Jointing members and joints

Details Jointing members and joints Jointing members and joints

1977-11-29

1979-01-23

Lake, Roy

Geometrical instruments

174 99E, 191 25, 191 441, 339 22B, 339255L, H01R 3900

Patent

active

041357744

ABSTRACT:
An electrical joint which is capable, while carrying current, of simultaneous vertical and horizontal articulation as well as extension or retraction in the longitudinal direction comprises in combination a pair of electrical conductors for supplying electrical energy to mine equipment, each of said conductors having a square C cross section defined by a rear wall, a pair of upstanding ends formed, respectively, on opposite edges of said rear wall, and a pair of inturned lips formed, respectively, on said upstanding ends; a unitary jointing member having an I cross-section defined by first and second parallel cheeks interconnected by a central stem portion; said jointing member being mutully engaged with said conductors with said first cheek being located within said conductors, with said first cheek having a dimension, in its direction of parallelism, such that there is established an articulation space beyond opposite ends of said first cheek, and with said stem portion extending outwardly between the inturned lips of said conductors; and at least one resilient, electrically conductive member interposed between said jointing member and the rear walls of said conductors; the length of the stem portion of said jointing member being greater than the thickness of the lips to establish a further articulation space between the inturned lips of said conductors and the second cheek of said jointing member.

REFERENCES:
patent: 2933567 (1960-04-01), Mageoch
patent: 3077512 (1963-02-01), Frostick
patent: 3341670 (1967-09-01), Martin et al.
patent: 3605064 (1971-09-01), Routh
patent: 4018497 (1977-04-01), Bulanchuk
patent: 4067257 (1978-01-01), Pentith

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