Patent ID: 6848314

Claim:
A device comprising a housing ( 20 ) having a primary surface ( 22 ) attachable to an impact transmissive body ( 16 ), and a vibrations sensitive transducer ( 50 ) for picking up vibrations from the impact transmissive body ( 16 ); the device ( 10 ) being characterized in that the device ( 10 ) is a data receiving device for receiving data encoded as impulses transmitted through the impact transmissive body ( 16 ); said vibrations sensitive transducer ( 50 ) constitutes part of a floating mass transducer assembly ( 40 ) and having a pick-up portion ( 42 ) which is biased towards a surface of rigid body being either said impact transmissive body ( 16 ) or a vibrations transmissive member ( 151 ) of the device which is a vibration receiving association with said impact transmissive body, said assembly having a freedom of movement permitting it to vibrate independently from said rigid body ( 16 , 151 ).