Patent
   D293928
Priority
Mar 27 1984
Filed
Sep 27 1984
Issued
Jan 26 1988
Expiry
Jan 26 2002
Assg.orig
Entity
unknown
1
3
n/a
The ornamental design for a signal transmission device for blasting assembly, as shown and described.

FIG. 1 is a side view of a signal transmission device for blasting assembly showing a first embodiment of my new design, such device being circularly symmetrical (except for the showing of the side loop extending downwardly), the opposite side, top and bottom views being identical to FIG. 1 except for the showing of the downwardly extending side loop;

FIG. 2 is a front side perspective view thereof;

FIG. 3 is a rear side perspective view thereof;

FIG. 4 is an exploded side view thereof with the end cap and with the Nonel tube removed therefrom;

FIG. 5 is a side view of a second embodiment which is the same as the first embodiment, but without the downwardly extending side loop, the article being circularly symmetrical about the longitudinal axis thereof so that the opposite side, top and bottom views are identical with that shown in FIG. 5;

FIG. 6 is a front end perspective view thereof;

FIG. 7 is a rear end perspective view thereof.

Lofgren, Lars-Gunnar

Patent Priority Assignee Title
D297347, Jan 17 1985 Nitro Nobel AB Ignition apparatus for blasting machine
Patent Priority Assignee Title
4426933, Apr 27 1981 ETI EXPLOSIVES TECHNOLOGIES INTE Non-electric blasting assembly
4481884, Dec 28 1981 ETI CANADA INC Field-connected explosive booster for initiating low-energy explosive connecting cords
4539909, Sep 28 1982 C-I-L Inc. Detonating assembly with U-bend of low energy detonating cord
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Sep 27 1984Nitro Nobel AB(assignment on the face of the patent)
Oct 25 1984LOFGREN, LARS-GUNNARNITRO NOBEL AB, A CORP OF SWEDENASSIGNMENT OF ASSIGNORS INTEREST 0043660152 pdf
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