Class / Patent application number | Description | Number of patent applications / Date published |
248571000 | Constant thrust | 7 |
20080210842 | BALANCING DEVICE - 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 the at least one spring, which adjusting mechanism is designed for adjusting the at least one spring so as to aid balancing the mass that is coupled with the arm, wherein a predetermined energy content of the spring system remains substantially the same. | 09-04-2008 |
20100006737 | Device for Adjusting the Prestress of an Elastic Means Around a Predetermined Tension or Position - A device for adjusting the prestress of an elastic means around a predetermined tension or position can especially be used to adjust the height of and the relief force acting on a weight. A mechanic adjustment unit is connected in parallel to the elastic means to preadjust the value of the predetermined tension comprising a movable portion engaging the connection portion between elastic means and adjustment unit and a force exerting element being attached at said movable portion. The mechanic adjustment unit is in an instable equilibrium position at said predetermined tension or position, the movement of the movable portion being such that the force exerting element adds an adjustment or compensation force upon deviation of the predetermined tension or position of the elastic means. | 01-14-2010 |
20100108852 | CONSTANT BEARER - The invention relates to a constant bearer ( | 05-06-2010 |
20110303818 | LIFT STRUT WITH MECHANICAL SPRING ELEMENT - An extendable and retractable lift strut includes a support tube, a guide rod fixedly attached at the support tube, an extension tube that is extendable and retractable relative to the support tube and guide rod, and a biasing element that biases or urges the extension tube towards an extended position relative to the support tube. The biasing element may be a compression spring having a coiled wire formed of a shape memory alloy material. The biasing element provides a substantially constant biasing force over substantially the entire range of extension and retraction of the extension tube relative to the support tube. A locking mechanism may be disposed in the extension tube and may be selectively actuatable to lock relative to the guide rod to limit movement of the extension tube relative to the support tube. | 12-15-2011 |
20120037785 | Spring arm device - The invention provides a spring arm device, comprising: a parallelogram linkage mechanism composed of a mobile side, a fixed side in parallel with the above-mentioned mobile side, an upper arm and a load arm respectively connected with the mobile side and the fixed side; a spring, one end of which is connected with the fixed side or the upper arm while the other end is connected with the mobile side or the load arm or the hinge joint between the mobile side and the fixed side; a pull rod used for installing the above-mentioned spring; a copular axle used for positioning the above-mentioned pull rod and a retainer used for installing the above mentioned copular axle; wherein, the above-mentioned retainer is positioned on the mobile side, or on the load arm or on the hinge joint between the mobile side and the load arm. Through a design to the copular axle and the retainer, the device ensures that the copular axle dynamically changes its position during rolling motion, and finishes geometric compensation for the spring's tensile force, thus realizing isoelasticity property. The device has the advantages of simplifying structure, reducing production cost, improving reliability and simplifying operation. | 02-16-2012 |
20120112035 | Height-Adjustable Pedestal - The invention relates to a height-adjustable pedestal comprising a height adjustable pedestal platform, a spring device that provides a spring force according to a corresponding spring characteristic, and a lever mechanism that is interconnected between the spring device and the pedestal platform in such a way that the spring force is transferred by the lever mechanism to the pedestal platform in the form of a lifting force that counteracts the weight force of the pedestal platform, in order to facilitate the height-adjustment of the pedestal platform, wherein the lever mechanism is configured such that it at least partially compensates for a variation of the spring force that occurs according to the spring characteristics. | 05-10-2012 |
20120160984 | GRAVITY COMPENSATION APPARATUS - A gravity compensation apparatus is provided, including a force output device, an axis and an arm with the axis as rotational center. The present invention is to output a force via the force output device to the arm when the arm contacts the force output device. When the arm rotates in the first or second quadrants, the contact point between the arm and the force output device will change continuously so that the force rotation speed of the force output device, the effective length of the lever arm and the force-applying angle will also change accordingly. Through appropriate design, the generated torque value can show a non-linearly increasing curve approximately to a sin function between 0-90°. | 06-28-2012 |