47results about How to "Good elastic properties" patented technology

Method of making a wavy wood element (B) from a wood element (A), wherein the method comprises at least steps (H1) to (H4):(H1) providing a wood element (A), which comprises fibers and lignin on or between said fibers;(H2) heating the wood element (A) to a temperature which is sufficient to soften or melt at least a part of the lignin;(H3) deforming the wood element heated in step (H2) such that a wavy wood element (B) is formed;(H4) cooling the wood element deformed in step (H3); characterized in that the deforming in step (H3) is performed such that the ratio of the wave height to the thickness of the wavy wood element (B) equals or is more than 2:1; wherein the term thickness signifies the shortest distance between an upper side and the respective lower side of the wavy wood element (B), and the term wave height signifies the shortest distance between two imaginary planes which run in parallel to one another between which the wavy wood element (B) may be arranged such that the waves are positioned between said planes; and wherein the wood element (A) consists of unglued wood or unglued wood fibers.

The present invention provides a phase insulator for a stator of a motor, which insulates between stator coils. The stator has plural stator coils inserted in slots in a stator core. The phase insulator insulates stator coils from each other. The phase insulator includes insulating sheet portions and bridge portions. The insulating sheet portions are disposed at both end portions of the stator core for insulating between the coil ends of the stator coils. The insulating sheet portions are made of a first material. The bridge portions connect the insulating sheet portions. The bridge portions are inserted in the slots of the stator core. The bridge portions are made of a second material. The second material has higher elastic characteristics than the first material.

The present invention relates to a tool holder (1), the housing section (5) of which comprises clamping means (9), provided concentrically with a rotational axis (7) of the tool holder (1) and defining a housing opening (13). The clamping means (9) can be radially adjusted between a release position and a clamping position, in which the clamping means (9) exert a radial compression seating force on a hilt (15) in the clamping position. The clamping means (9) are provided with a clamping surface (17), which makes a surface contact with the outer circumferential surface (19) of the hilt (15) in the clamping position. The region of the tool holder (1) forming the clamping surface (17) comprises a plurality of groove parts, which, viewed in the direction of the rotational axis, are connected in one piece, forming support regions at an axial separation from each other, projecting towards the rotational axis (7), the peak surfaces (27) of which, facing the rotational axis, form the cylindrical clamping surface.

A liquid pump, in particular a water pump, comprises a pump housing, which has a thrust bearing seat, a bearing bolt and a bearing mounted on the bearing bolt. In this case, a thrust washer is arranged between the thrust bearing seat of the pump housing and the bearing. Furthermore, a flexible washer is arranged between the thrust bearing seat and the thrust washer.

The invention provides a metal bipolar plate for a proton exchange membrane fuel battery and an electric pile formed by the metal bipolar plate. The metal bipolar plate is formed through the combination of a cathode unipolar plate and an anode unipolar plate made of thin metal plates, wherein the cathode unipolar plate and the anode unipolar plate are arranged in a back-to-back way, fuel gas cavities (1), cooling medium cavities (3) and oxidant gas cavities (2), which are correspondingly coincided are arranged on both the left sides and the right sides of the plate bodies of the cathode unipolar plate and the anode unipolar plate, flow field zones are arranged in the middles of the plate bodies, and a plurality of arc-shaped bosses and a plurality of arc-shaped grooves, which correspond to each other, are arranged in the flow field zones. The electric pile is formed through the overlapping of a plurality of single batteries which are connected in series, and each single battery consists of the cathode unipolar plate, the anode unipolar plate and a membrane electrode assembly between the cathode unipolar plate and the anode unipolar plate. The great contact of the metal bipolar plate with the membrane electrode assembly is well ensured through the self elastic deformation of the metal bipolar plate. The stress relaxation of the electric pile can be automatically compensated, and clamp force for the normal work of the electric pile can be maintained, so that the performance and the service life of the proton exchange membrane fuel battery are improved and prolonged.