Spring devices – Coil – Irregular
Patent
1993-08-24
1994-11-01
Oberleitner, Robert J.
Spring devices
Coil
Irregular
267169, F16F 106
Patent
active
053602110
ABSTRACT:
This is an all-plastic protective sleeve for the needle of a medical device. It comprises, a plastic base carrying a bottom end of the needle; a plastic end-cap slidably mounted on the needle adjacent a tip end thereof; a plurality of longitudinal plastic slats extending from the base to the end-cap; a cylindrical plastic locking collar disposed over the plurality of longitudinal slats adjacent the end-cap; and, a plastic spring disposed over the plurality of longitudinal slats between the base and the end-cap. The spring is a unitary plastic helical compression spring comprising a cylindrical collar portion disposed over a center portion of the plurality of longitudinal slats with first and second portions of helical compression spring turns extending therefrom toward the base and the locking collar, respectively. The locking collar has an outside diameter larger than the outside diameter of the spring and is of a thickness sufficient to produce a textured grippable area at the periphery thereof.
REFERENCES:
patent: 1432604 (1922-10-01), Lang
patent: 2033035 (1936-03-01), Koons
patent: 2118150 (1938-05-01), Brinkley
patent: 3340965 (1967-09-01), Ellis, Jr.
patent: 4869471 (1989-09-01), Schwarz et al.
Ohnemus Randall E.
Smith Craig W.
InjectiMed, Inc.
Oberleitner Robert J.
Streck Donald A.
Young Lee W.
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