The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 21, 1978
Filed:
Sep. 24, 1976
Stirling A Colgate, Los Alamos, NM (US);
Other;
Abstract
A blasting method uses liquid oxygen and a fluid fuel selected from the cryogenic fuels (liquefied methane, ethane and propane), acetylene and carbonaceous materials (such as fuel oil and powdered coal). A shock force is imposed on the blasting agent to initiate detonation or fluid-fluid explosive self-mixing or both detonation and explosive self-mixing of the fuel and LOX (depending on the fuel). The LOX and the cryogenic fuels (when used) are conducted from safely remote sources through cryogenic fill lines into cryogenic containers in the blast holes, which keep the cryogenic fluids out of thermal contact with the ambient temperature materials in and around the blast hole. The containers and at least the parts of the fill lines near enough to the hole to be damaged or destroyed by the blast are made from closed cell plastic foam, a readily available, cheap, disposable material.