Paul E Dewitt

US Patent:

50731360, Dec 17, 1991

Filed:

Mar 29, 1990

Appl. No.:

7/501051

Inventors:

Paul H. DeWitt - Fort Wayne IN
James J. Majewski - Fort Wayne IN
Thomas A. Richter - Fort Wayne IN

Assignee:

Magnavox Government and Industrial Electronics Company - Fort Wayne IN

International Classification:

B63B 2208

US Classification:

441 7

Abstract:

A surface unit for a sonobuoy or similar device is disclosed and includes a variable volume sealed chamber and an arrangement including a pressurized carbon dioxide cartridge within the sealed chamber which, when energized, releases the carbon dioxide and increases the chamber volume from a collapsed volume to an expanded significantly greater volume. Electronic circuitry including radio transmitter circuitry is included within the sealed chamber along with a radio transmitter antenna which is within the sealed chamber and coupled to the radio transmitter circuitry. Expansion of the float sealed chamber functions to erect the antenna preparatory to transmission. The variable volume sealed chamber is formed of a semi-rigid plastic cup having a generally cylindrical corrugated sidewall portion, a closed end describing one of the chamber ends and a rigid base member sealed to the cup sidewall portion remote from the closed end and describing the other of the chamber ends. As it expands, cylinder length is directly proportional to cylinder volume.

US Patent:

52172619, Jun 8, 1993

Filed:

Apr 23, 1990

Appl. No.:

7/513383

Inventors:

Paul R. DeWitt - Van Wert OH
Steven C. Flickinger - Convoy OH
Dennis J. Stuerzenberger - Monroeville IN

Assignee:

Aeroquip Corporation - Jackson MI

International Classification:

F16L 3500

US Classification:

2853322

Abstract:

A tube connector for sealing a flareless tube to a fitting having a flat sealing face perpendicular to the fitting axis. The tube connector incorporates a ferrule engaged by a sleeve mounted on the end of the tube and having a flat radial surface for engaging the fitting sealing face. The ferrule is deformable and establishes a primary wedge type metal-to-metal sealing engagement with the tube by a compression nut threaded upon the fitting. The ferrule radially bows under axial and radial compression and this deformation suppresses vibration while the shape of the ferrule end engaged by the nut increases the radial forces on the ferrule as the nut is tightened to provide firm tube support remote from the seal region. The sleeve is provided with an internal undercut adapted to outwardly flare the end of the tube to lock the tube to the sleeve, and radially support the tube end as the tube is compressed during connection.