EP0263079A2 - A tap/switch combination for civil range electrical appliances - Google Patents
A tap/switch combination for civil range electrical appliances Download PDFInfo
- Publication number
- EP0263079A2 EP0263079A2 EP87830330A EP87830330A EP0263079A2 EP 0263079 A2 EP0263079 A2 EP 0263079A2 EP 87830330 A EP87830330 A EP 87830330A EP 87830330 A EP87830330 A EP 87830330A EP 0263079 A2 EP0263079 A2 EP 0263079A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- tap
- lever
- switch combination
- arm
- linkages
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- 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
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
- H01R13/7036—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part the switch being in series with coupling part, e.g. dead coupling, explosion proof coupling
Definitions
- This invention relates to a tap/switch combination for civil range electrical appliances, comprising an electric current tap provided with receptacles for an electric consumer plug, and an electric switch provided with mechanical linkages for cutting off the power supply to said tap.
- interlock devices are enforced by regulatory bodies to protect persons and properties in such particular environments as indoor spaces where a potential fire or explosion danger exists, construction sites, and damp or wet places.
- Manipulating an electric plug under a load may, in fact, constitute a hazard for the user, whether by arcing, or flashing and deterioration of the tap inlet holes, or wear and cratering of the pins, or damaging the delicate receptacle protecting arrangement in the instance of taps equipped with shutters.
- the technical problem underlying this invention is that of providing a tap/switch combination for civil range electrical appliances which has such constructional and operational characteristics as to obviate the drawback of the cited prior art.
- the solutive idea on which this invention is based is to provide for automatic cut-off of the voltage supply to the receptacles of a current tap with the plug pulled out.
- this invention provides a tap/switch combination as indicated, which is characterized by that the operation of said mechanical cut-off linkages is controlled by the insertion and withdrawal movements of the plug into/out of said tap.
- said operation is accomplished by an interlock mechanism extending between the tap receptacles and the cut-off linkages.
- said interlock mechanism comprises a lever journalled on the interior of said tap and being displaceable angularly from an operating position, where a first arm of the lever lies close to and transversely of at least one of said receptacles and a second arm of the lever acts on said cut-off linkages, to an inoperative position where said second arm is uncoupled from said cut-off linkages, and a spring-loaded means effective to hold the lever in the operating position thereof, said lever being displaceable angularly on the plug being inserted into said tap.
- a tap/switch combination according to the invention and comprising a current tap 2 and a switch 3, specifically intended for mounting within a frame, omitted from the drawings, for a flush-mounted or enclosed box civil range electrical appliances, such as of the types commercially known as LIVING and MAGIC.
- the combination 1 has a substantially parallelepipedal outward shape, and a tap body 4 and switch body 5 defined therein which are both box-shaped and laid close against each other along two corresponding walls thereof; for convenience of illustration, these two side-by-side walls will be regarded as a single wall designated by the reference numeral 6.
- a pair of poles Placed within the body 5 of the switch 3 are a pair of poles, not shown, one of which is located close against the wall 6, and the other at an opposed wall 5a; provided along both poles are a respective fixed contact 7 carried on the body 5 and a respective moving contact 8, mounted on a moving contact holder assembly 9 to be explained hereinafter.
- the switch 3 also includes mechanical cut-off linkages, generally designated 10, which are supported on the body 5; the cut-off linkages 10 include a tumbler key 11 associated with the moving contact holder assembly 9.
- the moving contact holder assembly 9 comprises a moving contact holder body 12 which includes electric paths and non-conductive portions and has, mounted on one end thereof, the moving contacts 8, which are thus held in mutually parallel and spaced-apart relationship. Between the key 11 and the moving contact holder assembly 9, there is provided a spring-biased toggle mechanism 13, known per se.
- the mechanical cut-off linkages 10 further comprise a spring-loaded rest lever 14 which is journalled in the body 5 and displaceable angularly from a first position to a second position, as made clear hereinafter.
- Said rest lever 14 includes, in turn, two arms 14a, 14b lying substantially at right angles to each other.
- the larger arm, 14a has a pair of lugs 15 and 16 facing the wall 6 and opposed wall 5a, respectively; moreover, the arm 14a is formed with a slit 17.
- the smaller arm, 14b With the rest lever 14 in its first position, or position of consent to contact making, the smaller arm, 14b, is adapted to provide a bearing point for the moving contact holder body 1, purposely formed with a rest dog 12a, and therefore to enable the switch 3 to make.
- the rest lever 14 is constantly biased toward said position of consent to contact making by a spring, not shown.
- amperometer coil 18 supported on the switch body 5 at the wall 5a; the amperometer coil 18 has a set number of turns of a large cross-sectional area wire lead and is provided with a cylindrical pusher 19 operative to engage with the lug 16 on the occurrence of shorting currents and to move the rest lever 14 accordingly to its contact break position, thus releasing the contact holder assembly 9 and causing the switch 3 to break.
- the switch 3 also includes an additional arm 20, formed integrally with the rest lever 14 and extending parallel to the second arm 14b.
- the additional arm 20 is provided with an adjustable contact tip 20a and adapted for engagement by a bimetallic strip thermal relay, not shown, to move the rest lever 14 into its contact breaking position.
- the current tap 2 has three receptacles 21,22,23 formed of corresponding bushings 24,25,26 which are supported on the tap body 4 in mutually spaced-apart relationship.
- the middle receptacle 22 is, in particular, intended for grounding the current tap 2.
- Said receptacles, 21,22 and 23, are adapted to receive respective prongs 27,28 and 29 of an electric plug 30, known per se.
- the tap/switch combination 1 includes an interlock mechanism 31,32 extending between the receptacles 21,22,23 of the tap 2 and the cut-off linkages 10 of the switch 3.
- the above-mentioned interlock mechanism comprises a substantially crank-like lever 31 journalled on the interior of the body 4 of the current tap 2 and being displaceable angularly from an operating position to an inoperative position, as explained more clearly hereinafter.
- the interlock mechanism further comprises a spring-loaded means 32 arranged to act on the lever 31 for holding it in its operating position.
- the lever 31 includes a lever body 33 of C-like configuration which is provided with a pair of pins, both indicated at 34, facing each other in aligned relationship.
- the pins 34 fit into respective seats 35 formed in the tap body 4 close to the wall 6.
- the lever 31 also has a first arm 36 and second arm 37 extending substantially at right angles to each other and being secured to the lever body 33; more specifically, the first arm 36 consists of a lug extending perpendicularly to the lever body 33 in the proximity of the intermediate receptacle 22 to the receptacles 21 and 23, whilst the second arm 37 extends aligned to one of the sides of said C-shaped body 33.
- the second arm 37 extends through an aperture 38 formed in the wall 6, and that with the lever 31 in its operating position, the first arm 36 extends transversely of the receptacle 22 and the second arm 37 is active on said cut-off linkages 10.
- the second arm 37 will be active on the first arm 14a of the rest lever 14, thus moving it angularly into the aforesaid contact breaking position.
- the first arm 36 With the lever 31 in said inoperative position, the first arm 36 will be positioned outside the receptacle 22 to enable introduction of the plug 30, and the second arm 37 will be uncoupled from the cut-off linkages.
- the spring-biased means 32 operative to constantly bias the lever 31 toward its operating position, is preferably composed of a pair of parallel lugs 39 formed from an elastically deformable material and being supported at one end by the lever body 33 and having the other, free end in pushing contact with the wall 6.
- the lever body 33, first arm 36, second arm 37, and aforesaid lugs 39 are a one piece construction, being preferably molded as such from a synthetic plastic material.
- the tap/switch combination 1 operates as set forth herein below.
- the lever 31 With the plug 30 removed from the current tap 2 of the tap/switch combination 1, i.e. with the prongs 27,28,29 out of the receptacles 21,22,23, the lever 31 will be held in its operating position by the spring-loaded means 32, with its first arm 36 set to interfere with the receptacle 22 and its second arm 37 to act on the cut-off linkages 10 (re. Figures 4 and 5).
- the rest lever 14 will be held, therefore, in its contact breaking position, and the moving contacts 8 at a set distance away from their corresponding fixed contacts 7.
- the prong 28, which corresponds with the receptacle 22 will contact the first arm 36 of the lever 31 (re. Figures 6 and 7) and cause the lever 31 to be displaced angularly from its operating position to its inoperative position where the second arm 37 is uncoupled from the rest lever 14 of the cut-off linkages 10.
- the switch 3 can be brought to a contact making condition.
- the first arm 36 of the lever 31 would consist (re. Figures 8 and 9) of three lugs 36a,36b,36c set parallel at a mutual distance apart, of which the extreme lugs 36a and 36c lie at the receptacles 21 and 23.
- the current tap/switch combination of this invention affords the primary advantage that a plug can be pushed into and pulled out of a current tap always in an open circuit condition, regardless of the switch setting. Thus, the risk of arcing and flashing is avoided which, as is known, would result in both the tap receptacles and prongs of the consumer plug becoming deteriorated.
- the tap/switch combination according to the invention can be considerably more reliable than conventional switch taps for civil electric appliances, it affording complete and automatic safety especially for the incompetent user, in full conformity with the lawful provisions mentioned in the preamble.
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Keying Circuit Devices (AREA)
- Electronic Switches (AREA)
- Switches With Compound Operations (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Connecting Device With Holders (AREA)
- Details Of Television Systems (AREA)
- Executing Machine-Instructions (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
Description
- This invention relates to a tap/switch combination for civil range electrical appliances, comprising an electric current tap provided with receptacles for an electric consumer plug, and an electric switch provided with mechanical linkages for cutting off the power supply to said tap.
- Known are, in the branch of electric taps for industrial plugs, mechanical interlock or other devices which are controlled by a safety switch, whereby the plug can be neither pulled out nor pushed in unless the switch is in its open or break condition.
- Such interlock devices are enforced by regulatory bodies to protect persons and properties in such particular environments as indoor spaces where a potential fire or explosion danger exists, construction sites, and damp or wet places.
- In the field of electric plugs for domestic and the like uses, regulations on work accident prevention, as provided by D.P.R. 547 of April 27, 1955, No. 311, and regulations on proper workmanship (e.g. as set forth by COMITATO ELETTROTECNICO ITALIANO C.E.I.) provide for electric plug take-offs, designed to power consumers rating higher than 1,000 W, to be protected at an upstream location by either a fused or magnetothermal switch, to only enable plugging in and out in an open circuit condition, i.e. in a dead receptacle condition.
- Manipulating an electric plug under a load may, in fact, constitute a hazard for the user, whether by arcing, or flashing and deterioration of the tap inlet holes, or wear and cratering of the pins, or damaging the delicate receptacle protecting arrangement in the instance of taps equipped with shutters.
- The technical problem underlying this invention is that of providing a tap/switch combination for civil range electrical appliances which has such constructional and operational characteristics as to obviate the drawback of the cited prior art. The solutive idea on which this invention is based is to provide for automatic cut-off of the voltage supply to the receptacles of a current tap with the plug pulled out.
- Based on that solutive idea and to solve the aforesaid problem, this invention provides a tap/switch combination as indicated, which is characterized by that the operation of said mechanical cut-off linkages is controlled by the insertion and withdrawal movements of the plug into/out of said tap.
- Advantageously, said operation is accomplished by an interlock mechanism extending between the tap receptacles and the cut-off linkages.
- Advantageously, in a preferred embodiment of the invention, said interlock mechanism comprises a lever journalled on the interior of said tap and being displaceable angularly from an operating position, where a first arm of the lever lies close to and transversely of at least one of said receptacles and a second arm of the lever acts on said cut-off linkages, to an inoperative position where said second arm is uncoupled from said cut-off linkages, and a spring-loaded means effective to hold the lever in the operating position thereof, said lever being displaceable angularly on the plug being inserted into said tap.
- Further features and the advantages of this invention will become apparent from the following detailed description of a preferred embodiment thereof, given here by way of illustration and not of limitation with reference to the accompanying drawing figures.
- In the drawings:
- Figure 1 is a perspective view showing diagramatically a current tap/switch combination according to this invention;
- Figure 2 is an enlarged scale, perspective detail view of the combination shown in Figure 1;
- Figure 3 is a plan and sectional view showing diagramatically the tap/switch combination of Figure 1;
- Figures 4 and 6 are diagramatic views, in elevation and in section, of the tap/switch combination of Figure 1, in two different operating conditions thereof;
- Figure 5 is a diagramatic view of the inventive combination, taken along the section line V-V in Figure 4;
- Figure 7 is a diagramatic view of the inventive combination, taken along the section line VII-VII in Figure 6;
- Figure 8 is a perspective view showing diagramatically a second embodiment of the tap/switch combination according to this invention; and
- Figure 9 is an enlarged scale, perspective detail view of the combination shown in Figure 1.
- With reference to the drawing figures, comprehensively designated 1 is a tap/switch combination according to the invention and comprising a
current tap 2 and aswitch 3, specifically intended for mounting within a frame, omitted from the drawings, for a flush-mounted or enclosed box civil range electrical appliances, such as of the types commercially known as LIVING and MAGIC. - The combination 1 has a substantially parallelepipedal outward shape, and a
tap body 4 andswitch body 5 defined therein which are both box-shaped and laid close against each other along two corresponding walls thereof; for convenience of illustration, these two side-by-side walls will be regarded as a single wall designated by thereference numeral 6. - Placed within the
body 5 of theswitch 3 are a pair of poles, not shown, one of which is located close against thewall 6, and the other at anopposed wall 5a; provided along both poles are a respective fixed contact 7 carried on thebody 5 and a respective movingcontact 8, mounted on a movingcontact holder assembly 9 to be explained hereinafter. - The
switch 3 also includes mechanical cut-off linkages, generally designated 10, which are supported on thebody 5; the cut-off linkages 10 include atumbler key 11 associated with the movingcontact holder assembly 9. - The moving
contact holder assembly 9 comprises a movingcontact holder body 12 which includes electric paths and non-conductive portions and has, mounted on one end thereof, the movingcontacts 8, which are thus held in mutually parallel and spaced-apart relationship. Between thekey 11 and the movingcontact holder assembly 9, there is provided a spring-biased toggle mechanism 13, known per se. - The mechanical cut-
off linkages 10 further comprise a spring-loadedrest lever 14 which is journalled in thebody 5 and displaceable angularly from a first position to a second position, as made clear hereinafter. Saidrest lever 14 includes, in turn, twoarms lugs wall 6 and opposedwall 5a, respectively; moreover, thearm 14a is formed with aslit 17. - With the rest lever 14 in its first position, or position of consent to contact making, the smaller arm, 14b, is adapted to provide a bearing point for the moving contact holder body 1, purposely formed with a
rest dog 12a, and therefore to enable theswitch 3 to make. - By contrast, with the rest lever 14 in its second position, or contact break position, the
second arm 14b would be pivoted away from the movingcontact holder body 12, thereby affording no bearing point for thedog 12a and causing theswitch 3 to break. - The
rest lever 14 is constantly biased toward said position of consent to contact making by a spring, not shown. - Indicated at 18 is an amperometer coil supported on the
switch body 5 at thewall 5a; theamperometer coil 18 has a set number of turns of a large cross-sectional area wire lead and is provided with acylindrical pusher 19 operative to engage with thelug 16 on the occurrence of shorting currents and to move therest lever 14 accordingly to its contact break position, thus releasing thecontact holder assembly 9 and causing theswitch 3 to break. - The
switch 3 also includes anadditional arm 20, formed integrally with therest lever 14 and extending parallel to thesecond arm 14b. Theadditional arm 20 is provided with anadjustable contact tip 20a and adapted for engagement by a bimetallic strip thermal relay, not shown, to move therest lever 14 into its contact breaking position. - The
current tap 2 has threereceptacles corresponding bushings tap body 4 in mutually spaced-apart relationship. Themiddle receptacle 22 is, in particular, intended for grounding thecurrent tap 2. - Said receptacles, 21,22 and 23, are adapted to receive
respective prongs electric plug 30, known per se. - In accordance with this invention, the tap/switch combination 1 includes an
interlock mechanism receptacles tap 2 and the cut-off linkages 10 of theswitch 3. - According to the invention, the above-mentioned interlock mechanism comprises a substantially crank-
like lever 31 journalled on the interior of thebody 4 of thecurrent tap 2 and being displaceable angularly from an operating position to an inoperative position, as explained more clearly hereinafter. - The interlock mechanism further comprises a spring-loaded
means 32 arranged to act on thelever 31 for holding it in its operating position. - The
lever 31 includes alever body 33 of C-like configuration which is provided with a pair of pins, both indicated at 34, facing each other in aligned relationship. - The
pins 34 fit intorespective seats 35 formed in thetap body 4 close to thewall 6. - The
lever 31 also has afirst arm 36 andsecond arm 37 extending substantially at right angles to each other and being secured to thelever body 33; more specifically, thefirst arm 36 consists of a lug extending perpendicularly to thelever body 33 in the proximity of theintermediate receptacle 22 to thereceptacles 21 and 23, whilst thesecond arm 37 extends aligned to one of the sides of said C-shaped body 33. - It should be noted that, according to this invention, the
second arm 37 extends through anaperture 38 formed in thewall 6, and that with thelever 31 in its operating position, thefirst arm 36 extends transversely of thereceptacle 22 and thesecond arm 37 is active on said cut-offlinkages 10. - In particular, with the
lever 31 in its operating position, thesecond arm 37 will be active on thefirst arm 14a of therest lever 14, thus moving it angularly into the aforesaid contact breaking position. - With the
lever 31 in said inoperative position, thefirst arm 36 will be positioned outside thereceptacle 22 to enable introduction of theplug 30, and thesecond arm 37 will be uncoupled from the cut-off linkages. - In the exemplary embodiment discussed, the spring-
biased means 32, operative to constantly bias thelever 31 toward its operating position, is preferably composed of a pair ofparallel lugs 39 formed from an elastically deformable material and being supported at one end by thelever body 33 and having the other, free end in pushing contact with thewall 6. - Advantageously, the
lever body 33,first arm 36,second arm 37, andaforesaid lugs 39 are a one piece construction, being preferably molded as such from a synthetic plastic material. - The tap/switch combination 1 according to this invention operates as set forth herein below.
- With the
plug 30 removed from thecurrent tap 2 of the tap/switch combination 1, i.e. with theprongs receptacles lever 31 will be held in its operating position by the spring-loadedmeans 32, with itsfirst arm 36 set to interfere with thereceptacle 22 and itssecond arm 37 to act on the cut-off linkages 10 (re. Figures 4 and 5). - The
rest lever 14 will be held, therefore, in its contact breaking position, and themoving contacts 8 at a set distance away from their corresponding fixed contacts 7. - It is important to observe that with the combination 1 in the above-outlined condition, whereby the
plug 30 is separated from thecurrent tap 2, if thekey 11 of theswitch 3 is depressed toward a contact making position, thekey 11 will tend to return at once to its contact breaking position. In fact, with the rest lever 14 in the contact breaking position, therest dog 12a of the movingcontact holder body 12, being shifted by thekey 11 via the spring-loadedtoggle mechanism 13, will no longer be contacting therest lever 14. Thus, locking of the aforesaid movingcontact holder body 12 and spring-loadedtoggle mechanism 13 in a contact making position is effectively prevented, and thekey 11 can move back to its contact breaking position by the action of the spring-loadedtoggle mechanism 13. - On introducing the
prongs plug 30 into thereceptacles tap 2, theprong 28, which corresponds with thereceptacle 22, will contact thefirst arm 36 of the lever 31 (re. Figures 6 and 7) and cause thelever 31 to be displaced angularly from its operating position to its inoperative position where thesecond arm 37 is uncoupled from therest lever 14 of the cut-off linkages 10. Thus, by operating thekey 11, theswitch 3 can be brought to a contact making condition. - Finally, on pulling the
plug 30 out of thecurrent tap 2, the spring-loadedmeans 32, i.e. theelastic lugs 39, will bring thelever 31 back into its operating position, thus driving the cut-off linkages 10 to open the contacts. - It should be noted that, consistently with the considerations made in the foregoing, in the tap/switch combination of this invention operation of the cut-
off linkages 10 is controlled by the insertion and withdrawal of theplug 30 into/out of thecurrent tap 2, such operation being enacted with the intermediary of the interlock mechanism comprising thelever 31 and spring-loadedmeans 32. - Advantageously in those cases where the
current tap 2 includes nomiddle ground receptacle 22, and consequently, theplug 30 has no correspondingmiddle prong 28, thefirst arm 36 of thelever 31 would consist (re. Figures 8 and 9) of threelugs extreme lugs receptacles 21 and 23. - In this second embodiment of the tap/switch combination according to the invention, the angular movement of the
lever 31 by operation of the cut-off linkages 10 would be brought about, therefore, by insertion and withdrawal of theprongs receptacles 21 and 23 of thetap 2. - The current tap/switch combination of this invention affords the primary advantage that a plug can be pushed into and pulled out of a current tap always in an open circuit condition, regardless of the switch setting. Thus, the risk of arcing and flashing is avoided which, as is known, would result in both the tap receptacles and prongs of the consumer plug becoming deteriorated.
- Consequently, the tap/switch combination according to the invention can be considerably more reliable than conventional switch taps for civil electric appliances, it affording complete and automatic safety especially for the incompetent user, in full conformity with the lawful provisions mentioned in the preamble.
- The tap/switch combination disclosed hereinabove is obviously susceptible to changes and modifications within the protection scope of the instant invention as set forth in the appended claims.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT87830330T ATE102753T1 (en) | 1986-09-29 | 1987-09-15 | SOCKET SWITCH COMBINATION FOR CIVIL USE ELECTRICAL DEVICES. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT21842/86A IT1197299B (en) | 1986-09-29 | 1986-09-29 | SOCKET-SWITCH GROUP FOR ELECTRICAL EQUIPMENT OF CIVIL SERIES |
IT2184286 | 1986-09-29 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0263079A2 true EP0263079A2 (en) | 1988-04-06 |
EP0263079A3 EP0263079A3 (en) | 1990-01-10 |
EP0263079B1 EP0263079B1 (en) | 1994-03-09 |
Family
ID=11187624
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87830330A Expired - Lifetime EP0263079B1 (en) | 1986-09-29 | 1987-09-15 | A tap/switch combination for civil range electrical appliances |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0263079B1 (en) |
AT (1) | ATE102753T1 (en) |
BR (1) | BR8705006A (en) |
DE (1) | DE3789267T2 (en) |
ES (1) | ES2054702T3 (en) |
IT (1) | IT1197299B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2987942A1 (en) * | 2012-03-12 | 2013-09-13 | Hameur Sa | PORTABLE APPARATUS HAVING ELECTRICAL CABLE |
ES2589639A1 (en) * | 2016-04-04 | 2016-11-15 | Ricardo OLIVA CHICA | Mobile plug base with security protection and its activation and deactivation system (Machine-translation by Google Translate, not legally binding) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1903069U (en) * | 1962-06-20 | 1964-10-29 | Busch Jaeger Duerener Metall | SWITCHABLE ELECTRIC SOCKET. |
CH389713A (en) * | 1962-01-27 | 1965-03-31 | Liwa R Walter & Co | Safety socket |
DE1903068A1 (en) * | 1968-01-31 | 1970-08-06 | Reed Rolled Thread Die Co | Self-locking screws and taps for making the same |
DE2257524A1 (en) * | 1971-11-24 | 1973-05-30 | Giuseppe Ortaldo | SAFETY SOCKET |
-
1986
- 1986-09-29 IT IT21842/86A patent/IT1197299B/en active
-
1987
- 1987-09-15 AT AT87830330T patent/ATE102753T1/en not_active IP Right Cessation
- 1987-09-15 DE DE3789267T patent/DE3789267T2/en not_active Expired - Lifetime
- 1987-09-15 EP EP87830330A patent/EP0263079B1/en not_active Expired - Lifetime
- 1987-09-15 ES ES87830330T patent/ES2054702T3/en not_active Expired - Lifetime
- 1987-09-28 BR BR8705006A patent/BR8705006A/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH389713A (en) * | 1962-01-27 | 1965-03-31 | Liwa R Walter & Co | Safety socket |
DE1903069U (en) * | 1962-06-20 | 1964-10-29 | Busch Jaeger Duerener Metall | SWITCHABLE ELECTRIC SOCKET. |
DE1903068A1 (en) * | 1968-01-31 | 1970-08-06 | Reed Rolled Thread Die Co | Self-locking screws and taps for making the same |
DE2257524A1 (en) * | 1971-11-24 | 1973-05-30 | Giuseppe Ortaldo | SAFETY SOCKET |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2987942A1 (en) * | 2012-03-12 | 2013-09-13 | Hameur Sa | PORTABLE APPARATUS HAVING ELECTRICAL CABLE |
WO2013135589A1 (en) * | 2012-03-12 | 2013-09-19 | Hameur S.A. | Portable device comprising an electrical cable |
CN104321939A (en) * | 2012-03-12 | 2015-01-28 | 哈梅尔公司 | Portable device comprising an electrical cable |
GB2517315A (en) * | 2012-03-12 | 2015-02-18 | Hameur Sa | Portable device comprising an electrical cable |
GB2517315B (en) * | 2012-03-12 | 2017-02-08 | Hameur Sa | Portable device comprising an electrical cable |
US9985387B2 (en) | 2012-03-12 | 2018-05-29 | Hameur | Portable device comprising an electrical cable |
ES2589639A1 (en) * | 2016-04-04 | 2016-11-15 | Ricardo OLIVA CHICA | Mobile plug base with security protection and its activation and deactivation system (Machine-translation by Google Translate, not legally binding) |
WO2017174848A1 (en) * | 2016-04-04 | 2017-10-12 | Ricardo Oliva Chica | Movable power socket with safety protective system and energising and de-energising system |
Also Published As
Publication number | Publication date |
---|---|
DE3789267T2 (en) | 1994-12-08 |
ES2054702T3 (en) | 1994-08-16 |
EP0263079B1 (en) | 1994-03-09 |
ATE102753T1 (en) | 1994-03-15 |
DE3789267D1 (en) | 1994-04-14 |
EP0263079A3 (en) | 1990-01-10 |
IT1197299B (en) | 1988-11-30 |
BR8705006A (en) | 1988-05-24 |
IT8621842A1 (en) | 1988-03-29 |
IT8621842A0 (en) | 1986-09-29 |
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