Michael A Baird

US Patent:

55747825, Nov 12, 1996

Filed:

Apr 14, 1995

Appl. No.:

8/422281

Inventors:

Michael H. Baird - Pickerington OH
Dennis W. Jackson - Reynoldsburg OH

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

H04M 342

US Classification:

379220

Abstract:

A service control point (SCP) node operates under the control of computer program instructions which interpret message instructions generated by a service administrator. The message instructions provide a hierarchical command structure which permits the SCP node to generate network messages having formats not previously defined as well as changing user specified data. Such network messages are transmitted by the SCP node to identified switches in a telecommunication network in order to determine how a call request, such as an incoming "800" call, will be handled and/or routed by the telecommunication network.

US Patent:

52131289, May 25, 1993

Filed:

May 8, 1992

Appl. No.:

7/880516

Inventors:

Michael R. Baird - Delaware OH

International Classification:

F16K 1714
F16K 1740

US Classification:

137 73

Abstract:

A pressure relief valve, which can be pressure activated or thermally activated, includes a valve housing with an inlet communicating with an interior of a pressure vessel, and a passage from the inlet, through the housing, to an outlet for communicating with the exterior of the housing. A seal plug has a passageway which communicates between an inlet side of the passage and an outlet side of the passage. The seal plug is disposed within a cavity of the housing and across the passage. The seal plug retains a frangible disk against a radial shoulder of the passage for sealing the passage. Excessive pressures within the pressure vessel cause the frangible disk to rupture, thereby exposing a flow path between the inlet and the outlet through which the gas can escape. A thermal trigger engages the seal plug within the cavity to restrict movement of the seal plug and maintain a seal of the passage when a temperature adjacent to the housing is below a predetermined temperature threshold. The thermal trigger releases the seal plug, which is movable within the cavity, allowing the seal plug to relocate within the cavity when the temperature reaches the predetermined temperature threshold, thereby exposing a flow path between the inlet and outlet through which gas can escape.