Servicing equipment for nuclear reactors

Claim 1

VIEWING APPARATUS COMPRISING ELONGATED SUPPORT MEANS HAVING A SUSPENSION SECTION AND A HEAD SECTION INTERCONNECTED BY AN ARM, SAID ARM BEING CONNECTED TO ONE END PORTION OF THE SUSPENSION SECTION BY A JOINT FOR PIVOTAL MOVEMENT ABOUT AN AXIS TRANSVERSE TO THE LONGITUDINAL AXIS OF THE SUSPENSION SECTION AND SAID HEAD SECTION BEING CONNECTED TO ONE END PORTION OF THE ARM BY A JOINT FOR PIVOTAL MOVEMENT ABOUT AN AXIS TRANSVERSE TO THE LONGITUDINAL AXIS OF THE ARM, SAID JOINTS CONNECTING SAID ARM TO SAID HEAD SECTION AND SAID SUSPENSION SECTIONS BEING SO FORMED AND OPERABLE WITH THE SECTIONS CONNECTED THERETO TO PERMIT THE SUSPENSION SECTION, ARM AND HEAD SECTION TO ASSUME COMMON ALIGNMENT ALONG AN AXIS EXTENDING IN THE SAME DIRECTION AS THE LONGITUDINAL AXIS OF SAID SUSPENSION SECTION, TELEVISION CAMERA MEANS MOUNTED ON THE HEAD SECTION FOR PIVOTAL MOVEMENT ABOUT AN AXIS TRANSVERSE TO THE LONGITUDINAL AXIS OF THE HEAD SECTION, MEANS FOR OPERATING SAID ARM, HEAD SECTION AND CAMERA MEANS SO THAT IN ONE OPERABLE POSITION SAID SUSPENSION SECTION, ARM, HEAD SECTION AND CAMERA MEANS ARE IN COMMON ALIGNMENT AND IN OTHER OPERABLE POSITIONS ARE OUT OF COMMON ALIGNMENT, AND ACTUATOR MEANS OPERATING SAID MEANS AND CONNECTED WITH THE OTHER END PORTION OF THE SUSPENSION SECTION FOR CAUSING SAID PIVOTAL MOVEMENT OF THE ARM, OF THE HEAD SECTION, AND OF THE CAMERA MEANS.