公开(公告)号：EP1330411A4

公开(公告)日：2006-02-01

申请号：EP01980048

申请日：2001-10-19

申请人： SILVERBROOK RES PTY LTD

发明人： MCAVOY G J ,  SILVERBROOK K

IPC分类号： B81C1/00 ,  B32B9/00 ,  B41J2/045 ,  B81B3/00 ,  B81B7/02 ,  B81C20060101 ,  B81C99/00 ,  F03G7/06 ,  H01H1/00 ,  H02N10/00

CPC分类号： B81C99/006 ,  B41J2/14427 ,  B81B3/0024 ,  B81B3/0035 ,  B81B2201/038 ,  F03G7/06 ,  F05C2203/0813 ,  F05C2203/083 ,  F05C2251/04 ,  F05C2251/044 ,  F05C2251/046 ,  H01H1/0036 ,  H01H2061/006 ,  H01H2061/008

摘要： The invention concerns design of thermoelastic actuators incorporating an expansive element formed from material selected in accordance with a procedure involving the derivation of an indicator of the material's potential effectiveness for each application. Indicator ε is derived from: εη=Eη2T/ςC where E is Young's modulus of the material, η is coefficient of thermal expansion, T is maximum operating temperature, ς is density and C is specific heat capacity. Elements may be selected from a group including: borides, carbides, nitrides or silicides of chromium, molybdenum, niobium, tantalum, titanium, tungsten, vanadium or zirconium.