Composite clamping shell for electric cigar lighters

Details Composite clamping shell for electric cigar lighters Composite clamping shell for electric cigar lighters

F - Mech Eng,Light,Heat,Weapons

23

Q

67/13

F23Q 3/00 (2006.01) F23Q 7/00 (2006.01)

Patent

CA 1214338

COMPOSITE CLAMPING SHELL FOR ELECTRIC CIGAR LIGHTERS Abstract A composite clamping shell for securing the socket of an electric cigar lighter to a panel of an automobile, has a rolled sheet-metal body of tubular shape, with open ends and a clinched seam. Attached to the body is a drawn, sheet metal sleeve having a rolled screw thread. The body has inwardly displaced stop shoulders to posi- tion the sleeve, which latter has an annular out-turned flange abutting the stop shoulders. Edge portions of the body end are laid over the out-turned flange of the sleeve to hold it captive and prevent relative movement. The body is stamped out of a piece of flat sheet metal stock and thereafter rolled into the desired cylindrical shape. The sleeve is produced by drawing operations, from flat stock. The advantage of the present construc- tion over the devices of the prior art is that reduced manufacturing cost is realizeable, since the parts can be constituted of pre-plated stock, thereby eliminating subsequent finishing operations that would normally other- wise be required.

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