Abstract: A modular helmet system having a helmet base to protect from impacts the crown of a wearer's head and terminating basally in a rear rim and side rims; a C-shaped extension detachably connected to said rims to protect from impacts, when fitted to the helmet base, the base of a wearer's skull; and a crown comb detachably connected centrally over the crown of the helmet base. The helmet base is provided with ventilation windows centrally located over its crown. The comb covers and seals said ventilation windows. The comb is also employed to secure the extension in place, when fitted on the helmet base.

Abstract: Methods, apparatus, and software for accessing location based Internet services by automatically populating DNS tables with subscriber location information. The DNS tables are updated responsive to information provided on subscriber call set-up. The location may be derived directly for the content of the call set-up, or may be derived in conjunction with one or more pre-existing databases. Ideally the DNS entry is a mapping from IP address (or subnet address) to location, though a mapping from domain name to location will also be effective. When a location based service is requested by a subscriber, the requested service may interrogate the DNS table to retrieve the requesting user's location without requiring further subscriber intervention.

Abstract: A chisel (10) comprises a handle (14), shank (12) and working bit (16). A key (80) slides longitudinally in a dovetail slot (30) and is driven by an actuator sleeve (70) which serves to draw the key (80) up the slot (30). The key (80) has a key-head (82) which engages the blade bit (16) and draws it onto a seat formed a the end of the shank (12). On the other hand, a chisel (10′) comprises a handle (14), a shank (120), and a tool bit (160), wherein the shank is a plastics moulding and the tool bit is moulded on the end of the shank. The shank and handle between them have a selectively disengageable plug (124) and socket (402).

Abstract: Methods, apparatus, and software for accessing location based Internet services by automatically populating DNS tables with subscriber location information. The DNS tables are updated responsive to information provided on subscriber call set-up. The location may be derived directly for the content of the call set-up, or may be derived in conjunction with one or more pre-existing databases. Ideally the DNS entry is a mapping from IP address (or subnet address) to location, though a mapping from domain name to location will also be effective. When a location based service is requested by a subscriber, the requested service may interrogate the DNS table to retrieve the requesting user's location without requiring further subscriber intervention.