US2788505A - Devices for fastening electric cables - Google Patents

Devices for fastening electric cables Download PDF

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Publication number
US2788505A
US2788505A US511345A US51134555A US2788505A US 2788505 A US2788505 A US 2788505A US 511345 A US511345 A US 511345A US 51134555 A US51134555 A US 51134555A US 2788505 A US2788505 A US 2788505A
Authority
US
United States
Prior art keywords
cap
devices
cable
electric cables
cone
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 - Lifetime
Application number
US511345A
Other languages
English (en)
Inventor
Jules P Camzi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US2788505A publication Critical patent/US2788505A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/50—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw
    • H01R4/52—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw which is spring loaded

Definitions

  • the clamping device forming the subject of the present invention obviates these disadvantages, by providing an efiective connection which cannot become undone accidentally, with the aid of simple and inexpensive elements.
  • Figures 1 to 4 are profile views of the elements constituting the clamping device
  • Figure 5 shows an assembly, with sections, of said elements
  • Figure 6 shows a general view of a plug, the pins of which are provided with the clamping device.
  • the clamping device is constituted by the contact element 1 which in the case described is a pin, a cap 2, and a spring 3.
  • the pin 1 has a collar 4 and a cone 5, which is surmounted by a cylindrical part 7 pierced by a hole 6.
  • the cap 2 is hollowed conically, the hollow cone being followed by a hollow cylindrical part, as shown in broken lines in Figure 2, and has a shoulder 8 intended to engage in the spring 3.
  • Figure 5 shows the assembly of the different elements of the device: the bated end 9 of the conductor cable is threaded into the hole 6, first passing through the spring 3 and the cap 2 and then being brought back into said cap 2.
  • the insulating casing of the contact element has cavities in which the collar 4 and the cap 2 are housed, together with the spring 3, said collar and said spring bearing against the walls of the casing, whereby the spring is maintained under tension and applies the cap 2 against the wire and the latter against the cone, thus ensuring contact under constant pressure.
  • Figure 6 illustrates the whole arrangement comprising an open two-pin plug, in which the insulating casing is of the usual type of plastic material, constituted by two symmetrical halves.
  • the contact element could contain an elbow bend.
  • the device In the case of a female plug, containing sockets instead of the pins, the device would be identical and be applied to the bottom part of the sockets.
  • the device of the present invention avoids this risk, since on the contrary traction on the cable tends to increase the pressure of the cap against the cable bearing against the cone and, consequently, to increase the clamping effect as the pull is increased.
  • the contact elements are very easily positioned in the cavities provided in the casings, the pressure of the spring 3 maintaining said elements in the position in which they have been placed, thus enabling the insulating casings to be easily closed.
  • the spring 3 could be replaced by a flexible member of rubber, for example.
  • the conical clamping walls could be replaced by inclined plane walls.
  • an electrical appliance having a contact element, a cable and means for clamping one end of the cable to the contact element, said means comprising a coneshaped projection on one end of the contact element, an aperture piercing said element transversely above said cone-shaped projection for receiving one end of the cable, whereby said cable end may engage one side of the coneshaped projection, pass through the aperture and thereafter engage the opposite side of the cone-shaped projection, a conically hollowed cap movably engaging the cable and the cone-shaped projection of the contact element, and a resilient member surrounding: the cable and having one end thereof engaging the cap for pressing the cap against the cone-shaped projection to tightly hold the cable between the conical surfaces of said cap and contact element.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Cable Accessories (AREA)
US511345A 1954-06-15 1955-05-26 Devices for fastening electric cables Expired - Lifetime US2788505A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH784003X 1954-06-15

Publications (1)

Publication Number Publication Date
US2788505A true US2788505A (en) 1957-04-09

Family

ID=4536437

Family Applications (1)

Application Number Title Priority Date Filing Date
US511345A Expired - Lifetime US2788505A (en) 1954-06-15 1955-05-26 Devices for fastening electric cables

Country Status (6)

Country Link
US (1) US2788505A (enrdf_load_stackoverflow)
BE (1) BE538309A (enrdf_load_stackoverflow)
CH (1) CH314766A (enrdf_load_stackoverflow)
DE (1) DE1002432B (enrdf_load_stackoverflow)
FR (1) FR1124822A (enrdf_load_stackoverflow)
GB (1) GB784003A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4397518A (en) * 1980-12-19 1983-08-09 Tsai Jing Hwang Push-type wire terminating apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1216911A (en) * 1981-03-13 1987-01-20 Francis Vause Electrical connectors

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR25906E (fr) * 1921-12-29 1923-06-22 Perfectionnements aux connexions des canalisations électriques
FR971100A (fr) * 1946-04-24 1951-01-12 Dispositif de connexion séparable pour conducteurs électriques
US2714197A (en) * 1952-03-01 1955-07-26 Stromberg Carlson Co Electrical connectors

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR25906E (fr) * 1921-12-29 1923-06-22 Perfectionnements aux connexions des canalisations électriques
FR971100A (fr) * 1946-04-24 1951-01-12 Dispositif de connexion séparable pour conducteurs électriques
US2714197A (en) * 1952-03-01 1955-07-26 Stromberg Carlson Co Electrical connectors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4397518A (en) * 1980-12-19 1983-08-09 Tsai Jing Hwang Push-type wire terminating apparatus

Also Published As

Publication number Publication date
GB784003A (en) 1957-10-02
BE538309A (enrdf_load_stackoverflow)
FR1124822A (fr) 1956-10-18
CH314766A (fr) 1956-06-30
DE1002432B (de) 1957-02-14

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