US3763457A - Electrical plug guard - Google Patents

Electrical plug guard Download PDF

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US3763457A
US3763457A US00199638A US3763457DA US3763457A US 3763457 A US3763457 A US 3763457A US 00199638 A US00199638 A US 00199638A US 3763457D A US3763457D A US 3763457DA US 3763457 A US3763457 A US 3763457A
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central body
outer rim
body portion
electrical plug
rim portion
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US00199638A
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W Whippo
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Product Horizons Inc
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Product Horizons Inc
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/44—Means for preventing access to live contacts
    • H01R13/447—Shutter or cover plate
    • H01R13/453—Shutter or cover plate opened by engagement of counterpart
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S439/00—Electrical connectors
    • Y10S439/915—Auxiliary device for existing plug

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  • An electrical plug guard comprising a flat disc, at central body portion, slots therein for receiving and frictionally holding the prongs of an electrical plug, an outer rim to extend radially beyond the periphery of the plug when the disc is placed adjacent thereto by inserting the prongs through the slots in the said central body portion of the disc, resilient electrically nonconductive ribs extending from and around said central body portion joining it resiliently to said outer rim, said resiliently joining ribs permitting longitudinal movement of the outer rim away from the central body portion when pressure is applied against the rim and permitting return of said outer rim back to the plane of the central body portion when such pressure is released, said ribs providing a protective cage around the prongs of the electrical plug when the outer rim is moved longitudinally away from the central body portion frictionally held adjacent to the electrical plug to prevent a persons fingers from accidentally touching the prongs and resulting in
  • This invention relates to an electrical plug guard in the form of a flat disc having an outer rim surrounding a central body portion and joined resiliently by resilient electrically non-conductive ribs extending around and between the outer rim and central body portion, the latter including slots to receive and frictionally hold the prongs of an electrical plug whereby the body portion is held adjacent to the plug when pressure is applied against the outer rim, which extends radially beyond the periphery of the electrical plug, to move the rim away from the plug causing the resliently joining ribs to become extended and form a protective cage around the prongs of the plug.
  • a persons fingers when grasping the plug for insertion into an electrical outlet are thereby protected, since if they slip or accidentally move beyond the edge of the plug they contact the outer rim of the disc pressing it forward causing the ribs to extend and the protective cage to form to prevent contact between the persons fingers and prongs of the electrical plug when they are being inserted into an electrical outlet.
  • the outer rim is brought back into the plane of the central body portion by the resiliency of the ribs whereby the entire device becomes a flat disc with all parts lying heretofore known have required complicated mechanical construction, are expensive to make, relatively quick to fail, and are usually incorporated as a part of the plug itself.
  • the plug guard in accordance with this invention can be purchased separately, made of various sizes and shapes for use with a wide variety of electrical plugs on electrical appliances, extension cords and the like already purchased and in use.
  • An electrical plug guard which comprises a flat disc, an outer rim portion of greater circumference than that of an electrical plug with which it is to be used, a central body portion, slots therein to receive and frictionally hold the prongs of an electrical plug, and resilient electrically non-conducting ribs extending around and between said outer rim portion and said central body portion to join together in resilient relationship, said ribs forming a protective cage around the electrical prongs when said outer rim portion is moved away from said electrical plug towards an electrical outlet in which said plug is being inserted, said ribs and outer rim portion resiliently returning to the plane of the central body portion when pressure on the outer rim portion is released thereby returning to the form of a flat disc.
  • FIG. 1 is a plan view of the electrical plug guard in accordance with this invention.
  • FIG. 2 is an elevation view of this invention showing the plug guard mounted on an electrical plug.
  • FIG. 3 is an elevation view of this invention showing the plug guard mounted on an electrical plug with the outer rim portion of the plug guard moved outwardly from the plug body and illustrating the connecting resilient ribs forming a protective cage around the prongs of the electrical plug.
  • FIG. 4 is a perspective view of this invention taken from the rear of the plug guard showing the outer rim portion moved away from the central body portion and the resilient ribs forming a protective cage.
  • the electrical plug guard in accordance with this invention may consist of a round flat disc generally designated 1, having an outer rim 2, a central body portion 3, and ribs 4 therebetween connecting outer rim 2 with central body portion 3. Slots 5 are formed in central body portion 3 to receive and frictionally hold the prongs 6 of an electrical plug 7. Two slots 5 are illustrated in FIG. 1 for receiving two prongs of an ordinary household electrical plug. It is obvious however that one or more additional slots or holes may be formed in the central body portion 3 to receive one or more additional prongs of an electrical plug, such as a third prong for a ground, so this invention may be used with a wide variety of electrical plugs.
  • the circumference of outer rim 2 is greater than the circumference of the electrical plug 7 on which it is used to enable contact with outer rim 2 by a persons fingers when grasping plug 7 for insertion into an electrical outlet.
  • the ribs 4 are formed by cutting slots 8 in the disc 1 in accordance with the following arrangement.
  • Each rib 4 is bordered by a slot 8 beginning from a midpoint 8a and diverging in one direction to a first end point 8b ending at the inner edge of outer rim 2 and in an opposite direction to a second end point ending at the outer edge of central body portion 3.
  • the slots 8 are arranged circumferentially around the disc 1 so that midpoint 80 to first end point 8b of each slot is substantially parallel to and spaced radially from second end point 80 to midpoint 8a of the next adjacent slot 8.
  • first end point 8b of each slot 8, midpoint 8a of the first adjacent slot 8 in one circumferential direction, and second end point 8c of the second adjacent slot 8 in the same circumferential direction are in radial alignment when outer rim 2 and central body portion 3 are in the same plane, each of said points spaced apart with first end points 8b lying radially farthest from the central axis, said radially aligned midpoints 8a lying radially second farthest from the central axis, and said radially aligned second end points 8c lying closest to the central axis.
  • Each rib 4 is thereby formed between midpoint 8a to first end point 8!; of one slot and inwardly spaced second end point 8c to midpoint 8a of a next adjacent slot in which midpoint 8a of the first slot is radially aligned with second end point 80 of the next adjacent slot and in which first end point 8b of the first slot is radially aligned with midpoint 8a of the next adjacent slot.
  • FIG. 1 illustrates eight slots 8 which in the manner described above have eight series of radially aligned first end points 8b of one slot 8, midpoints 8a of an adjacent second slot 8, and second end points 80 of a third slot 8 which is adjacent to the second slot 8, the series of eight radially aligned points being spaced equidistantly apart around the disc 1.
  • eight ribs 4 are formed in the embodiment of this invention illustrated in FIG. 1.
  • a suitable material for the flat disc body 1 is polypropylene although other materials having similar properties of resiliency and electrical non-conductivity may be used.
  • the electrical plug guard in accordance with this invention is mounted on an electrical plug 7 by inserting prongs 6 through slots 5 until the disc 1 is flush against the inner face of plug 7. Slots 5 are made just large enough to frictionally engage prongs 6 and to frictionally hold central body portion 3 against the inner face of plug 7.
  • a persons fingers will contact outer rim 2 of disc 1 in the event they extend beyond the body of electrical plug 7, thus forcing outer rim 2 away from plug 7 while central body portion 3 of disc 1 is held against plug 7 by the frictional engagement of slots 5 with prongs 6.
  • the disc may be very thin, on the order of onesixteenth inches thick or less.
  • the portions of ribs 4 between first end points 8b, midpoints 8a, and second end points 8c may be slightly notched to lessen the thickness between such points from that of outer rim 2, central body portion 3 and the intermediate portions of ribs 4, thus providing hinge means or hinge lines 9.
  • Such hinge lines 9 may be formed by notching one or both sides of disc 1 between the points as described. The thickness of hinge lines 9 will depend on the material used to make the plug guard. For example, if polypropylene is used, the hinge lines 9 may be on the order of one-thirty secondths of an inch or approximately half the thickness of the remaining portions of the plug guard.
  • An electrical plug guard comprising a flat disc having a central body portion, slots therein for receiving and frictionally holding the prongs of an electrical plug, an outer rim portion of said disc which extends radially beyond the periphery of an electrical plug when mounted thereon, and slotted means to permit longitudinal movement of said outer rim portion with respect to said central body portion, said slotted means simultaneously providing an electrically non-conductive barrier around the prongs of an electrical plug when said outer rim portion is moved longitudinally away from said central body portion and an electrical plug on which it is mounted.
  • slots include a midpoint and diverge in one direction towards a first end point at the inner edge of said outer rim portion and diverge in a different direction towards a second end point at the outer edge of said central body portion, the first end point of each of said slots being radially aligned with the midpoint of the slot next adjacent in a circumferential direction, and with the second end point of the next following slot in the same circumferential direction when said outer rim portion and said central body portion are in the same plane, said arrangement of slots providing ribs integrally joining said outer rim portion to said central body portion.
  • hinge means include notches cut partially of an inch thick, wherein said central body portion, said outer rim portion and said ribs are of the same material, wherein said material is resilient and electrically nonconductive.

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Abstract

An electrical plug guard comprising a flat disc, a central body portion, slots therein for receiving and frictionally holding the prongs of an electrical plug, an outer rim to extend radially beyond the periphery of the plug when the disc is placed adjacent thereto by inserting the prongs through the slots in the said central body portion of the disc, resilient electrically nonconductive ribs extending from and around said central body portion joining it resiliently to said outer rim, said resiliently joining ribs permitting longitudinal movement of the outer rim away from the central body portion when pressure is applied against the rim and permitting return of said outer rim back to the plane of the central body portion when such pressure is released, said ribs providing a protective cage around the prongs of the electrical plug when the outer rim is moved longitudinally away from the central body portion frictionally held adjacent to the electrical plug to prevent a person''s fingers from accidentally touching the prongs and resulting in electrical shock when connecting or disconnecting the plug to an electrical outlet.

Description

United States Patent I 1 Whippo Oct. 2, 11973 ELECTRICAL PLUG GUARD [75] Inventor: Walt Whippo, Cocoa Beach, Fla.
[73] Assignee: Product Horizons, Inc., Chicago, Ill.
[22] Filed: Nov. 17, 1971 [21] Appl. No.: 199,638
Primary Examiner-Marvin A. Champion Assistant Examiner-Terrcll P. Lewis Attorney-Ernest S. Kettelson [57] ABSTRACT An electrical plug guard comprising a flat disc, at central body portion, slots therein for receiving and frictionally holding the prongs of an electrical plug, an outer rim to extend radially beyond the periphery of the plug when the disc is placed adjacent thereto by inserting the prongs through the slots in the said central body portion of the disc, resilient electrically nonconductive ribs extending from and around said central body portion joining it resiliently to said outer rim, said resiliently joining ribs permitting longitudinal movement of the outer rim away from the central body portion when pressure is applied against the rim and permitting return of said outer rim back to the plane of the central body portion when such pressure is released, said ribs providing a protective cage around the prongs of the electrical plug when the outer rim is moved longitudinally away from the central body portion frictionally held adjacent to the electrical plug to prevent a persons fingers from accidentally touching the prongs and resulting in electrical shock when connecting or disconnecting the plug to an electrical outlet.
9 Claims, 4 Drawing Figures Patented Oct; 2, 1973 INVENTOR WALT WHIPPO BY SMX K ATTORNEY ELECTRICAL PLUG GUARD BACKGROUND OF THE INVENTION This invention relates to an electrical plug guard in the form of a flat disc having an outer rim surrounding a central body portion and joined resiliently by resilient electrically non-conductive ribs extending around and between the outer rim and central body portion, the latter including slots to receive and frictionally hold the prongs of an electrical plug whereby the body portion is held adjacent to the plug when pressure is applied against the outer rim, which extends radially beyond the periphery of the electrical plug, to move the rim away from the plug causing the resliently joining ribs to become extended and form a protective cage around the prongs of the plug. A persons fingers when grasping the plug for insertion into an electrical outlet are thereby protected, since if they slip or accidentally move beyond the edge of the plug they contact the outer rim of the disc pressing it forward causing the ribs to extend and the protective cage to form to prevent contact between the persons fingers and prongs of the electrical plug when they are being inserted into an electrical outlet. When the plug is inserted in the outlet, the outer rim is brought back into the plane of the central body portion by the resiliency of the ribs whereby the entire device becomes a flat disc with all parts lying heretofore known have required complicated mechanical construction, are expensive to make, relatively quick to fail, and are usually incorporated as a part of the plug itself. The plug guard in accordance with this invention can be purchased separately, made of various sizes and shapes for use with a wide variety of electrical plugs on electrical appliances, extension cords and the like already purchased and in use.
SUMMARY OF THE INVENTION An electrical plug guard which comprises a flat disc, an outer rim portion of greater circumference than that of an electrical plug with which it is to be used, a central body portion, slots therein to receive and frictionally hold the prongs of an electrical plug, and resilient electrically non-conducting ribs extending around and between said outer rim portion and said central body portion to join together in resilient relationship, said ribs forming a protective cage around the electrical prongs when said outer rim portion is moved away from said electrical plug towards an electrical outlet in which said plug is being inserted, said ribs and outer rim portion resiliently returning to the plane of the central body portion when pressure on the outer rim portion is released thereby returning to the form of a flat disc.
It is an object of this invention to provide an electrical plug guard in the normal form of a flat disc, deformable into a protective cage around the prongs of an electrical plug to which it is affixed when pressure is applied to the outer rim of the disc, and resiliently returnable to the original form of a flat disc when pressure against the outer rim is released.
It is an object of this invention to provide an electrical plug guard which may be sold separately for use on already existing electrical plugs.
It is an object of this invention to provide an electrical plug guard which may be made by a single cutting operation of slots in a flat disc of electrically nonconducting resilient material to form a central body portion, an outer rim portion movable longitudinally therefrom, resilient ribs between and connecting said outer rim and central body portions and slots in said central body portion for frictionally mounting on the prongs of an electrical plug.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of the electrical plug guard in accordance with this invention.
FIG. 2 is an elevation view of this invention showing the plug guard mounted on an electrical plug.
FIG. 3 is an elevation view of this invention showing the plug guard mounted on an electrical plug with the outer rim portion of the plug guard moved outwardly from the plug body and illustrating the connecting resilient ribs forming a protective cage around the prongs of the electrical plug.
FIG. 4 is a perspective view of this invention taken from the rear of the plug guard showing the outer rim portion moved away from the central body portion and the resilient ribs forming a protective cage.
DESCRIPTION OF PREFERRED EMBODIMENTS Referring to the drawings in detail, the electrical plug guard in accordance with this invention may consist of a round flat disc generally designated 1, having an outer rim 2, a central body portion 3, and ribs 4 therebetween connecting outer rim 2 with central body portion 3. Slots 5 are formed in central body portion 3 to receive and frictionally hold the prongs 6 of an electrical plug 7. Two slots 5 are illustrated in FIG. 1 for receiving two prongs of an ordinary household electrical plug. It is obvious however that one or more additional slots or holes may be formed in the central body portion 3 to receive one or more additional prongs of an electrical plug, such as a third prong for a ground, so this invention may be used with a wide variety of electrical plugs. The circumference of outer rim 2 is greater than the circumference of the electrical plug 7 on which it is used to enable contact with outer rim 2 by a persons fingers when grasping plug 7 for insertion into an electrical outlet.
The ribs 4 are formed by cutting slots 8 in the disc 1 in accordance with the following arrangement. Each rib 4 is bordered by a slot 8 beginning from a midpoint 8a and diverging in one direction to a first end point 8b ending at the inner edge of outer rim 2 and in an opposite direction to a second end point ending at the outer edge of central body portion 3. The slots 8 are arranged circumferentially around the disc 1 so that midpoint 80 to first end point 8b of each slot is substantially parallel to and spaced radially from second end point 80 to midpoint 8a of the next adjacent slot 8. Further, first end point 8b of each slot 8, midpoint 8a of the first adjacent slot 8 in one circumferential direction, and second end point 8c of the second adjacent slot 8 in the same circumferential direction, are in radial alignment when outer rim 2 and central body portion 3 are in the same plane, each of said points spaced apart with first end points 8b lying radially farthest from the central axis, said radially aligned midpoints 8a lying radially second farthest from the central axis, and said radially aligned second end points 8c lying closest to the central axis. Each rib 4 is thereby formed between midpoint 8a to first end point 8!; of one slot and inwardly spaced second end point 8c to midpoint 8a of a next adjacent slot in which midpoint 8a of the first slot is radially aligned with second end point 80 of the next adjacent slot and in which first end point 8b of the first slot is radially aligned with midpoint 8a of the next adjacent slot.
FIG. 1 illustrates eight slots 8 which in the manner described above have eight series of radially aligned first end points 8b of one slot 8, midpoints 8a of an adjacent second slot 8, and second end points 80 of a third slot 8 which is adjacent to the second slot 8, the series of eight radially aligned points being spaced equidistantly apart around the disc 1. Thus, eight ribs 4 are formed in the embodiment of this invention illustrated in FIG. 1.
When outer rim 2 is moved out of the plane of central body portion 3 and away therefrom causing ribs 4 to extend to provide a protective cage around prongs 6, the second end points 80 are moved out of radial alignment with first end points 8b and midpoints 8a since outer rim 2 tends to rotate axially with respect to central body portion 3 when it is moved longitudinally away therefrom.
A suitable material for the flat disc body 1 is polypropylene although other materials having similar properties of resiliency and electrical non-conductivity may be used.
The electrical plug guard in accordance with this invention is mounted on an electrical plug 7 by inserting prongs 6 through slots 5 until the disc 1 is flush against the inner face of plug 7. Slots 5 are made just large enough to frictionally engage prongs 6 and to frictionally hold central body portion 3 against the inner face of plug 7. When plug 7 is to be inserted into an electrical outlet, a persons fingers will contact outer rim 2 of disc 1 in the event they extend beyond the body of electrical plug 7, thus forcing outer rim 2 away from plug 7 while central body portion 3 of disc 1 is held against plug 7 by the frictional engagement of slots 5 with prongs 6. This forces ribs 4 to become extended forming a protective cage around prongs 6 to prevent a persons fingers from coming into contact with said prongs when they are inserted into an electrical outlet thereby protecting against electrical shock.
When pressure against outer rim 2 is released, the resiliency of ribs 4 and their integral connection between outer rim 2 and central body portion 3 as formed in the manner described above causes outer rim 2 and ribs 4 to return to the plane of central body portion 3 thus being again in the form of a flat disc.
The disc may be very thin, on the order of onesixteenth inches thick or less. To facilitate extension of ribs 4 and movement of outer rim 2 away from central body portion 3, the portions of ribs 4 between first end points 8b, midpoints 8a, and second end points 8c, may be slightly notched to lessen the thickness between such points from that of outer rim 2, central body portion 3 and the intermediate portions of ribs 4, thus providing hinge means or hinge lines 9. Such hinge lines 9 may be formed by notching one or both sides of disc 1 between the points as described. The thickness of hinge lines 9 will depend on the material used to make the plug guard. For example, if polypropylene is used, the hinge lines 9 may be on the order of one-thirty secondths of an inch or approximately half the thickness of the remaining portions of the plug guard.
The particular form of the invention described herein and illustrated in the accompanying drawings are preferred embodiments, and various changes in the size, shape, materials and arrangement of parts may be made without departing from the spirit of the invention or the scope of the attached claims.
Having thus set forth my invention, what I claim is:
1. An electrical plug guard comprising a flat disc having a central body portion, slots therein for receiving and frictionally holding the prongs of an electrical plug, an outer rim portion of said disc which extends radially beyond the periphery of an electrical plug when mounted thereon, and slotted means to permit longitudinal movement of said outer rim portion with respect to said central body portion, said slotted means simultaneously providing an electrically non-conductive barrier around the prongs of an electrical plug when said outer rim portion is moved longitudinally away from said central body portion and an electrical plug on which it is mounted.
2. An electrical plug guard as set forth in claim 1, wherein said slotted means to permit longitudinal movement of said outer rim portion with respect to said central body portion consists of resilient material joining said outer rim portion to said central body portion.
3. An electrical plug guard as set forth in claim I, wherein said flat disc, said central body portion, said outer rim portion, and said slotted means to permit longitudinal movement of said outer rim portion with respect to said central body portion are of the same material and thickness.
4. An electrical plug guard as set forth in claim 1, wherein said slotted means to permit longitudinal movement of said outer rim portion with respect to said central body portion includes ribs joining said outer rim portion to said central body portion.
5; An electrical plug guard as set forth in claim 1, including slots forming said slotted means to permit longitudinal movement of said outer rim portion with respect to said central body portion, said slots being interposed between and around said outer rim portion and said central body portion to provide ribs integrally joining said outer rim portion to said central body portion.
6. An electrical plug guard as set forth in claim 5, wherein said slots include a midpoint and diverge in one direction towards a first end point at the inner edge of said outer rim portion and diverge in a different direction towards a second end point at the outer edge of said central body portion, the first end point of each of said slots being radially aligned with the midpoint of the slot next adjacent in a circumferential direction, and with the second end point of the next following slot in the same circumferential direction when said outer rim portion and said central body portion are in the same plane, said arrangement of slots providing ribs integrally joining said outer rim portion to said central body portion.
7. An electrical plug guard as set forth in claim 6, including resilient hinge means joining said outer rim portion and said central body portion to said ribs.
8. An electrical plug guard as set forth in claim 7, wherein said hinge means include notches cut partially of an inch thick, wherein said central body portion, said outer rim portion and said ribs are of the same material, wherein said material is resilient and electrically nonconductive.

Claims (9)

1. An electrical plug guard comprising a flat disc having a central body portion, slots therein for receiving and frictionally holding the prongs of an electrical plug, an outer rim portion of said disc which extends radially beyond the periphery of an electrical plug when mounted thereon, and slotted means to permit longitudinal movement of said outer rim portion with respect to said central body portion, said slotted means simultaneously providing an electrically non-conductive barrier around the prongs of an electrical plug when said outer rim portion is moved longitudinally away from said central body portion and an electrical plug on which it is mounted.
2. An electrical plug guard as set forth in claim 1, wherein said slotted means to permit longitudinal movement of said outer rim portion with respect to said central body portion consists of resilient material joining said outer rim portion to said central body portion.
3. An electrical plug guard as set forth in claim 1, wherein said flat disc, said central body portion, said outer rim portion, and said slotted means to permit longitudinal movement of said outer rim portion with respect to said central body portion are of the same material and thickness.
4. An electrical plug guard as set forth in claim 1, wherein said slotted means to permit longitudinal movement of said outer rim portion with respect to said central body portion includes ribs joining said outer rim portion to said central body portion.
5. An electrical plug guard as set forth in claim 1, including slots forming said slotted means to permit longitudinal movement of said outer rim portion with respect to said central body portion, said slots being interposed between and around said outer rim portion and said central body portion to provide ribs integrally joining said outer rim portion to said central body portion.
6. An electrical plug guard as set forth in claim 5, wherein said slots include a midpoint and diverge in one direction towards a first end point at the inner edge of said outer rim portion and diverge in a different direction towards a second end point at the outer edge of said central body portion, the first end point of each of said slots being radially aligned with the midpoint of the slot next adjacent in a circumferential direction, and with the second end point of the next following slot in the same circumferential direction when said outer rim portion and said central body portion are in the same plane, said arrangement of slots providing ribs integrally joining said outer rim portion to said central body portion.
7. An electrical plug guard as set forth in claim 6, including resilient hinge means joining said outer rim portion and said central body portion to said ribs.
8. An electrical plug guard as set forth in claim 7, wherein said hinge means include notches cut partially into said disc on lines between said radially aligned first end points, midpoints, and second end points of the respective slots forming said ribs.
9. An electrical plug guard as set forth in claim 8, wherein said flat disc is no greater than one-sixteenth of an inch thick, wherein said central body portion, said outer rim portion and said ribs are of the same material, wherein said material is resilient and electrically non-conductive.
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3865453A (en) * 1973-10-05 1975-02-11 Leviton Manufacturing Co Safety adapter for three-wire grounding plug
US4391481A (en) * 1981-03-30 1983-07-05 Golden Theodore A Child-proof electrical plug sheath
US5423689A (en) * 1993-06-29 1995-06-13 Valentino; George Safety shhield for an electric plug
US5518411A (en) * 1994-06-01 1996-05-21 Belleci; Sal J. Electrical plug with retractable prong shield
US5599196A (en) * 1995-05-01 1997-02-04 Powell; Patti J. Electrical plug safety cover
US20020036432A1 (en) * 2000-09-27 2002-03-28 Yoshitaka Nagao Power converter, power generating apparatus and plug
US20050106909A1 (en) * 2003-11-14 2005-05-19 Dickie Robert G. Safety device for electrical plugs and a method of attaching same
US20100285679A1 (en) * 2009-05-05 2010-11-11 Miller Ryan A Spring boot
US20160064850A1 (en) * 2014-08-27 2016-03-03 Robert John Draper, JR. Apparatus for covering electrical plugs
US10700465B2 (en) 2018-09-15 2020-06-30 Samuel Deskin Electrical plug shock protection device

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US2458153A (en) * 1946-06-07 1949-01-04 Festge Charles Safety device for electric plugs
US2567727A (en) * 1949-04-07 1951-09-11 American Phenolic Corp Connector having an automatic locking sleeve
US3449706A (en) * 1967-10-12 1969-06-10 Hubbell Inc Harvey Protective enclosure for electrical wiring devices

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2458153A (en) * 1946-06-07 1949-01-04 Festge Charles Safety device for electric plugs
US2567727A (en) * 1949-04-07 1951-09-11 American Phenolic Corp Connector having an automatic locking sleeve
US3449706A (en) * 1967-10-12 1969-06-10 Hubbell Inc Harvey Protective enclosure for electrical wiring devices

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3865453A (en) * 1973-10-05 1975-02-11 Leviton Manufacturing Co Safety adapter for three-wire grounding plug
US4391481A (en) * 1981-03-30 1983-07-05 Golden Theodore A Child-proof electrical plug sheath
US5423689A (en) * 1993-06-29 1995-06-13 Valentino; George Safety shhield for an electric plug
US5518411A (en) * 1994-06-01 1996-05-21 Belleci; Sal J. Electrical plug with retractable prong shield
US5599196A (en) * 1995-05-01 1997-02-04 Powell; Patti J. Electrical plug safety cover
US20020036432A1 (en) * 2000-09-27 2002-03-28 Yoshitaka Nagao Power converter, power generating apparatus and plug
US6770986B2 (en) * 2000-09-27 2004-08-03 Canon Kabushiki Kaisha Power converter, power generating apparatus and plug
US20050106909A1 (en) * 2003-11-14 2005-05-19 Dickie Robert G. Safety device for electrical plugs and a method of attaching same
WO2005048411A1 (en) * 2003-11-14 2005-05-26 Elumina Lighting Technologies, Inc. Safety device for electrical plugs and a method of attaching the same
US20050159031A1 (en) * 2003-11-14 2005-07-21 Elumina Lighting Technologies, Inc. Safety device for electrical plugs and a method of attaching the same
US7011535B2 (en) 2003-11-14 2006-03-14 Elumina Lighting Technologies, Inc. Safety device for electrical plugs and a method of attaching same
US7094080B2 (en) 2003-11-14 2006-08-22 American Tack & Hardware Co., Inc. Safety device for electrical plugs and a method of attaching the same
US20100285679A1 (en) * 2009-05-05 2010-11-11 Miller Ryan A Spring boot
US20160064850A1 (en) * 2014-08-27 2016-03-03 Robert John Draper, JR. Apparatus for covering electrical plugs
US10700465B2 (en) 2018-09-15 2020-06-30 Samuel Deskin Electrical plug shock protection device

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