Mark Jordan Mccarthy

US Patent:

54962625, Mar 5, 1996

Filed:

Jul 25, 1995

Appl. No.:

8/505520

Inventors:

Glenn W. Johnson - Summit NJ
Henry J. McVicker - Chatham NJ
Mark J. McCarthy - Warren NJ

Assignee:

Aircast, Inc. - Summit NJ

International Classification:

A61H 900

US Classification:

601152

Abstract:

A system for intermittent, sequential, graduated compression of a multicompartment inflatable cuff by means of a single pulsing air pump and a single air tube connecting the pump to the cuff. Each more proximal compartment is inflated through a fluid restrictor communicating with its adjacent more distal compartment. The maximum pressure in the most proximal compartment is limited by a fluid restrictor bleeding air to atmosphere and the pressure in the most proximal compartment is always less than the pressure in the adjacent more distal compartment. The maximum pressure in the most distal compartment is controlled by a pressure relief valve. In a second embodiment, deflation is through a restrictor located in the supply line to the cuff and deflation of each more proximal compartment is through a one-way check-valve that permits flow of air from a proximal compartment to a distal compartment but not in the reverse direction.

US Patent:

20210339984, Nov 4, 2021

Filed:

Apr 28, 2021

Appl. No.:

17/302245

Inventors:

- Duesseldorf, DE
Mark McCarthy - Marietta GA, US

Assignee:

TK Elevator Innovation and Operations GmbH - Duesseldorf

International Classification:

B66B 7/12

Abstract:

A method may be used to monitor the health of a belt in an elevator system. The belt may include first and second terminal ends, a plurality of conductive load carrier strands that extend between the first and second terminal ends, and a polymer material surrounding the strands. A measuring connection point may be located between a pair of adjacent carrier strands at each terminal end of the belt. The method may involve electrically connecting a measuring apparatus between the pair of strands at the measuring connection point at each terminal end and measuring an electrical characteristic at each connection point between at least one pair of strands. The electrical characteristic measured over the complete width of the belt gives a complete overview of the health of the belt, as a change in the measured electrical characteristic over time will be indicative of damage within one or more strands.