roof (5), wherein at least one of the long sidewalls and short sidewalls and the bottom plate are connected to a balancing...patent 2009
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Van Dorsser, W.D. (author), Herder, J.L. (author), Wisse, B.M. (author), Barents, R. (author)The invention relates to a balancing device for a mass, comprising an arm that is adjustable about a pivoting point and with which the mass is coupled, and an adjustable spring system that is coupled with the arm, which spring system comprises at least one spring, wherein the spring system comprises an adjusting mechanism that is connected with...patent 2007
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Herder, J.L. (author), Vrijlandt, N. (author), Antonides, T. (author), Cloosterman, M. (author), Mastenbroek, P.L. (author)This article describes the development of a mobile arm support for people with muscular diseases. The arm support is spring-balanced, with special attention on reduction of operating effort (high balancing quality and low friction), functionality (large range of motion), and aesthetics (inconspicuous design). The spring settings can be adjusted...journal article 2006
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Herder, J.L. (author), Gosselin, C.M. (author)System comprising a moving part connected to a stationary part comprises a compensatory weight and compensatory rotor to counteract the reaction forces and moments acting on the stationary part when the motion of the moving part varies, where the weight and rotor form a single unitpatent 2006
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Oosterom, R. (author), Van der Pijl, A.J. (author), Bersee, H.E.N. (author), Van der Helm, F.C. (author), Herder, J.L. (author)The invention relates to a joint prosthesis (10), for example, a knee joint or shoulder joint prosthesis comprising a first, socket-holding prosthesis part (11) for attachment to a first bone (12) and a second, ball-holding prosthesis part (13) for attachment to a second bone (14) that intermates with the first prosthesis part, wherein the first...patent 2006
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- Herder, J.L. (author) doctoral thesis 2001
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De Visser, H. (author), Herder, J.L. (author)This paper presents the design of a body-powered voluntary closing prosthetic hand. It is argued that the movement of the fingers before establishing a grip is much less relevant for good control of the object held than the distribution of forces once the object has been contacted. Based on this notion, the configurations of forces on the...journal article 2000
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Herder, J.L. (author), Tuijthof, G.J. (author)The object (2) is supported on the end of one arm (4). The arm is an extension of one side of a hinged parallelogram of rods (7, 8, 9, 12). The corner of the parallelogram opposite the end (10) of the carrying arm in attached to a stationary pivot point (3). Springs (5, 14) in tension are connected between the parallelogram and two other...patent 2000