CA1180762A - Meter disconnect adaptor - Google Patents
Meter disconnect adaptorInfo
- Publication number
- CA1180762A CA1180762A CA000393725A CA393725A CA1180762A CA 1180762 A CA1180762 A CA 1180762A CA 000393725 A CA000393725 A CA 000393725A CA 393725 A CA393725 A CA 393725A CA 1180762 A CA1180762 A CA 1180762A
- Authority
- CA
- Canada
- Prior art keywords
- meter
- adaptor
- base
- socket
- flange
- 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.)
- Expired
Links
Landscapes
- Measuring Volume Flow (AREA)
Abstract
A meter disconnect adaptor for assembly into a residential electric meter socket. The adaptor has a base with a peripheral configuration which allows it to be used with either a ringless type of meter box, or in a ring type of mounting, and has blades simulating members extending from one side of the base and resilient fingers extending from the other side of the base for receiving contact blades of the electric meter. In one embodiment of the invention the adaptor has a group of resilient fingers arranged to allow assembly of the meter therein in any one of a number of orientations.
Description
~L1~762 BACKGROUND OE THE INVENTION
1 In the electrical utility industry, it is common to USQ detachable or
1 In the electrical utility industry, it is common to USQ detachable or
2 socket type w~tthour meter assemblies to measure the electrical power
3 consumption of a residence or a commercial establishment. ~ften, for various
4 purposes, it i9 desired to provide an adaptor between the meter socket and the meter. A function o~ one type of adaptor is to d;sconnect the electrical 6 service to the residence or commercial establishment. When electrical service 7 is to be disconnected, it is usually desirable that the meter be left in the 8 assembly for future service reconnection.
9 Various devices have been used for this purpose. Internal switches have been found too costly. Plastic sleeves have sometimes been placed over the 11 meter contact blades, and the meter re-inserted into the meter socket; however, 12 this method leaves no visual indication that the meter is disconnected. Ano-the~
13 method has involved -the use of a pair of plastic adaptors having rearwardly 14 e~tending plastic blades for insertion into the meter socket jaws, and forwardly facing slots, radially spaced from the plastic blades for receiving 16 the meter contact blades, so that the contact blades of the assembled meter 17 are insulated from the meter socket jaw contacts, and the meter is disposed at 18 an angle to its normal position, giving visual indication that the meter is 19 not connected. Such a device is shown in patent 3,61~,708 issued October 19, 1971.
21 However, such devices have found only limited usage, because of the fact 22 that they canno-t be used with all types of meters. In some types of meter E~-3 ~llS~)'76Z
1 sockets, -the rota-tion of the meter required by the adaptor causes mechanical 2 interference between portions of the meter and portions of the socket. In3 other t~pes of sockets the presence of terminal supporting crossbars prevents 4 assembly of the adaptors into the socket contacts.
Other functions of meter adaptors are to allow the use of 3 wire meters 6 on 2 wire sockets and vice versa, for connecting recording voltmeters, or to 7 provide internal switching devices for controlling the power to the circuits.
BRIBF SUMMARY OF T~E rNVENTION
8 The obJect of this invention is to provide an adaptor for assembly into 9 a meter socket, to receive a meter, said adaptor being capable of use with ei-ther a ringless or ring-type of mounting.
11 One form of the adaptor comprises a base and a forwardly e~tending 12 peripheral wall to receive the rear end of a meter.
13 The wall has peripheral flanges that allow the adaptor to be used in 14 either a ringless meter box, with means on the flange to mount the metertherein with a ring, or in a ring-type mounting, in which case the adaptor is 16 mounted onto the meter bo~ with a ring and the meter is mounted onto the adapto 17 by an additional ring. In one embodiment of the adaptor, a series of resilient ~re 18 fingersApositioned on the base to receive and resiliently grip the rearwardly 19 extending blades of a meter. The resilient fingers may be so oriented that when the meter is assembled therewithJthe meter is disposed at an angle to its 21 usual orientation. In another embodiment of the invention, the resilient 22 fingers may be so arranged in sets so that they iorm at least two blade-receivi g 23 slots, so that the meter may be assembled therein ;n one of at least two 24 orientations.
E~-3 r~e 3 . -- --According to a broad aspect of the present invention there is provided an adaptor for assembly into an electric meter socket in place of a standard watt-hour meter of the type having a peripheral mounting flange. The adaptor comprises a base having a peripheral wall. Means projects from the rear side of the base and shaped and positioned to simulate the contact blades of an electric meter for engaging the socket contacts when the adaptor is assembled into the meter socket. Means is provided on the base for receiving contact blades of an electric meter from the forward side of the base. The said wall has a first radially extending flange. The forward side of the flange is so axially positioned that when the adaptor is assembled into a meter socket, the forward side is in the same axial position as the forward face of the mounting flange of an electric meter when assembled into the socket. A second radial flange is provided on the wall forwardly of the first flange and is sized to allow the mounting thereagainst of a meter mounting flange with a U-shaped meter mounting ring.
:
-3a-~L18D'76Z
BRIEF DESCRIPTION OF TÆ FIGURES OF T~E DR~WING
1 Figure 1 is a front plan view of a meter socket adaptor embodying the 2 features of the invention.
3 Figure 2 is a view in section taken on line 2-2 of Figure 1.
I~ Figure 3 is a perspective view of the device of Figure 1 in position for assembly into a meter socket of -the ringless typeO
6 Figure ~ is a front plan view of -the assembly of Figure 3 with a meter 7 assembled therewith.
8 Figure 5 is an enlarged view in section of a portion of the assembly of 9 Fi~ure 4, taken on line 5-5 of Figure 4.
~igure 6 is a view in elevation, partly in section, of the adaptor 11 assembled with a meter and meter socket of the ring type.
DESCRIPTION OF T~E ILLUSq~Aq~ EMBODIMENT
12 Referring to Figures 1-5 of the drawing, there is illustrated one type of 13 meter socket adaptor 10, which is designed for assembly with a meter socket 12, 14 and to receive a meter 14, to enable the meter to be mounted into the socket without making electrical contact with the socket terminals.
16 ~he meter socket 12 of Figures 3-5 is a ringless type which has terminals 17 16 disposed inside a bo,~ 18. The terminals 16 arc intended to receive contact 18 ¦ blades 20 extending from the rear of the meter. The meter is normally retained 19 in place by an apertured cover 22, which bears against the meter mounting flange 24.
21 The adaptor 10 i~ preferably formed of a single piece of molded plastic, 22 and comprises a base plate 26 with a periphera] wall 28 e~tending forwardly 118~)7~iZ
1 Itherefrom forming an internal cavity 30 to receive the rear end of a meter in 2 a manner to be described.
3 ~ Formed integrally with the base and extending rearwardly therefrom are 4 blades 32, which are sized, shaped9 and positioned to simulate the contact blades 20 of the meter.
6 Projecting forwardly from the baqe are a plurality of groups 34 of resilien t 7 fingers 36. Each finger 36 is generally V-shaped with the ape~es pointing 8 ! toward a common central point, forming two intersecting slots 38 and 40.
9 The spacing of the fingers is such that the slots 38 and 40 have a width that allows them to receive and frictionally engage the contact blades 20 of 11 the meter 14.
12 I The groups 34 of fingers are preferably molded integrally with the base 26 13 land are enclosed within the peripheral wall 28, which protects them from damage¦
14 during shipment and handling.
15 l The wall 28 is provided with a radially e~tending bearing flange 42 ]6 j which ha3 a radi31 size substantially the s~e as that of the meter bearing ~ flange 24, so that the adaptor can be mounted in the bo~ 18 in the same manner 18 as a meter, as will appear hereinafter.
19 The e~treme end of the wail 28 is provided with an outwardly turned mounting flange 44. The flange 44 has an overall diameter slightly less than 21 that of the meter flange 24, to enable it to pass through the opening in the 22 box cover 22, yet is large enough to be engaged by a meter clamping ring, as 23 will appear hereinafter.
~24~ As illustrated in Figures 3 and 5, when the adaptor is used to disconnect a meter mounted in a ringless type of socket, the cover 22 of the bo~ 18 is 1~ 7~;2 1 op ~d ~nd the ~eter re~ovea. n e ~darior is then assembled into the socket by 2 inserting the blades 32 thereof into the terminals 16. The cover 22 is then ~3 closed over the adaptor~ whereby the adaptor is retained in place in the same 4 manner that a meter is retained in place, by the portion 42 of the adaptor bein~
disposed behind the periphery of the cover opening.
6 The meter 14 is then assembled with the adaptor by inserting the meter 7 blades 20 into one of the sets of adaptor slots (either 38 or 40) formed by 8 the groups 34 of fingers.
9 The meter flange thereby seats against the mounting flange 44 and may be retained in assembly by a standard ~T-shaped mounting ring 48~ which encloses 11 the meter flange 24 and the flange ~4 on the forward end of -the adap~or.
12 In view of the orientation of the slots ~ and ~, the meter, after such 13 l assembly~ will be oriented at a 45 angle to the vertical, thereby giving a 14 ¦ visual indication to service personnel that the meter i9 not connected. The 15 l fact that the meter may be mounted in the adaptor in any one of four positions 16 alio~s the position of the meter to convey information about the status of the 17 electric servioe at that location.
~;18 The adaptor may also be used to disconnect meters which are mounted on so-19 called ring type bo~es. In such installations a me-ter bo~ 50 is provided with 20 ¦ a meter aperture 52, which has a peripheral flange 54 which has an overall 21 ¦ diameter substantially equal to that of the meter flange 24. The meter is 22 ¦ retained in place by a U-shaped mounting ring 560 23 When the meter is to be disconnected, the ring 56 is removed, and the ~ 24~ adaptor 10 assembled in place of the meter (see ~igure 6). The ring 56 is then E~-3 :~L18~76Z
1 replaced so that it encloses the flange 54 of the meter boY and the bearing 2 flange 42 of the adaptor, thereby retaining the adaptor in place.
3~1 The meter may then be assembled onto the adapt~r as previously described, 4 inserting the blades 20 into a set of slots (38 or 40) of the adaptor, and assembling a second U-shaped ring 58 over the meter flange 24 and the adaptor 6 flange.
7 Although in the illustrated embodiment the slots 38 and 40 are so oriented ~8~ that a me-ter assembled into the adapt~r becomes oriented at a 45 angle to the 9 vertical, it may be desirable in some cases -to omit this feature, and provide only a single slot allowing normal orientation of the meter.
11 Instead of being -formed of a single piece of plastic, the adaptor may, if 12 desired, be made by the assembly of components of appropriate shape. In such 13 case, the blades 32 and the fingers 36 may be made of metal, provided they are 14 suitably insulated from each other.
An adaptor having the external configuration illustrated and described 16 herein~ whick alLows its use iJI eitber ring or ringless ty~e meter sockets9 may 17 have internal configuration or apparatus allowing its use for other functions.
18 ¦I For example, the rearwardly e~tending blades 32 and the fingers 36 may be made ~-19 u¦jof Gonductive material, and may be provided in the adapto~ for connection 20 1 thereto, such as switches to control the power from the line contacts. The 21 ¦ blades 32 and fingers 36, if conductive, may be connec-ted to external contacts 22 ¦ in the wall of the adaptor for test leads or voltage recorder leads.
23 l Since certain other changes obvious to one skilled in the art may be made ¦
24 ¦ in the device without departing from the scope of the invention, it is intended 25 l that all matter contained herein be interpreted in an illustrative and not a 26 limiting sense.
9 Various devices have been used for this purpose. Internal switches have been found too costly. Plastic sleeves have sometimes been placed over the 11 meter contact blades, and the meter re-inserted into the meter socket; however, 12 this method leaves no visual indication that the meter is disconnected. Ano-the~
13 method has involved -the use of a pair of plastic adaptors having rearwardly 14 e~tending plastic blades for insertion into the meter socket jaws, and forwardly facing slots, radially spaced from the plastic blades for receiving 16 the meter contact blades, so that the contact blades of the assembled meter 17 are insulated from the meter socket jaw contacts, and the meter is disposed at 18 an angle to its normal position, giving visual indication that the meter is 19 not connected. Such a device is shown in patent 3,61~,708 issued October 19, 1971.
21 However, such devices have found only limited usage, because of the fact 22 that they canno-t be used with all types of meters. In some types of meter E~-3 ~llS~)'76Z
1 sockets, -the rota-tion of the meter required by the adaptor causes mechanical 2 interference between portions of the meter and portions of the socket. In3 other t~pes of sockets the presence of terminal supporting crossbars prevents 4 assembly of the adaptors into the socket contacts.
Other functions of meter adaptors are to allow the use of 3 wire meters 6 on 2 wire sockets and vice versa, for connecting recording voltmeters, or to 7 provide internal switching devices for controlling the power to the circuits.
BRIBF SUMMARY OF T~E rNVENTION
8 The obJect of this invention is to provide an adaptor for assembly into 9 a meter socket, to receive a meter, said adaptor being capable of use with ei-ther a ringless or ring-type of mounting.
11 One form of the adaptor comprises a base and a forwardly e~tending 12 peripheral wall to receive the rear end of a meter.
13 The wall has peripheral flanges that allow the adaptor to be used in 14 either a ringless meter box, with means on the flange to mount the metertherein with a ring, or in a ring-type mounting, in which case the adaptor is 16 mounted onto the meter bo~ with a ring and the meter is mounted onto the adapto 17 by an additional ring. In one embodiment of the adaptor, a series of resilient ~re 18 fingersApositioned on the base to receive and resiliently grip the rearwardly 19 extending blades of a meter. The resilient fingers may be so oriented that when the meter is assembled therewithJthe meter is disposed at an angle to its 21 usual orientation. In another embodiment of the invention, the resilient 22 fingers may be so arranged in sets so that they iorm at least two blade-receivi g 23 slots, so that the meter may be assembled therein ;n one of at least two 24 orientations.
E~-3 r~e 3 . -- --According to a broad aspect of the present invention there is provided an adaptor for assembly into an electric meter socket in place of a standard watt-hour meter of the type having a peripheral mounting flange. The adaptor comprises a base having a peripheral wall. Means projects from the rear side of the base and shaped and positioned to simulate the contact blades of an electric meter for engaging the socket contacts when the adaptor is assembled into the meter socket. Means is provided on the base for receiving contact blades of an electric meter from the forward side of the base. The said wall has a first radially extending flange. The forward side of the flange is so axially positioned that when the adaptor is assembled into a meter socket, the forward side is in the same axial position as the forward face of the mounting flange of an electric meter when assembled into the socket. A second radial flange is provided on the wall forwardly of the first flange and is sized to allow the mounting thereagainst of a meter mounting flange with a U-shaped meter mounting ring.
:
-3a-~L18D'76Z
BRIEF DESCRIPTION OF TÆ FIGURES OF T~E DR~WING
1 Figure 1 is a front plan view of a meter socket adaptor embodying the 2 features of the invention.
3 Figure 2 is a view in section taken on line 2-2 of Figure 1.
I~ Figure 3 is a perspective view of the device of Figure 1 in position for assembly into a meter socket of -the ringless typeO
6 Figure ~ is a front plan view of -the assembly of Figure 3 with a meter 7 assembled therewith.
8 Figure 5 is an enlarged view in section of a portion of the assembly of 9 Fi~ure 4, taken on line 5-5 of Figure 4.
~igure 6 is a view in elevation, partly in section, of the adaptor 11 assembled with a meter and meter socket of the ring type.
DESCRIPTION OF T~E ILLUSq~Aq~ EMBODIMENT
12 Referring to Figures 1-5 of the drawing, there is illustrated one type of 13 meter socket adaptor 10, which is designed for assembly with a meter socket 12, 14 and to receive a meter 14, to enable the meter to be mounted into the socket without making electrical contact with the socket terminals.
16 ~he meter socket 12 of Figures 3-5 is a ringless type which has terminals 17 16 disposed inside a bo,~ 18. The terminals 16 arc intended to receive contact 18 ¦ blades 20 extending from the rear of the meter. The meter is normally retained 19 in place by an apertured cover 22, which bears against the meter mounting flange 24.
21 The adaptor 10 i~ preferably formed of a single piece of molded plastic, 22 and comprises a base plate 26 with a periphera] wall 28 e~tending forwardly 118~)7~iZ
1 Itherefrom forming an internal cavity 30 to receive the rear end of a meter in 2 a manner to be described.
3 ~ Formed integrally with the base and extending rearwardly therefrom are 4 blades 32, which are sized, shaped9 and positioned to simulate the contact blades 20 of the meter.
6 Projecting forwardly from the baqe are a plurality of groups 34 of resilien t 7 fingers 36. Each finger 36 is generally V-shaped with the ape~es pointing 8 ! toward a common central point, forming two intersecting slots 38 and 40.
9 The spacing of the fingers is such that the slots 38 and 40 have a width that allows them to receive and frictionally engage the contact blades 20 of 11 the meter 14.
12 I The groups 34 of fingers are preferably molded integrally with the base 26 13 land are enclosed within the peripheral wall 28, which protects them from damage¦
14 during shipment and handling.
15 l The wall 28 is provided with a radially e~tending bearing flange 42 ]6 j which ha3 a radi31 size substantially the s~e as that of the meter bearing ~ flange 24, so that the adaptor can be mounted in the bo~ 18 in the same manner 18 as a meter, as will appear hereinafter.
19 The e~treme end of the wail 28 is provided with an outwardly turned mounting flange 44. The flange 44 has an overall diameter slightly less than 21 that of the meter flange 24, to enable it to pass through the opening in the 22 box cover 22, yet is large enough to be engaged by a meter clamping ring, as 23 will appear hereinafter.
~24~ As illustrated in Figures 3 and 5, when the adaptor is used to disconnect a meter mounted in a ringless type of socket, the cover 22 of the bo~ 18 is 1~ 7~;2 1 op ~d ~nd the ~eter re~ovea. n e ~darior is then assembled into the socket by 2 inserting the blades 32 thereof into the terminals 16. The cover 22 is then ~3 closed over the adaptor~ whereby the adaptor is retained in place in the same 4 manner that a meter is retained in place, by the portion 42 of the adaptor bein~
disposed behind the periphery of the cover opening.
6 The meter 14 is then assembled with the adaptor by inserting the meter 7 blades 20 into one of the sets of adaptor slots (either 38 or 40) formed by 8 the groups 34 of fingers.
9 The meter flange thereby seats against the mounting flange 44 and may be retained in assembly by a standard ~T-shaped mounting ring 48~ which encloses 11 the meter flange 24 and the flange ~4 on the forward end of -the adap~or.
12 In view of the orientation of the slots ~ and ~, the meter, after such 13 l assembly~ will be oriented at a 45 angle to the vertical, thereby giving a 14 ¦ visual indication to service personnel that the meter i9 not connected. The 15 l fact that the meter may be mounted in the adaptor in any one of four positions 16 alio~s the position of the meter to convey information about the status of the 17 electric servioe at that location.
~;18 The adaptor may also be used to disconnect meters which are mounted on so-19 called ring type bo~es. In such installations a me-ter bo~ 50 is provided with 20 ¦ a meter aperture 52, which has a peripheral flange 54 which has an overall 21 ¦ diameter substantially equal to that of the meter flange 24. The meter is 22 ¦ retained in place by a U-shaped mounting ring 560 23 When the meter is to be disconnected, the ring 56 is removed, and the ~ 24~ adaptor 10 assembled in place of the meter (see ~igure 6). The ring 56 is then E~-3 :~L18~76Z
1 replaced so that it encloses the flange 54 of the meter boY and the bearing 2 flange 42 of the adaptor, thereby retaining the adaptor in place.
3~1 The meter may then be assembled onto the adapt~r as previously described, 4 inserting the blades 20 into a set of slots (38 or 40) of the adaptor, and assembling a second U-shaped ring 58 over the meter flange 24 and the adaptor 6 flange.
7 Although in the illustrated embodiment the slots 38 and 40 are so oriented ~8~ that a me-ter assembled into the adapt~r becomes oriented at a 45 angle to the 9 vertical, it may be desirable in some cases -to omit this feature, and provide only a single slot allowing normal orientation of the meter.
11 Instead of being -formed of a single piece of plastic, the adaptor may, if 12 desired, be made by the assembly of components of appropriate shape. In such 13 case, the blades 32 and the fingers 36 may be made of metal, provided they are 14 suitably insulated from each other.
An adaptor having the external configuration illustrated and described 16 herein~ whick alLows its use iJI eitber ring or ringless ty~e meter sockets9 may 17 have internal configuration or apparatus allowing its use for other functions.
18 ¦I For example, the rearwardly e~tending blades 32 and the fingers 36 may be made ~-19 u¦jof Gonductive material, and may be provided in the adapto~ for connection 20 1 thereto, such as switches to control the power from the line contacts. The 21 ¦ blades 32 and fingers 36, if conductive, may be connec-ted to external contacts 22 ¦ in the wall of the adaptor for test leads or voltage recorder leads.
23 l Since certain other changes obvious to one skilled in the art may be made ¦
24 ¦ in the device without departing from the scope of the invention, it is intended 25 l that all matter contained herein be interpreted in an illustrative and not a 26 limiting sense.
Claims (6)
1. An adaptor for assembly into an electric meter socket in place of a standard watt-hour meter of the type having a peripheral mounting flange, said adaptor comprising a base having a peripheral wall, means projecting from the rear side of the base shaped and positioned to simulate the contact blades of an electric meter for engaging the socket contacts when the adaptor is assembled into the meter socket, and means on the base for receiving contact blades of an electric meter from the forward side of the base, said wall having a first radially extending flange, the forward side of said flange being so axially positioned that when the adaptor is assembled into a meter socket, said forward side is in the same axial position as the forward face of the mounting flange of an electric meter when assembled into said socket, and a second radial flange on the wall forwardly of the first flange and being sized to allow the mounting thereagainst of a meter mounting flange with a U-shaped meter mounting ring.
2. An adaptor as set out in claim 1 in which said first flange comprises a radially extending portion providing said forward side and a portion extending from the outermost edge of the radially extending portion to provide spacing means when said adaptor is assembled into a meter socket of the type in which the meter is mounted with a U-shaped ring.
3. An adaptor for assembly into an electric meter socket in place of an electric meter, comprising a base and a peripheral wall on the base, said wall having mounting means for enabling assembly into a meter socket and means on the forward end thereof for enabling the mounting of an electric meter, means extending rearwardly from the base for frictional engagement in meter socket terminals, and means extending forwardly from the base for receiving and frictionally retaining the contact blades of an electric meter.
4. An adaptor as set out in claim 3 in which said means extending forwardly from the base comprises a plurality of groups of resilient fingers so arranged to form in each group a pair of intersecting slots, each of which is dimensioned to receive a meter contact blade in frictional engagement, whereby a meter may be inserted into said adaptor in more than one orientation.
5. An adaptor as set out in claim 4 in which said groups of resilient fingers are enclosed by said peripheral wall.
6. An adaptor for assembly into an electric meter socket of the residential type, in place of a standard watt-hour meter having a peripheral mounting flange, said adaptor being capable of assembly with a meter box of either the ringless mounting type or the ring mounting type, comprising a base, means extending rearwardly from the base for engaging the meter socket, and means extending forwardly from the base for receiving the contact blades of said watt-hour meter, a first radially extending member on the periphery of the base, said first radially extending member having an overall diameter, radial thickness, and axial thickness that is substantially the same as the corresponding dimensions of the peripheral mounting flange of said watt-hour meter, and a second radially extending member disposed about the base forwardly of the first member, said second radially extending member having an overall diameter and axial thickness simulating a mounting flange of a meter socket box of the type that uses a contractable ring for mounting a meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000393725A CA1180762A (en) | 1982-01-07 | 1982-01-07 | Meter disconnect adaptor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000393725A CA1180762A (en) | 1982-01-07 | 1982-01-07 | Meter disconnect adaptor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1180762A true CA1180762A (en) | 1985-01-08 |
Family
ID=4121775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000393725A Expired CA1180762A (en) | 1982-01-07 | 1982-01-07 | Meter disconnect adaptor |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1180762A (en) |
-
1982
- 1982-01-07 CA CA000393725A patent/CA1180762A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |