Supports: cabinet structure – Mounted on wall – ceiling or spaced panels – Movably mounted housing or compartment
Patent
1976-05-20
1977-12-27
Gilliam, Paul R.
Supports: cabinet structure
Mounted on wall, ceiling or spaced panels
Movably mounted housing or compartment
312306, 312312, 108147, A47B 5100
Patent
active
040651940
ABSTRACT:
A mechanism for automatically elevating or lowering a pulpit or lectern. A pulpit or lectern (hereinafter collectively "pulpit") is secured to the top of a rectangular box-like carriage. The carriage is guided during vertical movement along a plurality of guide rails by a plurality of pillow blocks secured to the carriage and engaging the rails. The rails are located within a pit which holds the pulpit and carriage when fully lowered. A vertical drive screw aligned with the center of the carriage and parallel with the guide rails engages a drive nut secured to the carriage. A reversible electric motor is adapted to drive the drive screw which moves the carriage between positions. The guide rails are adapted to guide the carriage and pulpit between a "down" position within the pit and an "elevated" position above the pit for use. Appropriate switches are provided to permit efficient operation of the system.
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patent: 3028210 (1962-04-01), Byars
patent: 3932009 (1976-01-01), Zollinger
Gilliam Paul R.
Sakran Victor N.
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