A.w. Chesterton Company

Other

Robert James Powers

Henri V Azibert

Michael P Grimanis

Philip Michael Mahoney, Jr

Gordon E Kamstra

Joseph Usenia

Alan Van Epps

Henri Vincent Azibert

An active flush regulation system having a rotary component, a stationary component, one or more biasing elements for applying a biasing force to the stationary component in a first direction for biasing together a rotor sealing surface and a stator sealing surface, and a holder component for holding one or more of the stationary component and the rotary component. The rotor sealing surface and the stator sealing surface form an under-balanced seal face, where in a first closed position the rotor sealing surface and the stationary sealing surface contact each other, and when flushing fluid is introduced to the seal face, the flushing fluid acts to place the rotor sealing surface and the stator sealing surface in an open position where the rotor sealing surface and the stator sealing surface are separated from each other to form a gap to allow the flushing fluid to pass therealong.

Active flush regulation system for use with a mechanical seal or a packing assembly

A system for regulating an axial biasing force applied to a stacked set of packing elements mounted within stationary equipment, comprising a packing loading assembly for sealing a process fluid within the stationary equipment and for applying the axial biasing force to the packing elements via a pressurized fluid from a pressure regulator. The packing loading assembly includes a gland element for mounting to the stationary equipment by a plurality of gland bolts, and an external actuation subsystem for coupling to at least one of the plurality of gland bolts for applying an axial actuation force directly to the gland element in response to the pressurized fluid. The gland element in response to the axial actuation force applies the axial biasing force to the packing elements.

System and method for automatically energizing packing material with a packing loading assembly

A mechanical seal assembly includes a gland assembly having a chamber formed in an inner surface for seating a fluid insert element. The fluid insert element promotes movement of particles present in a slurry process fluid away from a seal interface formed by the sealing surfaces of rotary and stationary seal rings.

System and method for optimizing a fluid environment in split mechanical seals

A mechanical seal that employs a lock ring assembly having associated therewith a locking mechanism. The locking mechanism can include a nut element, such as a barrel nut, that allows an associated bolt element to adjust a tightening load and position while clamping occurs of the components of the mechanical seal. This adjustment flexibility removes or reduces unwanted bending stresses in the bolt element, thus allowing for more torque to translate directly to the lock ring. The barrel nut allows for more material to remain in the lock ring, thus providing for additional overall strength relative to a traditional locking element. The lock ring also includes a plurality of flex regions in the form of notches that allow the lock ring to flex when the main body is tightened about the shaft.

Single point actuation low-profile lock ring for a mechanical seal

A mechanical seal that employs an axially movable spring holder plate that engages a sealing element, such as an O-ring, associated with a stationary seal ring. In turn, the stationary seal ring can have a sealing face that engages with a sealing face of a rotary seal ring. The rotary seal ring can also have a sealing element, such as an O-ring, associated therewith. The O-rings are initially disposed in an unloaded position where they are not radially compressed and hence the ends do not expand circumferentially past the end faces of the holder or gland segments. The spring holder plate can be moved axially by tightening selected bolts associated therewith. When moved axially, the spring holder plate moves the stationary seal ring and the O-ring associated therewith in an axially inboard direction, thus placing the O-rings in a loaded position, where the O-rings are radially compressed.

Externally energized secondary seals in split mechanical seals

A fireplace heat exchange system is disclosed which is connectable to an existing forced air heating system of a building. The heat exchange unit includes a housing or enclosure within which is disposed a firebox. The enclosure and the firebox define a heat exchange space. The firebox includes a front opening which is closed by doors. A plenum is positioned on top of the firebox for collecting combustion gases. A plurality of heat exchange fins are secured to the exterior of the firebox within the heat exchange space to channel the incoming air entering the housing around and over the firebox and to increase the efficiency and rate of heat exchange. An air control device is positioned adjacent the front of the firebox to control the amount of combustion air entering the firebox. A chimney connects to the plenum and a chimney damper limits the combustion gas flowing out the chimney.

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Salem, MA, United States of America

Robert James Powers