Dean R Surprenant

US Patent:

20070290449, Dec 20, 2007

Filed:

Jun 15, 2007

Appl. No.:

11/763684

Inventors:

Dean Surprenant - Mooers NY, US
Patrick J. Noel - Milton VT, US
Jeffrey S. Spooner - Essex VT, US

Assignee:

PLATTCO CORPORATION - Plattsburgh NY

International Classification:

F16J 15/34

US Classification:

277370

Abstract:

An improved mechanical shaft seal to give a tight seal between relatively rotating machine parts and prevent the escape of particulate material into the atmosphere or into the mechanical components of the housing under adverse operating conditions. The seal provides a grease chamber that prevents solid particles from reaching the main seal by migration within the mechanical shaft seal.

US Patent:

20140048733, Feb 20, 2014

Filed:

Apr 26, 2012

Appl. No.:

14/114050

Inventors:

Dean Surprenant - Plattsburgh NY, US
Kevin Guay - Plattsburgh NY, US

Assignee:

PLATTCO CORPORATION - Plattsburgh NY

International Classification:

F16K 1/20
F16K 3/04

US Classification:

251301, 251368, 137 1523

Abstract:

A flap-gate valve having a replaceable wear surface, methods of replacing a wear surface with a replacement wear surface, and methods of retrofitting an existing flap-gate valve with components adapted to work in conjunction with a replaceable wear surface.

US Patent:

20170037977, Feb 9, 2017

Filed:

May 27, 2016

Appl. No.:

15/167252

Inventors:

- Plattsburgh NY, US
Dean Surprenant - Mooers NY, US

International Classification:

F16K 3/12

Abstract:

A dust and abrasive materials gate valve with an angled valve seat and pivotably mounted valve gate allows for a broad seal area around the periphery of the valve seat, which may be closed tightly by a wedging action due to increasing force applied by the valve actuator. The valve seal is thus not formed along a single, linear surface as in traditional gate valves and the force applied by the valve gate to the seat facilitates closing even if there is wear along the sealing surfaces. Due to the relatively large open area around the periphery of the valve gate just before closing or immediately upon opening, the velocity of particles in pressurized systems is reduced and erosion reduced accordingly.