Albert J Mclaughlin

US Patent:

44712260, Sep 11, 1984

Filed:

Feb 16, 1982

Appl. No.:

6/348790

Inventors:

Jerome D. Wisnosky - Lancaster PA
Albert J. McLaughlin - Lancaster PA
Daniel P. McGinn - Lancaster PA

Assignee:

Armstrong World Industries, Inc. - Lancaster PA

International Classification:

G21K 102
H01J 502

US Classification:

250504H

Abstract:

An improved safety housing for a radiation source used in polymerization of materials. The housing includes an interlock feature which prevents activation of the source unless the shield is placed upon the work piece. A spring loaded switch on the surface which abuts the work piece and a second magnetic switch are used to prevent accidental activation. The unit uses a mechanically interlocking locator plate which is aligned in advance of the insertion of the housing into it, and shields the operator from any stray radiation when in use.

US Patent:

43465994, Aug 31, 1982

Filed:

Sep 8, 1980

Appl. No.:

6/184786

Inventors:

Albert J. McLaughlin - Lancaster PA
Gary W. Paddison - Dover PA

Assignee:

Armstrong World Industries - Lancaster PA

International Classification:

G01N 2900

US Classification:

73597

Abstract:

Apparatus for ultrasonically testing polymer materials includes means for measuring the thickness of the specimen and for measuring the mass density of the specimen in situ. Ultrasonic measurements of the specimen are obtained. Then the specimen holder is rotated past the critical angle and new ultrasonic measurements are obtained. From these ultrasonic measurements the storage and loss moduli and attenuation coefficients for the polymer specimen are obtained.