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US 4,302,982 AGranted
Key and keyway arrangement
AssigneeBell Telephone Laboratories, Incorporated
InventorRalph D'Angelo
Life of this patent
Estimating the term…
Abstract
The present invention relates to a key and keyway arrangement comprising a first slotted member (14) and a second support member (20) including a "U"-shaped wire guide (10) positioned in a manner whereby the ends thereof are fitted into a pair of spaced-apart apertures in the surface of the second member. The members are placed in relative position to each other so as to allow the curved section of the wire guide to protrude into the slot of the first member, forming a tangential relation therewith.
Claims2
A key and keyway arrangement comprising:
- a first member (14) including a longitudinal keyway (12), and
- a second member (20) positioned adjacent to said keyway in said first member
- characterized in that
- the second member includes a pair of spaced-apart apertures (16,18) aligned with the keyway in the first member, and
- the arrangement further comprises a curved wire key (10) including a pair of straight end sections (11,13), each end section disposed in a separate one of said spaced-apart apertures included in said second member, said wire protruding therefrom into the keyway of the first member in a tangential relation therewith.
2 more elements
Dependencies are inferred from the claim text.