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:
Oct. 26, 1976
Filed:
Feb. 10, 1975
Richard William Spraggs, Simsbury, CT (US);
Ernest Laird Gladden, Granby, CT (US);
The Ensign-Bickford Company, Simsbury, CT (US);
Abstract
A millisecond delay surface connector suited for explosive blasting operations is provided in the form of a flexible detonation transmitter tube having a length of about one half foot and more with a delay cap connected to each end of the tube. The tube provides a hollow elongated gas channel having the inside periphery of said tube coated with a layer of explosive for sustaining a percussion wave at high velocity along the length of the tube. Each cap includes an elongated tubular shell of rigid material having a closed terminal end portion, a layer of explosively inert material within the shell at the terminal end portion, a delay element within the shell and a detonating charge intermediate to said delay element and said explosively inert layer. The delay element is in propagative relationship with the tube and the detonating charge. A protective block housing each cap has several elongated cavities in side-by-side communicating relationship with the cap being retentively received in one of the cavities and the other cavities being suited to receive a detonating fuse in side-by-side relationship with the cap.