GB2551959A - An electrical clamp - Google Patents
An electrical clamp Download PDFInfo
- Publication number
- GB2551959A GB2551959A GB1609982.2A GB201609982A GB2551959A GB 2551959 A GB2551959 A GB 2551959A GB 201609982 A GB201609982 A GB 201609982A GB 2551959 A GB2551959 A GB 2551959A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrical
- clamp
- electrical contact
- pair
- contact elements
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/20—Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
- G01R1/22—Tong testers acting as secondary windings of current transformers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
- H01R11/22—End pieces terminating in a spring clip
- H01R11/24—End pieces terminating in a spring clip with gripping jaws, e.g. crocodile clip
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measuring Leads Or Probes (AREA)
Abstract
An electrical clamp 2 for use with electrical meters, such as resistance, current or voltage meters, the clamp comprising a pair of opposed body members 4, 6 formed of an insulating material, a pair of electrically conductive contact elements (12, 14, figure 5), which may be detachable, and a biasing element 10. Each electrical contact element is coupled to a respective one of the body members, and at least one of the electrical contact elements defines at least one open channel (34, figure 5). The opposed body members are coupled together, with each body member defining a jaw portion 16, a lever portion 20 and a pivot point 8 located between the jaw and lever portions. The biasing element 10, which may be an elasticated band, biases the opposed jaw portions to a closed configuration. Also disclosed is a clamp kit including an electrical clamp as described above and at least two pairs of detachable contact elements, allowing the user to select the contacts most appropriate for the test element.
Description
(71) Applicant(s):
Alan Lyle Purton
Helena Road, Capel-Le-Ferne, Folkestone, Kent, CT18 7LG, United Kingdom
John Henry Watson
Flat 1 Milliner House, Harrier Close, Hawkinge, Folkestone, Kent, CT18 7RT, United Kingdom (56) Documents Cited:
GB 2227615 A DE 019703898 C1 US 2658965 A1
WO 1993/001628 A1 DE 003211192 A1 US 20150311624 A1 (58) Field of Search:
INT CL G01R, H01R Other: EPODOC, WPI, TXTE (72) Inventor(s):
Alan Lyle Purton John Henry Watson (74) Agent and/or Address for Service:
Bridle Intellectual Property Limited 6F Thomas Way, Lakesview Business Park, CANTERBURY, Kent, CT3 4JZ, United Kingdom (54) Title of the Invention: An electrical clamp
Abstract Title: Electrical clamp with insulating body and detachable contacts (57) An electrical Camp 2 for use with electrical meters, such as resistance, current or voltage meters, the clamp comprising a pair of opposed body members 4, 6 formed of an insulating material, a pair of electrically conductive contact elements (12, 14, figure 5), which may be detachable, and a biasing element 10. Each electrical contact element is coupled to a respective one of the body members, and at least one of the electrical contact elements defines at least one open channel (34, figure 5). The opposed body members are coupled together, with each body member defining a jaw portion 16, a lever portion 20 and a pivot point 8 located between the jaw and lever portions. The biasing element 10, which may be an elasticated band, biases the opposed jaw portions to a closed configuration. Also disclosed is a clamp kit including an electrical clamp as described above and at least two pairs of detachable contact elements, allowing the user to select the contacts most appropriate for the test element.
At least one drawing originally filed was informal and the print reproduced here is taken from a later filed formal copy.
06 16 l/z.
06 16
An electrical clamp
The present invention relates to an electrical clamp and in particular to an electrical clamp which is configured for use with electrical meters, such as resistance meters, voltage meters and/or current meters.
Resistance meters measure the electrical resistance between two points and are often used to ensure an appropriate electrical connection between components of large systems such as cars and aircraft. Low resistance ohmmeters are typically used to measure the resistance between the points. In order to connect the low resistance ohmmeters to the test points, leads are used which connect at one end to the meter and at the other end terminate in a probe or clamp.
The use of low resistance ohmmeters with known leads is often problematic, as it is often difficult and time consuming to engage the probes or clamps at the distal ends of the leads with the test points in such a way that an accurate measurement of the resistance between the points is obtained.
It is therefore desired to provide alternative electrical clamps for use with electrical meters, such as resistance meters (i.e. ohmmeters), voltage meters and/or current meters, which address or ameliorate at least some of the problems with conventional probes and clamps.
According to a first aspect of the invention, there is provided an electrical clamp for use with electrical meters, the clamp comprising a pair of opposed body members, a pair of electrical contact elements and a biasing element; wherein each body member defines a jaw portion and each electrical contact element is coupled to the jaw portion of a respective one of the body members; the opposed body members are coupled together; the body members are formed from an electrically insulating material; the electrical contact elements are formed from an electrically conductive material; at least one of the electrical contact element defines at least one open channel; and the biasing element biases the opposed jaw portions to a closed configuration.
The skilled person will appreciate that the closed configuration of the jaw portions is an arrangement in which the jaw portions are substantially adjacent to each other, as opposed to an open configuration of the jaw portions in which the jaw portions are spaced apart from each other.
Electrical clamps according the invention may be easily secured to respective test points between which it is desired to measure electrical properties, such as resistance. In particular, in embodiments in which the test point comprises a test element in the form of a rod, bar or similar member, the test element is suitably locatable within the open channel defined by the electrical contact elements such that the electrical contact elements form a desired electrical contact with the test element. Suitably, the channel defines a greater contact area for the test element, ensures a better electrical connection and therefore results in an ability to achieve more accurate measurements.
The open channel is suitably configured such that the opposed electrical contact elements are configured to be substantially parallel to each other when the test element is located within the channel. This results in an optimum contact surface area.
The electrical meter is suitably a resistance meter.
It will be appreciated that reference herein to resistance relates to electrical resistance.
By forming the body members from an electrically insulating material, short circuits between the electrical contact elements are prevented.
Each body member suitably defines a jaw portion, a lever portion and a pivot portion. The pivot portion may be located between the jaw portion and the lever portion. In an embodiment of the invention, the opposed body members are pivotally coupled to each other.
In embodiments in which the opposed body portions define lever portions, the lever portions permit the jaw portions of the opposed body members to be urged apart to engage the electrical clamp with a test element or to release it from a test element. The biasing element urges the electrical contact elements into engagement with the test element(s) in use.
In an embodiment of the invention as defined herein, both of the electrical contact elements define at least one open channel. Suitably the or each open channel defined by one of the contact elements faces or is opposed to a corresponding open channel defined by the other of the contact elements.
For example, each electrical contact element may define opposing or facing open channels having a substantially semi-circular cross section such that a channel having a substantially circular crosssection may be formed when the electrical contact elements are located adjacent to each other. The skilled person will appreciate that the channel will never be completely closed along its longitudinal axis in use, as an incorrect reading would be obtained if the electrical contact elements were in contact when in use. Thus, there would always be a small longitudinal gap between the electrical contact elements in use and as such, the channel defined by the opposed electrical contact elements would never be completely closed along its longitudinal axis. The open channel defined by each contact element need not be semi-circular. It may have a cross-section of any geometrical shape.
Suitably, the or each channel is defined along an axis which is parallel to the longitudinal axis of the respective body member. Thus, then channel may open at the distal end of the jaw portion and extend towards the lever portion defined by the opposite end of the body member. Alternatively, the or each channel may be defined along an axis which is transverse or perpendicular to the longitudinal axis of the respective body member. In certain embodiments, each electrical contact element may define two or more channels and these may be parallel or perpendicular to each other. For example, each electrical contact element may define two or more parallel channels which extend parallel to or perpendicular to the longitudinal axis of the respective body member, or the channels may be perpendicular to each other to form open channels having a cruciform arrangement.
The different arrangements of channels defined by the electrical contact elements permits the clamp to be used with different test elements.
In an embodiment of the invention, the or each open channel defines at least one secondary feature selected from ridges, grooves and threads. Test elements with which the clamp may be used may themselves define or include surface features such as grooves, ridges or threaded portions. Accordingly, in order for the clamp to provide a desired electrical connection, the open channels defined by the respective electrical contact elements may include complementary features such that the channel may properly receive the respective test element.
The biasing element is suitably an elasticated member, such as an elasticated band. The elasticated member may be located around the jaw portions of the opposed body members in use such that the elasticated member urges the opposed jaw portions towards each other. In an embodiment of the invention, the biasing element is an elasticated band, each of the jaw portions carries a pair of outwardly projecting parallel spaced apart ribs, and the elasticated band is located between the outwardly projecting ribs of the jaw portions in use.
The use of an elasticated band as a biasing element makes the electrical clamp easier and therefore cheaper to manufacture and assembly. It is also easily replaced in the event that the band becomes weakened over time or is damaged or misplaced.
In embodiments in which the elasticated band is located between parallel spaced apart ribs, the ribs maintain the elasticated band in the desired location.
The clamps of the invention are intended to be used with resistance meters, such as low resistance ohmmeters. In order to facilitate the connection of the clamp to the meter, the clamp suitably also includes a wire electrically connected to at least one of the electrical contact elements.
It may desired to change the electrical contact elements of the clamp to electrical contact elements having a different arrangement of channels or secondary features. In certain embodiments, therefore, each electrical contact element is detachably coupled to the respective body member. The electrical contact elements may be secured to the respective body members via a releasable retainer, such as a clip or screw. In this way, a first pair of electrical contact elements may be replaced by a second pair of electrical contact elements quickly and easily and the clamp is readily adaptable for use with different test elements.
According to a second aspect of the invention, there is provided a kit comprising a pair of electrical clamps as defined anywhere herein.
According to a third aspect of the invention, there is provided a second kit comprising an electrical clamp for use with electrical meters, such as resistance meters, and at least two pairs of electrical contact elements, wherein the clamp comprises a pair of opposed body members and a biasing element; the opposed body members are coupled together; each body member defines a jaw portion; the body members are formed from an insulating material; and the biasing element biases the opposed jaw portions to a closed configuration; and wherein each pair of electrical contact elements are formed from an electrically conductive material; each one of a pair of the electrical contact element is capable of being detachably coupled to a jaw portion of a respective one of the body members; at least one of the pair of electrical contact element defines at least one open channel; and the channels defined by each pair of electrical contact elements are the same or different.
Thus, the kit according to the third aspect of the invention allows a user to select the most appropriate pair of contact elements based on the corresponding test element, and to secure the selected pair of contact elements to the respective body members to ensure a suitable electrical connection between the contact elements and the test element.
Each pair of electrical contact elements may be as described above in connection with the first aspect of the invention. Accordingly, both of the electrical contact elements of each pair of elements may define at least one open channel; the channels defined by each pair of electrical contact elements may extend parallel to or perpendicular to the longitudinal axis of the respective body member; the or each open channel defined by one of a pair of the electrical contact elements may be arranged to face a corresponding open channel defined by the other of the pair of electrical contact elements, such that when the pair of electrical contact elements are arranged adjacent to each other, the opposed open channels form one or more closed channels; and each open channel may define at least one secondary feature selected from ridges, grooves and threads.
Similarly, each of the opposed body members may be as described hereinabove in connection with the first aspect of the invention. Thus, each body member suitably defines a jaw portion, a lever portion and a pivot portion. The pivot portion may be located between the jaw portion and the lever portion. In an embodiment of the invention, the opposed body members are pivotally coupled to each other.
Furthermore, the biasing element of the second aspect of the invention may be as defined hereinabove in connection with the first aspect of the invention. Thus, the biasing element of the second aspect of the invention may be an elasticated band. The elasticated band may be located around the jaw portions of the opposed body members in use such that the elasticated band urges the opposed jaw portions towards each other. In an embodiment of the second aspect of the invention, the biasing element is an elasticated band, each of the jaw portions carries a pair of outwardly projecting parallel spaced apart ribs, and the elasticated band is located between the outwardly projecting ribs of the jaw portions in use.
The kit according to the third aspect of the invention may comprise a pair of clamps, wherein each clamp may include at least two pairs of electrical contact elements.
According to a fourth aspect of the invention, there is provided an electrical meter including an electrical clamp according to the first aspect of the invention in any of its embodiments as described hereinabove, a kit according to the second aspect of the invention in any of its embodiments as described hereinabove, or a second kit according to the third aspect of the invention as defined and described hereinabove; and one or more wires to electrically connect the or each clamp to the meter, wherein the meter is configured to measure an electrical property between the clamp and a reference or between two clamps.
The electrical meter may be a resistance meter, a voltage meter and/or a current meter. Accordingly, the measured property may be resistance, voltage or current between the test elements. In an embodiment of the invention, the meter is an electrical resistance meter, suitably a low resistance ohmmeter.
The skilled person will appreciate that the features described and defined in connection with the aspects of the invention and the embodiments thereof may be combined in any combination, regardless of whether the specific combination is expressly mentioned herein. Thus, combinations of optional features described and discussed herein are within the scope of the invention.
An embodiment of the invention will now be described, by way of example only, with reference to the accompanying drawings in which:
Figure 1 is a side elevational view of an electrical clamp according to a first embodiment of the invention;
Figure 2 is a plan view from above of the upper body member of the electrical clamp shown in Figure 1;
Figure 3 is a side elevational view of the upper body member shown in Figure 2;
Figure 4 is a plan view from below of the upper body member shown in Figure 2; and Figure 5 is a perspective view of a pair of electrical contact elements which form part of the electrical clamp shown in Figure 1.
For the avoidance of doubt, the skilled person will appreciate that in this specification, the terms up, down, front, rear, upper, lower, width, above, below, etc. refer to the orientation of the components of the invention when installed for normal use as shown in the Figures.
Figure 1 shows an electrical clamp 2 in accordance with the first aspect of the invention. The clamp 2 comprises an upper body member 4, a lower body member 6, a pivot element 8 and a biasing element 10 in the form of an elasticated band formed from an elastomer. The clamp 2 further includes a pair of electrical contact elements 12, 14 which are shown in more detail in Figure 5.
As can be seen from Figure 1, each of the body members defines a jaw portion 16, a pivot portion 18 and a lever portion 20, each arranged such that the pivot portion 18 is located between the jaw portion 16 and the lever portion 20. The pivot element 8 is positioned within a transverse channel defined by the opposed pivot portions 18.
The biasing element 10 forms a tight fit around the jaw portions 16 such that in the absence of any force applied to the lever portions 20, the jaw portions are urged towards each other by the restoration force of the biasing element 10.
Figure 2 shows a plan view from above of the upper body member 4 with the biasing element 10 removed for clarity. In this view, it can be seen that the jaw portion 16 of the upper body 4 defines a pair of parallel transvers ribs 22, 24. The parallel ribs 22, 24 define therebetween a gap within which the biasing element 10 fits, such that the ribs 22, 24 prevent undesired longitudinal movement of the biasing element 10 relative to the jaw portion 16 of the upper body member 4.
A countersunk bore 26 is formed through the jaw portion 16 of the upper body member 4, which is seen in more detail in Figure 3. The bore is configured to receive therein the threaded body of a screw fixing (not shown) and the countersunk portion is configured to receive the head of the screw fixing such that the head lies substantially flush to the surface of the upper body member in use.
Figure 4 shows a bottom view of the upper body member 4. A pair of parallel, transverse, inwardly projecting ribs 28, 30 are defined by the jaw portion 16 of the upper body member 4. The inwardly projecting ribs 28, 30 underlie the corresponding outwardly projecting ribs 22, 24. The gap defined between the inwardly projecting ribs 28, 30 is configured to receive therein a respective one of the pair of electrical contact elements 12,14, which are detachably secured to the upper body member 4 by the screw fixing in use.
The lower body member 6 is identical to and a mirror image of the upper body member 4. Thus, the lower body member 6 includes all of the features described above in connection with the upper body member 4.
Figure 5 shows the pair of electrical contact elements 12, 14. Each of the electrical contact elements 12, 14 has a substantially semi-cylindrical body 32 which defines therein a longitudinal channel 34. The longitudinal channel 34 defines therein a number of grooves 36 which together form half of a helical arrangement, such that when the electrical contact elements 12,14 are adjacent to each other and the channels 34 are facing each other, the grooves 36 form a helical arrangement which is adapted to receive therein a threaded portion of the test element.
An outer portion of each electrical contact element 12, 14 defines a threaded bore 38 configured to receive therein the retaining screw fixing, which is used to releasably secure each of the electrical contact elements 12,14 to a respective one of the body members 4, 6.
An electrical wire (not shown) is connected to each of the electrical contact elements 12,14 in order to electrically connect the clamp to a low resistance ohmmeter (not shown).
Claims (20)
1. An electrical clamp for use with electrical meters, the clamp comprising a pair of opposed body members, a pair of electrical contact elements and a biasing element; wherein each body member defines a jaw portion and each electrical contact element is coupled to the jaw portion of a respective one of the body members; the opposed body members are coupled together; the body members are formed from an electrically insulating material; the electrical contact elements are formed from an electrically conductive material; at least one of the electrical contact element defines at least one open channel; and the biasing element biases the opposed jaw portions to a closed configuration.
2. An electrical clamp according to Claim 1, wherein the opposed body members each define a jaw portion, and a lever portion.
3. An electrical clamp according to Claim 1 or Claim 2, wherein the opposed body members are pivotally coupled to each other.
4. An electrical clamp according to Claim 3, wherein the opposed body members each define a jaw portion, a lever portion and a pivot portion located between the jaw portion and the lever portion.
5. An electrical clamp according to any of Claims 1 to 4, wherein both of the electrical contact elements define at least one open channel.
6. An electrical clamp according to any of Claims 1 to 5, wherein the or each channel is defined along an axis which is parallel to the longitudinal axis of the respective body member.
7. An electrical clamp according to any of Claims 1 to 5, wherein the or each channel is defined along an axis which is perpendicular to the longitudinal axis of the respective body member.
8. An electrical clamp according to any of Claims 2 to 7, wherein the or each open channel defined by one of the electrical contact elements is arranged to face a corresponding open channel defined by the other electrical contact element, such that when the electrical contact elements are arranged adjacent to each other, the opposed open channels form one or more channels which are substantially closed along their longitudinal axis.
9. An electrical clamp according to any of Claims 1 to 8, wherein the or each open channel defines at least one secondary feature selected from ridges, grooves and threads.
10. An electrical clamp according to any of Claims 1 to 9, wherein the biasing element is an elasticated band, each of the jaw portions carries a pair of outwardly projecting parallel spaced apart ribs, and the elasticated band is located between the outwardly projecting ribs of the jaw portions in use.
11. An electrical clamp according to any of Claims 1 to 10, wherein each electrical contact element is detachably coupled to the respective body member.
12. An electrical clamp according to any of Claims 1 to 11, further including a wire electrically connected to at least one of the electrical contact elements.
13. A kit comprising a pair of electrical clamps according to any of Claims 1 to 12
14. A clamp kit comprising an electrical clamp for use with electrical meters and at least two pairs of electrical contact elements, wherein the clamp comprises a pair of opposed body members and a biasing element; the opposed body members are coupled together; each body member defines a jaw portion; the body members are formed from an insulating material; and the biasing element biases the opposed jaw portions to a closed configuration; and wherein each pair of electrical contact elements are formed from an electrically conductive material; each one of a pair of the electrical contact element is capable of being detachably coupled to a jaw portion of a respective one of the body members; at least one of the pair of electrical contact element defines at least one open channel; and the channels defined by each pair of electrical contact elements are the same or different.
15. A clamp kit according to Claim 14, wherein both of the electrical contact elements of each pair of elements define at least one open channel.
16. A clamp kit according to Claim 14 or Claim 15, wherein the channels defined by each pair of electrical contact elements extend parallel to or perpendicular to the longitudinal axis of the respective body member.
17. A clamp kit according to any of Claims 14 to 16, wherein the or each open channel defined by one of a pair of the electrical contact elements is arranged to face a corresponding open channel defined by the other of the pair of electrical contact elements, such that when the pair of electrical contact elements are arranged adjacent to each other, the opposed open channels form one or more closed channels.
18. A clamp kit according to any of Claims 14 to 17, wherein each open channel defines at least one secondary feature selected from ridges, grooves and threads.
19. A clamp kit according to any of Claims 14 to 18, wherein the biasing element is an elasticated band, each of the jaw portions carries a pair of outwardly projecting parallel spaced apart ribs, and the elasticated band is located between the outwardly projecting ribs of the jaw portions in use.
20. An electrical meter including an electrical clamp according to any of Claims 1 to 12, a kit according to Claim 13 or a clamp kit according to any of Claims 14 to 19; and one or more wires to electrically connect the or each clamp to the meter, wherein the meter is configured to measure one or more electrical properties between the clamp and a reference or between a two clamps.
Intellectual
Property
Office
GB1609982.2
1-20
Application No: Claims searched:
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1609982.2A GB2551959A (en) | 2016-06-08 | 2016-06-08 | An electrical clamp |
| PCT/GB2017/051655 WO2017212266A1 (en) | 2016-06-08 | 2017-06-07 | An electrical clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1609982.2A GB2551959A (en) | 2016-06-08 | 2016-06-08 | An electrical clamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201609982D0 GB201609982D0 (en) | 2016-07-20 |
| GB2551959A true GB2551959A (en) | 2018-01-10 |
Family
ID=56508237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1609982.2A Withdrawn GB2551959A (en) | 2016-06-08 | 2016-06-08 | An electrical clamp |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2551959A (en) |
| WO (1) | WO2017212266A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794359B (en) * | 2018-08-02 | 2021-06-04 | 河南许继仪表有限公司 | Clamping detection device for electric energy meter |
| CN111896779B (en) * | 2020-07-21 | 2022-10-18 | 贵州电网有限责任公司 | Voltage caliper of metering and detecting instrument |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2658965A (en) * | 1950-12-14 | 1953-11-10 | Delbert F Smith | Connector clip |
| DE3211192A1 (en) * | 1982-03-26 | 1983-10-06 | Nicolay Gmbh | Method for producing a contact terminal, and a contact terminal produced using said method |
| GB2227615A (en) * | 1988-09-30 | 1990-08-01 | Nico | Electrical connector clip |
| WO1993001628A1 (en) * | 1991-07-04 | 1993-01-21 | Verge Cyril | Booster cable assembly |
| DE19703898C1 (en) * | 1997-02-03 | 1998-04-09 | Herbert Amrhein | Electrical resistance measurement tongs e.g. for heavy current cable |
| US20150311624A1 (en) * | 2014-04-15 | 2015-10-29 | Miriam Keil | Connection of an Electrocardiogram Electrode to a Data Acquisition and/or Transfer Facility |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3025743A1 (en) * | 1980-07-08 | 1982-02-04 | Robert Bosch Gmbh, 7000 Stuttgart | CAPACITIVE PULSE |
| US4378525A (en) * | 1980-09-18 | 1983-03-29 | Burdick Neal M | Method and apparatus for measuring a DC current in a wire without making a direct connection to the wire |
| KR100529143B1 (en) * | 2001-05-25 | 2005-11-15 | 한국전력공사 | Remote ground resistance automatic measuring tester using magnetic field detecting apparatus |
| EP2160804B1 (en) * | 2007-05-18 | 2012-12-19 | Rishabh Instruments Private Limited | Clamp meter with rotary mechanism for clamp jaws |
| JP6242265B2 (en) * | 2014-03-27 | 2017-12-06 | 日置電機株式会社 | Clamp sensor and measuring device |
-
2016
- 2016-06-08 GB GB1609982.2A patent/GB2551959A/en not_active Withdrawn
-
2017
- 2017-06-07 WO PCT/GB2017/051655 patent/WO2017212266A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2658965A (en) * | 1950-12-14 | 1953-11-10 | Delbert F Smith | Connector clip |
| DE3211192A1 (en) * | 1982-03-26 | 1983-10-06 | Nicolay Gmbh | Method for producing a contact terminal, and a contact terminal produced using said method |
| GB2227615A (en) * | 1988-09-30 | 1990-08-01 | Nico | Electrical connector clip |
| WO1993001628A1 (en) * | 1991-07-04 | 1993-01-21 | Verge Cyril | Booster cable assembly |
| DE19703898C1 (en) * | 1997-02-03 | 1998-04-09 | Herbert Amrhein | Electrical resistance measurement tongs e.g. for heavy current cable |
| US20150311624A1 (en) * | 2014-04-15 | 2015-10-29 | Miriam Keil | Connection of an Electrocardiogram Electrode to a Data Acquisition and/or Transfer Facility |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201609982D0 (en) | 2016-07-20 |
| WO2017212266A1 (en) | 2017-12-14 |
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