Michael J Bray

US Patent:

20150353324, Dec 10, 2015

Filed:

Jun 10, 2014

Appl. No.:

14/300714

Inventors:

- Atlanta GA, US
Michael Bray - Sandy Springs GA, US

International Classification:

B66B 9/04

Abstract:

A hydraulic elevator system is operable to selectively raise and lower an elevator car. The system raises and lowers the elevator car by actuating a hydraulic jack. The system retracts a hydraulic jack that is fixed to an upper portion of the hoistway by pressurizing hydraulic fluid within the hydraulic jack via a hydraulic fluid pump. When retracting the hydraulic jack the elevator car travels upward. An accumulator usable with the system is operable to store energy during the downward travel of the elevator car for later use during the upward travel of the elevator car.

US Patent:

20150307321, Oct 29, 2015

Filed:

Apr 24, 2015

Appl. No.:

14/695280

Inventors:

- Essen, DE
Michael Bray - Sandy Springs GA, US
Thomas Felis - Atlanta GA, US

International Classification:

B66B 7/06

Abstract:

A hoisting member for an elevator system includes a core having strength components embedded in a matrix material. A coating can surround the core to protect the core and control the coefficient of friction of the outer surface based on a range of desired friction properties to prevent or inhibit slippage of the hoisting member when used in a traction elevator system. The strength components may be made from carbon nanotube material with the matrix material made from a polymer material. The hoisting member may also include other conductive material or fiber optic material. The hoisting member may also serve as the trailing cable in an elevator system. In doing so the hosting member transmits power and data between the elevator car and the elevator controller thereby eliminating the need for a traditional trailing cable.