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(11)    Patent No :    AP 2238    (73) Applicant(s)       
(21)    Application No :    AP/P/2007/004131    TECHNOLOGICAL RESOURCES PTY. LIMITED, 120 Collins       
            Street, Melbourne, 3000, Victoria,       
                   
(22)    Filing Date :    31.08.2006    Australia       
(24)    Date of Grant &    26.05.2011           
                   
(45)    Publication :

(30)    Priority Data                    (72) Inventors   
    (33) Country    (31) Number    (32) Date    VAN KANN Frank Joachim, Australia   
    AU            2005905524    06.10.2005    WINTERFLOOD John, Australia   
    AU            2005906669    29.11.2005       
                           
    AU            2006900193    13.01.2006       
    et al                               
                                (74) Representative   
(84)    Designated State                   
                       
    BW    GM    GH    KE    LS    MW    MZ   NA   SL    FISHER CORMACK & BOTHA   
                                   
    SD    SZ    T Z    UG    ZM    ZW           
(51)    International    Classification    G06V 7/16 (2006.01)   

(54)    Title

Gravity gradiometer

(57)    Abstract

A gravity gradiometer is disclosed which has a sensor in the form of bars (41 and 42) which are supported on a mounting (5) which has a first mount section (10) and a second mount section (20). A first flexure web (33) pivotally couples the first and second mount sections about first axis. The second mount has first part (25), a second part (26) and a third part (27). The parts (25 and 26) are connected by second flexure web (37) and the

parts (26 and 27) are connected by third flexure web (35). The bars (41 and 42) are located in housings (45 and 47) and form a monolithic structure with

the housings (45 and 47) respectively. The housings (45 and 47) are connected to opposite sides of the second mount section 20. The bars (41

and 42) are connected to their respective housings by flexure webs (59).

(56)  Documents Cited :    US 5 668 315 A

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