US2713669A - Plug connector - Google Patents

Description

H. CAHN PLUG CONNECTOR July 19, 1955 Filed March 16, 1953 United States Patent 0 2,713,669 PLUG C(PNNECTOR Herbert Calm, Asbnry Park, N. J. Application March 16, 1953, Serial No. 42,760 1 Claim. (Cl. 339-105) (Granted under Title 35, U. S. Code (1952), see. 266) The invention described herein may be manufactured and used by or for the Government for governmental purposes, without the payment of any royalty thereon.

This invention relates to new and useful terminal plugs for flexible electric power cords, and has for its etc. to electric power receptacles.

The invention aims to provide a terminal which encloses and insulates the conducting wires of the cord cord and withdrawal of the plug from cooperating electric power receptacles more reliably and more simply than devices heretofore known.

Furthermore, the invention lends itself to more rugged and durable construction in a smaller and manipulated form than devices heretofore These and other objects of the invention will be more apparent from the following description and claim.

The invention will be more fully understood from the drawings in which Figures I through VIII show sequential stages of assembly of the terminal plug to a flexible electric power cord,

arrangement of parts in when attached to a power cord.

' A body 1, of electrical insulating material such as phenolic p1ast1c, is of suitable ,material flows during molding to set and permanently lock the blades in These blades 2 are and 4 of channel 4. of channel 4 terminate 9 and their retaining screws 7 but excluding the blades 2. A hole 10 in cover 8 is of proper diameter to allow free passage of cord 5. Hole 10 in cover 8 is so located that when cover 8 is assembled onto body 1, hole 10 is sufiiciently misaligned axially from hole 4 in body 1 as to clamp power cord 5 securely in place, as is shown in Figure IX. A second hole 11 in cover 8 provides proper clearance for a machine screw 12. This screw 12 mates .With a cooperating tapped metal fitting 13 manently into body 1 and located so as to alignment with hole 11 in cover 8. Proper tightening of screw 12 into tapped fitting 13 squeezes and retains cord 5 between cover 8 and body 1, in addition to holding cover 8 in its proper place on body 1.

' provides both electrical insulation and physical protection for parts of the plug which it encloses.

In the form illustrated it will be seen that the invention will function as a safe, convenient, reliable and insuch as the ordinary convenience outlet receptacles found in homes, shops, factories, etc.

Such terminations parts for manufacture, provide economy in assembling probability of shorting of the stripped wire ends of the cord.

Such terminations provide all these functions and features in a small and easily manipulated form which is capable of being easily assembled and disassembled a.

great number of times age.

While many variations in size or in arrangement and details may be made, without departing from the spirit of this invention, what is claimed to secure by Letters Patent is:

An electric insulating body having a generally rectangular parallelpiped form, one face of said body having a centrally without appreciable wear or dambranches into diverging channels surfaces of the body, said opposite surfaces intersecting said entrance hole surface, adjacent to said terminating openings two machine screws respectively fitted into two parallel conductive metal blades molded into said and 0 end having two circular holes, the first to provide clearance for said power cord and the second to provide clearance for said cover attachment screw, said power cord clearance hole being sufficiently misaligned from said entrance hole in said body to clamp against said power cord threaded through both said power cord clearance and entrance holes with said cover drawn up securely over and against said body by full engagement of said cover attachment screw.

References Cited in the file of this patent UNlTED STATES PATENTS

Images