Paul D Cardi

US Patent:

42034671, May 20, 1980

Filed:

Aug 4, 1978

Appl. No.:

5/931202

Inventors:

Paul Cardi - Cranston RI

International Classification:

E03B 707

US Classification:

137557

Abstract:

A pressure equalizing valve featuring a housing defining a chamber, the housing having first and second passages therethrough opening into the chamber; a valve seat in the chamber surrounding the opening of the second passage thereinto; a diaphragm having its periphery sealed to the housing and forming a wall of the chamber adjacent to the valve seat; resilient means on the side of the diaphragm opposite the valve seat for urging the diaphragm against the seat with a predetermined force, to seal the second passage from the chamber, and hence from the first passage; and an indicator mounted on the housing and having a pressure responsive portion in communication with the chamber for indicating when the air pressure therein is below a predetermined value just sufficient to overcome the predetermined force and unseal the second passage.

US Patent:

20190061889, Feb 28, 2019

Filed:

Aug 28, 2018

Appl. No.:

16/115419

Inventors:

Paul D. Cardi - Sarasota FL, US
Nancy Gail Cardi - Sarasota FL, US

International Classification:

B63C 9/15

Abstract:

An inflatable personal flotation device worn about the waist level as a belt or as incorporated into a swimming garment is disclosed, that is inconspicuous and may be worn over, under or even be incorporated into almost any type of apparel. This waist belt PFD in its uninflated state is practical, comfortable, attractive and inconspicuous. The PFD contains an outer compartment housing a buoyancy component, activated by pressurized gas or other means, and has one or more straps to secure the device to the wearer. Upon inflation the apparatus, being deployed and powered by its own buoyancy, rises above the waterline into a rescue configuration turning and positions a wearer upright with their head above water.