초록 ▼

A breakaway reuseable marker lamp suitable for airport runway usage utilizes a base which is threaded into existing electrical junction boxes along the runway and an upright post which is frictionally releaseably retained in a socket of the base for easy breakaway in response to impact by an aircraf

A breakaway reuseable marker lamp suitable for airport runway usage utilizes a base which is threaded into existing electrical junction boxes along the runway and an upright post which is frictionally releaseably retained in a socket of the base for easy breakaway in response to impact by an aircraft or other vehicle and easily manually reinserted. The post includes inner and outer telescoping sections so as to vary the height of the post for changing local requirements. To avoid damage to wiring extending between base and post, the lower end of the post, which fits within the socket, has a beveled rim. Use of the rim helps prevent cutting or stripping of the electrical wiring which bears against the rim during separation of post and base.

대표청구항 ▼

A breakaway, reuseable marker lamp for an airport runway, mountable to a fixed ground engaging electrical junction box containing electrical wiring and located adjacent the runway and dislodgeable relative to the box by aircraft impact with minimal harm to aircraft, marker lamp and electrical wiring

A breakaway, reuseable marker lamp for an airport runway, mountable to a fixed ground engaging electrical junction box containing electrical wiring and located adjacent the runway and dislodgeable relative to the box by aircraft impact with minimal harm to aircraft, marker lamp and electrical wiring comprising: a base rigidly mountable to the electrical junction box for retention by the box, and further including an upright support member extending upwardly relative to the box and having an interior channel communicating with the box for passage of electrical wiring from the box; an upright post member having upper and lower ends and having a hollow interior extending between said upper and lower ends for passage of the electrical wiring from said support member of said base to the upper end of said post; a quickly releaseable coupling device on one of said members to permit the other of said members to be inserted within said coupling device and to be frictionally, removably retained within said coupling device, said device being formed of a breakage resistant, elastically deformable, plastic material which is elastically deformable during impact so as to permit dislodgment of the other of said members from said device and separation of said post member relative to said support member when said post member is struck, the structural integrity of said coupling device and members remaining intact after impact; and a lamp housing fixed to said upper end of said post member and operably connectable to the electrical wiring.