Patent ID: 6502057
Filing Date: 2002-12-31
Classification: G01B,G01D,G08C

Abstract:
A transmitter unit to be attached to measuring instruments, the measuring instruments having a main beam equipped with jaws and a slider traveling along the main beam and equipped with jaws to contact with a measurement artifact together with the jaws on the main beam, the slider having a signal processor to calculate measurement data based on traveling displacement of the slider along the main beam, a digital display to display measurement data calculated by the signal processor, and an output connector to output measurement data calculated in the signal processor, the transmitter unit comprising:a main unit accommodating a transmission circuit inside to transmit measurement data by wireless and an attachment module to retain the main unit attachably and detachably onto second side of the slider opposite to first side of the slider on which the digital display is equipped, wherein profile of the main unit is formed at least not to protrude beyond first side profile of the slider on condition that the main unit is retained onto second side of the slider, wherein the attachment module is constituted to be plugged into and unplugged from the output connector, and has a connector to connect the output connector with the transmission circuit in the main unit, wherein the attachment module consists of a first retainer extended from the main unit striding over the slider and a second retainer extended square from a first retainer end and parallel to the main unit, wherein the second retainer can be plugged into and unplugged from the output connector on the slider, and has the connector on an end to be connected with the output connector, wherein a locking means to restrict movement of the second retainer in direction of coming off from the output connector is provided on a side of the main unit opposite to a side on which the first retainer is fitted, and wherein the locking means consists of a guide groove toward the slider, which is formed on a side of the main unit opposite to a side on which the first retainer is fitted, and a locking piece, which can project and retract over fourth side of the slider opposite to third side equipped with the output connector by sliding along the guide groove.