US2831174A - Electric test prod - Google Patents

Electric test prod Download PDF

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Publication number
US2831174A
US2831174A US604018A US60401856A US2831174A US 2831174 A US2831174 A US 2831174A US 604018 A US604018 A US 604018A US 60401856 A US60401856 A US 60401856A US 2831174 A US2831174 A US 2831174A
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United States
Prior art keywords
body
sleeve
spring
end
electric test
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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 - Lifetime
Application number
US604018A
Inventor
Oscar M Hilmo
Original Assignee
Oscar M Hilmo
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Filing date
Publication date
Application filed by Oscar M Hilmo filed Critical Oscar M Hilmo
Priority to US604018A priority Critical patent/US2831174A/en
Application granted granted Critical
Publication of US2831174A publication Critical patent/US2831174A/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00Individual 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
    • H01R11/11End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/22End pieces terminating in a spring clip
    • H01R11/24End pieces terminating in a spring clip with gripping jaws, e.g. crocodile clip

Description

April 15, 1958 Osanw JTZfiZZmo INVENTOR I I BY 7 a I ATTORNEYS United States Patent ELECTRIC TEST PROD Oscar M. Hilmo, Phoenix, Ariz.

Application August 14, 1956, Serial No. 604,018

1 Claim. (Cl. 339-108) This invention relates to an emergency or temporary connection for electrical circuits.

An object of this invention is to provide a feeler or prod for testing electric circuits or forming a temporary connection, the device being formed of insulated material so as to protect the user.

Another object of this invention is to provide a feeler or prod for testing electric circuits or producing a temporary connection which includes a pair of springpressed clamping jaws which are constantly urged to released position, with an insulated shell or housing about the jaws and including spring-pressed means to normally urge the jaws to closed position.

A further object of this invention is to provide a feeler or prod which will give the maximum protection to the user, and which is of simple construction so that it can be manufactured at small cost and will withstand hard usage.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts, hereinafter more fully described and pointed out in the claim, it being understood that changes may be made in the construction and arrangement of parts Without departing from the spirit of the invention as claimed.

Referring to the drawings:

Figure 1 is a detail side elevation of a connector constructed according to an embodiment of this invention, showing the contact members in concealed position.

Fig. 2 is a longitudinal section through the device showing the contact members or prongs in operative position.

Fig. 3 is a transverse sectional view taken on line 3-3 of Fig. 2.

Fig. 4 is a detail side elevation of the prongs or contact members with the slide extending from the rear end thereof.

Referring to the drawings, the numeral designates generally a cylindrical body or housing which is formed of electric insulating material. The body 10 has a rear wall 11 which is formed with a central opening 13 and the rear wall 11 projects from the outer surface of the body 10 so as to form an annular flange 12.

The slide member generally indicated at 14 is slidably mounted within the body or housing 10 and includes a round body 15 having an annular flange 16 at the forward end thereof which slidably engages the inner cylindrical surface of the housing 10. The body 15 has projecting from the forward end thereof a pair of ears 17 and the rear or inner ends of a pair of contact members 18 are pivotally mounted between the cars 17. These contact members form clamping or gripping elements and each member 18 is formed of an elongated straight bar 20 which terminates at its outer or forward end in 2,831,174 Patented Apr. 15, 1958 a curved article-gripping jaw or contact member 21. A spring 22 constantly urges the two contact members 18 apart or to an inoperative position. The slide member 14 is provided at its rear with a threaded stud 23 about which the forward end of a cylindrical sleeve 24 is threadedly mounted. The sleeve 24 is also formed of insulating material and the sleeve 24 is formed of a longitudinal bore 25 through which a conductor 26 is adapted to loosely engage. The stud 23 has extending rearwardly therefrom a reduced diameter shank 27 having a central bore 28 within which the bared wire 29 is adapted to be extended. The wire 29 is secured in the bore 28 by means of a set screw 30. The sleeve 24 is provided with an annular flange or head 31 at the rear end thereof and a spring 32 engages about the sleeve 24 and bears at its forward end against the wall 11 and bears at its rear end against the head 31 so as to constantly urge the sleeve 24 rearwardly. Rearward movement of the sleeve 24 under the tension of spring 32 will move slide 14 rearwardly and draw the clamping members or contact members 18 inwardly of the cylindrical body 10. As the contact members 18 are drawn into the interior of the body 15 these contact members 18 will be moved toward each other so as to thereby firmly grip a part 33 therebetween. This part 33 may be one portion of an electric circuit which is being tested or with which the connector is adapted to be temporarily connected.

In the use and operation of this device the conductor 26 is stripped of insulation at one end and the wire 29 which is thereby bared is inserted in the bars 28 and secured by the set screw 30. The unit comprising the body 10 and the spring-pressed sleeve 24 may then be held in one hand, preferably with one hand engaging about the body 10 and the other hand pressing the sleeve 24 inwardly of the body 10 so that the clamping members or bars 18 will be projected from the forward end of the body 10 and will be opened or separated by the spring 22. Release of the spring-pressed sleeve 24 will move slide 14 inwardly or to the left as viewed in Fig. 2 and as slide 14 moves inwardly the bars or gripping members 18 will be moved toward each other so as to thereby grip the elements 33. This connection will provide a means for connecting an emergency line to an electric circuit or for repairing an electric circuit under emergency conditions.

What is claimed is:

An electrical connector comprising a round body having a threaded end, an annular flange at the other end of said body, a pair of longitudinally inwardly bent contact arms pivotally carried by and extending from one end of said body, a leaf spring constantly urging said arms apart, a cylindrical dielectric arm contacting member loose about said body and flange, a rear end wall fixed to said member having an opening through which said body slidably engages, means securing one end of a conductor to the rear end of said body, a dielectric sleeve threaded to the threaded end of said body and slidably engaging through said opening, an annular flange at the rear end of said sleeve, and a spring about said sleeve between said flange and said end wall to normally urge said body rearwardly.

US604018A 1956-08-14 1956-08-14 Electric test prod Expired - Lifetime US2831174A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US604018A US2831174A (en) 1956-08-14 1956-08-14 Electric test prod

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US604018A US2831174A (en) 1956-08-14 1956-08-14 Electric test prod

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US2831174A true US2831174A (en) 1958-04-15

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Family Applications (1)

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3120227A (en) * 1960-07-08 1964-02-04 Jr Charles A Hunter Method for obtaining a fetal electrocardiogram
US3182257A (en) * 1961-05-18 1965-05-04 Motorola Inc Electronic test probe
US3844292A (en) * 1972-06-09 1974-10-29 Medtronic Inc Intravascular lead assembly
US3934589A (en) * 1973-05-26 1976-01-27 Dragerwerk Aktiengesellschaft Surgical instrument for sterilizing women by ligature of tubes
US3938527A (en) * 1973-07-04 1976-02-17 Centre De Recherche Industrielle De Quebec Instrument for laparoscopic tubal cauterization
US3974834A (en) * 1975-04-23 1976-08-17 Medtronic, Inc. Body-implantable lead
US4011875A (en) * 1973-02-27 1977-03-15 Lehr Siegfried R Medical electrodes
US4254764A (en) * 1979-03-01 1981-03-10 Neward Theodore C Clip electrode
US4332257A (en) * 1980-02-11 1982-06-01 Bunker Ramo Corporation Medical clip and electrode constructions
US4390233A (en) * 1981-04-21 1983-06-28 Sanders Jr David E B Battery cable connector
US4612936A (en) * 1984-04-12 1986-09-23 Fukuda Denshi Co., Ltd. Clip-type electrode for electrocardiographs
EP0268364A2 (en) * 1986-11-14 1988-05-25 Minnesota Mining And Manufacturing Company Electrical connector
US4781197A (en) * 1984-04-12 1988-11-01 Fukuda Denshi Co., Ltd. Clip type electrode for electrocardiographs
WO1994005215A1 (en) * 1992-09-03 1994-03-17 Minnesota Scientific, Inc. Laparoscope holder
US6193672B1 (en) 1993-05-11 2001-02-27 Mectra Labs, Inc. Lavage
US20070010848A1 (en) * 2005-07-11 2007-01-11 Andrea Leung Systems and methods for providing cavities in interior body regions
US10072685B2 (en) * 2016-02-12 2018-09-11 Scott Boerman Clip holding and release device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1633237A (en) * 1923-02-07 1927-06-21 James G Whitlow Valve-pin extractor
GB748811A (en) * 1953-12-08 1956-05-09 Albert Henry Saunders Improvements in electrical test probes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1633237A (en) * 1923-02-07 1927-06-21 James G Whitlow Valve-pin extractor
GB748811A (en) * 1953-12-08 1956-05-09 Albert Henry Saunders Improvements in electrical test probes

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3120227A (en) * 1960-07-08 1964-02-04 Jr Charles A Hunter Method for obtaining a fetal electrocardiogram
US3182257A (en) * 1961-05-18 1965-05-04 Motorola Inc Electronic test probe
US3844292A (en) * 1972-06-09 1974-10-29 Medtronic Inc Intravascular lead assembly
US4011875A (en) * 1973-02-27 1977-03-15 Lehr Siegfried R Medical electrodes
US3934589A (en) * 1973-05-26 1976-01-27 Dragerwerk Aktiengesellschaft Surgical instrument for sterilizing women by ligature of tubes
US3938527A (en) * 1973-07-04 1976-02-17 Centre De Recherche Industrielle De Quebec Instrument for laparoscopic tubal cauterization
US3974834A (en) * 1975-04-23 1976-08-17 Medtronic, Inc. Body-implantable lead
US4254764A (en) * 1979-03-01 1981-03-10 Neward Theodore C Clip electrode
US4332257A (en) * 1980-02-11 1982-06-01 Bunker Ramo Corporation Medical clip and electrode constructions
US4390233A (en) * 1981-04-21 1983-06-28 Sanders Jr David E B Battery cable connector
US4612936A (en) * 1984-04-12 1986-09-23 Fukuda Denshi Co., Ltd. Clip-type electrode for electrocardiographs
US4781197A (en) * 1984-04-12 1988-11-01 Fukuda Denshi Co., Ltd. Clip type electrode for electrocardiographs
EP0268364A2 (en) * 1986-11-14 1988-05-25 Minnesota Mining And Manufacturing Company Electrical connector
EP0268364A3 (en) * 1986-11-14 1989-07-12 Minnesota Mining And Manufacturing Company Electrical connector
WO1994005215A1 (en) * 1992-09-03 1994-03-17 Minnesota Scientific, Inc. Laparoscope holder
US5380338A (en) * 1992-09-03 1995-01-10 Minnesota Scientific, Inc. Laparoscope holder with rotatable gripping pads
US6193672B1 (en) 1993-05-11 2001-02-27 Mectra Labs, Inc. Lavage
US20070010848A1 (en) * 2005-07-11 2007-01-11 Andrea Leung Systems and methods for providing cavities in interior body regions
US10072685B2 (en) * 2016-02-12 2018-09-11 Scott Boerman Clip holding and release device

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