Abstract: A telescoping mast assembly having a ball drive actuator drive system. A telescoping mast section is housed within a base mast section mounted to a base plate. The base mast section pivots about a pivot axis between a lowered, horizontal position and an upright, vertical position and includes an upper elongate body disposed an upper side of the pivot axis and a bottom end disposed on an opposite side of the pivot axis. A ball actuator drive includes an electrically powered motor that drives a ball screw reciprocally inward and outward along a linear stroke path. A remote end of the ball screw is attached to the bottom end of the base mast section and, by pushing and pulling the bottom end of the base mast section, pivots and maintains the base mast section to alternative positions between the fully raised and the fully lowered positions. A telescoping mast section is housed within the base mast section and telescopes between an extended position and a retracted position.

Abstract: A telescoping mast assembly having a plurality of interconnected mast sections nested within each other is provided. Mast sections move along an axis between retracted and extended positions. A single drive member having a circular shape within the mast sections and connected to one of the mast sections for displacing the sections in opposite directions along the axis is also provided. A contour forming mold for shaping the drive member is provided between the storage reel and the mast sections.

Abstract: A pneumatically telescoping mast adapted for mounting an electrical fixture is disclosed. The telescoping mast includes a pneumatic control system to extend the mast from a retracted position to an extended position. The mast is made up of adjacent telescopic sections, each section slidable relative to an adjacent section, each section slidable between the retracted position and the extended position. Mechanical arrangements are disclosed for pivoting the mast between a generally horizontal and a generally vertical position, including drive mechanisms operable independently of the pneumatic control system and adapted to securely maintain the mast at any desired angle between the horizontal and vertical positions.

Abstract: A telescoping mast assembly includes a plurality of interconnected mast sections nested within each other for movement between a fully retracted height and a fully extended height. A novel, rigid drive assembly, disposed within the interconnected mast sections, telescopes the mast sections to any position between the fully retracted and the fully extended heights. The rigid drive assembly is constructed of two interconnected, flexible chain elements which accurately position the interconnected mast sections.

Abstract: A rigid drive assembly is constructed of two interconnected, flexible chain elements.

Abstract: A telescoping mast assembly includes a plurality of interconnected mast sections nested within each other for movement between a fully retracted height and a fully extended height. A novel, rigid drive assembly, disposed within the interconnected mast sections, telescopes the mast sections to any position between the fully retracted and the fully extended heights. The rigid drive assembly is constructed of two interconnected, flexible chain elements which accurately position the interconnected mast sections.

Abstract: The mast has a housing arranged to be mounted on the roof of a vehicle such as an emergency vehicle at the usual location of a vehicle light bar, whether or not a light bar is associated with the mast housing. A seal unit is located at the lower end of each telescoping mast section engaging the next outer mast section. The seal unit leaves the lower end of all mast sections unobstructed so that a tubular passage is formed from end to end of the mast. A retractable power supply cable is located in the passage of supply power to the electrical appliance mounted on the top of the mast. There are electrical plug connectors at each end of the mast for releasable connection with the electrical fixture at the top and with the vehicle power supply at the bottom of the mast. The mast is mounted on an offset pivot which simplifies the pneumatic-actuating system which tilts and telescopes the mast, and also enables the mast to tilt by gravity from telescoped retracted vertical to stored horizontal position.