skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Method of testing for leaks in low density articles

Patent ·
OSTI ID:4388496

Plastic foam carburetor floats are inspected for leaks by subjecting the floats to a radiopaque solution (e.g.. zinc chloride), under pressure to impregnate those floats having leaks, then irradiating each float with gamma rays from an americium 241 source and detecting the intensity of the transmitted radiation by a scintillation detector or Geiger counter. Those floats having leaks transmit a detectably smaller amount of radiation than good floats. (3 Claims, 2 Drawing Figures) (Official Gazette)

Research Organization:
Originating Research Org. not identified
NSA Number:
NSA-29-007828
Assignee:
to General Motors Corp.
Patent Number(s):
US 3764811
OSTI ID:
4388496
Resource Relation:
Patent File Date: 1972 May 01; Other Information: G01n23/00. Orig. Receipt Date: 30-JUN-74
Country of Publication:
United States
Language:
English