Patent US3572085A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3572085A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of detecting leaks in fluid-containing equipment

Assignee: Individual
•
Filing: 1968-12-18
•
Granted: 1971-03-23
•
Expires: 1988-12-18
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract The invention relates to a method of detecting leaks in closed systems, for example pipelines, vessels, containers and other equipment adapted to contain fluids in static or flowing condition. According to the present invention certain agents with provide heat reactions, referred to as heat indicants, are used. A suitable amount of a heat-indicant compound is supplied to the interior of such equipment. In event a leak exists or develops i such equipment the heat-indicant upon escape into the atmosphere will react with oxygen and/or moisture and generate heat. The heat thus generated can be detected by suitable sensitive infrared detector equipment thereby giving an indication that a leak exists. Examples of heat-indicant agents which are suitable for detecting leaks in closed systems are metal alkyls, metal alkyl halides, metal hydrides, metal alkyl hydrides, diphosphines, alkyl phospines halide, alkyl phosphines. When such agents escape into the air they react with the oxygen and/or moisture and generate heat which can be detected by suitable infrared detector equipment.

Inventors

  • 👤 Joseph J Packo

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 06:06
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/38; G01M3/002; G01M3/02; G01M3/04; G01M3/12; G01M3/20; Y; Y10; Y10S; Y10S252/00; Y10S252/964

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-03-22 1974-09-21 1975-03-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-03-22 1978-09-21 1979-03-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-03-22 1982-09-21 1983-03-23 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag