BERNARD B BECKER
Engineering in Belmont, MA

4299248, Nov 10, 1981

Mar 13, 1979

6/020087

Bernard B. Becker - Belmont MA
John K. Bowman - Brighton MA
Joseph A. Lane - Taunton MA

Amtrol Inc. - West Warwick RI

F16K 3134

137202

An air vent device for automatically venting entrapped air from hot water heating and chilled water cooling systems. The device can vent a large volume of air in a relatively short time by using a large vent opening, controlled by a pilot valve operated diaphragm venting valve. The pilot valve, actuated by a spring and connected to a float, permits air pressure within the device to pass to the rear of the diaphragm valve to maintain it in a closed position during normal operation of the system. When the float drops to a predetermined position the float weight overcomes the spring force and the pilot valve vents the rear side of the diaphragm valve to atmosphere, allowing it to open, thereby venting the air collected in the device to atmosphere.

4420010, Dec 13, 1983

Mar 7, 1980

6/128240

Bernard B. Becker - Belmont MA
John K. Bowman - Brighton MA
Cyril A. Randall - Belmont MA

Amtrol Inc. - West Warwick RI

E03B 707

137116

A device for preventing the back flow of water from a point of use into a water supply line. The device includes a unitary casing having an inlet, a central chamber, an outlet, a removal port and a drain vent opening. The inlet, the central chamber and the outlet are coaxially aligned. A relief valve is located in the central chamber and offset from the coaxial alignment of the inlet, the central chamber and the outlet. There is a cover for the removal port. There is also a pair of check valves. One is mounted between the inlet and the central chamber and the other is mounted between the outlet and the central chamber. The device allows water to pass unobstructed in a straight-through flow path through the device. The back flow of water is prevented.

4284097, Aug 18, 1981

Jul 18, 1979

6/058566

Bernard B. Becker - Belmont MA
John K. Bowman - Brighton MA
Cyril A. Randall - Belmont MA

Amtrol Inc. - West Warwick RI

F16K 1506, F16K 4500

137218

A back flow preventing device is disclosed which prevents the reverse flow of water from a point of use into a water supply system. The device has a casing with coaxially aligned inlet and outlet openings, and containing coaxially aligned inlet and outlet check valves. The coaxial alignment of the inlet and outlet openings, and of the inlet and outlet check valves serves to minimize the pressure drop through the device. Between the inlet and outlet check valves is a diaphragm actuated relief valve which opens to drain the passage between the check valves if they should malfunction or if there is a drop in the supply line pressure sufficient to cause actual or potential reverse flow back toward the supply line. The internally-located inlet and outlet check valves are each removably secured in place by internally-located retaining rings.

4232704, Nov 11, 1980

Mar 28, 1978

5/890964

Bernard S. Becker - Belmont MA
John K. Bowman - Brighton MA
Cyril A. Randall - Belmont MA

Amtrol Inc. - West Warwick RI

F16K 1506, F16K 4500

137218

A back flow preventing device which prevents the reverse flow of water from a point of use into a water supply system. The device has a casting with coaxially aligned inlet and outlet openings, and containing coaxially aligned inlet and outlet check valves. The coaxial alignment of the inlet and outlet openings, and of the inlet and outlet check valves serves to minimize the pressure drop through the device. Between the inlet and outlet check valves is a diaphragm actuated relief valve which opens to drain the passage between the check valves if they should malfunction or if there is a drop in the supply line pressure sufficient to cause actual or potential reverse flow back toward the supply line.

4165951, Aug 28, 1979

Jun 30, 1977

5/811717

Yizhak Friedman - Newton MA
Bernard B. Becker - Belmont MA

Amtrol Incorporated - West Warwick RI

F16K 3112, F04B 4902, F04B 4908

417 26

A water pressure booster system is disclosed having a control device which regulates the pressure in the distribution system via a closely balanced piston valve. Flow into the system from a pump is controlled by a throttling valve which is actuated by the pressure differential between the system pressure and a constant pressure acting on a closely balanced piston. Flow from the system back into the pump is prevented by a flow control/check valve within the throttling valve.

4207915, Jun 17, 1980

Sep 6, 1977

5/830463

Bernard B. Becker - Belmont MA
John K. Bowman - Brighton MA
Cyril A. Randall - Belmont MA

Amtrol, Inc. - West Warick RI

E03C 110

137117

A back flow preventer for preventing contamination of a water supply. The preventer includes check valves which are enclosed in a casing comprised of a body and a single removable cover. The check valves are vertically disposed and spaced laterally from each other. The valves may be removed for servicing when the cover is removed without disturbing other parts of the device. Between the check valves is a relief valve which opens to drain the passage between the check valves when there is a drop in the supply line pressure sufficient to cause actual or potential reverse flow back toward the supply line. The check valves open by movement in opposite directions. Each check valve unit includes a tubular strainer through which all water must pass. The check valve units, while identically dimensioned as to the valve structure, include other parts of unequal dimensions which preclude accidental reversal of the units when being initially assembled or replaced after servicing.