초록 ▼

An improved pneumatically telescoping mast supported for pivotal movement in opposite directions is provided. The mast includes adjacent telescoping sections slidable relative to one another between retracted and extended positions. A pneumatic control system for displacing the mast sections between

An improved pneumatically telescoping mast supported for pivotal movement in opposite directions is provided. The mast includes adjacent telescoping sections slidable relative to one another between retracted and extended positions. A pneumatic control system for displacing the mast sections between retracted and extended positions is also provided as is a system for pivoting the mast in opposite directions about the pivot axis between the horizontal and vertical positions. The mast includes a light source mounted at the other upper end of the mast which is capable of running on the same DC power source as the pneumatic control system and the mast pivoting system.

대표청구항 ▼

[ Having thus described the invention, it is claimed:] [1.] In a pneumatically telescoping mast supported for pivotal movement in opposite directions about a horizontal mast axis, said mast including adjacent telescoping sections slidable relative to one another between retracted and extended positi

[ Having thus described the invention, it is claimed:] [1.] In a pneumatically telescoping mast supported for pivotal movement in opposite directions about a horizontal mast axis, said mast including adjacent telescoping sections slidable relative to one another between retracted and extended positions, means including pneumatic control means for displacing said mast sections between said retracted and extended positions, and means for pivoting said mast in opposite directions about said pivot axis between horizontal and vertical positions, the improvement comprising: said mast including lighting means for illumination mounted to one of said adjacent telescoping sections and DC power supply means for providing electrical power to said mast system, for providing power to said lighting means and said means for pivoting and including means adjacent said lighting means for converting DC power to AC power whereby AC power is provided to said lighting means.