Safety helmet and headband therefor

Claim 1

SAFETY HELMET COMPRISING AN INVERTED, RIGID, BOWLSHAPED SHELL; A CONTINUOUS, GENERALLY HORIZONTALLY ARRANGED, UPPER SHOULDER FORMED ON THE INTERIOR WALL OF THE SHELL AT A DISTANCE FROM THE LOWER EDGE OF SAID SHELL; A CONTINUOUS, GENERALLY HORIZONTALLY ARRANGED, LOWER SHOULDER FORMED ON THE INTERIOR WALL OF THE SHELL AT A DISTANCE BENEATH SAID UPPER SHOULDER; A HEADBAND FORMED OF A THICK RESILIENT SOFT PLAIN STRIP BENT INTO A SPLIT RING AND STUFFED INTO THE SPACE BETWEEN SAID SHOULDERS, AGAINST SAID SHELL WALL, WITH THE HEADBAND BEING IN CONTACT WITH AND COMPRESSED BETWEEN SAID SHOULDERS, THE HEADBAND BEING OTHERWISE FREE OF CONNECTION TO SAID HELMET AND THUS BEING MANUALLY REMOVABLE FROM THE HELMET FOR REPLACEMENT BY A SIMILAR HEADBAND OF A DIFFERENT THICKNESS FOR CHANGING THE SIZE OF THE HELMET; THE HEADBAND BEING ADAPTED TO CLOSELY ENCIRCLE AND RESILIENTLY GRASP THE HEAD OF A WEARER OF THE HELMET.