US3238784A - Hooded seeding and sampling needle - Google Patents

Description

March 8, 1966 w, G, DQRSEY ETAL 3,238,784

HOODED SEEDING AND SAMPLING NEEDLE Filed Jan. '7, 1964 l@ 1 a.gg 4;

United States Patent O HOODED SEEDING AND SAMPLING NEEDLE Warren G. Dorsey, Robert L. Willard, and Lord D.

Nickens, Frederick County, Md., assignors to the United States f America as represented by the Secretary of the Army Filed Jan. 7, 1964, Ser. No. 336,323 2 Claims. (Cl. 73-425) (Granted underTitle 35, U.S. Code (1952), sec. 266) The invention described herein may be manufactured and used by or for the Government for governmental purposes, without the payment to us of any royalty thereon.

The present invention relates to needle-type apparatus for removably connecting one uid container to another, or for connecting a tube to a container, or for similar applications. Such apparatus should be kept clean and germ-free, the needle should be protected when not in use, and germs or bacteria being transferred by the apparatus should not be permitted to escape or become contaminated by other germs or bacteria. The present invention is intended to improve such apparatus.

In the drawing:

FIG. 1 is a cross-section of the apparatus;

FIG. 2 is a cross-section of a cooperating connecting device;

FIG. 3 is a modification of the apparatus of FIG. 1.

In FIG. 1 anouter housing member 10 is telescopically associated withinner housing member 12 and has ahollow needle 14 rigidly connected thereto.

Inner housing 12 is detachably connected to the wall of atank 20, or such, by use of bushing 16 threadedly engagingupstanding collar 18.

Resilient sealingmember 22 is secured against movement at its upper end by pl-ug 24 and washer 25.Plug 24 has aflange 26 which acts as a stop for splitring 28.Ring 28 is carried in a cooperatingrecess 27 inouter housing 10.Ring 28 normally slides up and down onhousing member 12 as the parts are telescoped, but ange-stop 26 prevents separation ofhousings 10, 12. Outer housing member may be telescoped downwardly to wherering 28 is just oppositeannular recess 30 ininner housing 12. This permits splitring 28 to be pressed inwardly by inserting a tool into slot (or slots) 31. Whenring 28 is pressed inwardly intorecess 30, it disengages recess 27 inhousing 10 and thereby permitshousing 10 to be removed fromhousing 12.

Sealingmember 22 is held in place at its lower end byplug 32 and washer 33.Recesses 35 receive a tool to screw bushing 16 tightly againstflange 36. Thus the lower end ofhousing 12 can be clamped against sealinggasket 37. Gasket 37 is held in place bynut 38 and 37, 38hold diaphragm 39 seated incollar 18.

A conduit, preferably a flexible tube, may be connected 3,238,784 Patented Mar. 8, 1966 to the top end ofhousing 10 at 40 for transfer of fluid to, or from, a remote location.

In use, Huid may be transferred thru the assembly andhollow needle 14 from 40 to tank 20, or reversely, by pressinghousing member 10 downwardly to carryneedle 14thru diaphragm 39 as illustrated in broken lines. When the transfer operation is completed,housing 10 is raised to thereby withdrawneedle 14.Diaphragm 39, of soft material, flows together to plug and seal the hole formerly occupied by the needle. Withneedle 14 withdrawn,bushing 16 is removed fromcollar 18 and thushousings 10, 12 may be removed. Noting FIG. 2, aplug 42 and O-ring gasket 43 may be used to closecollar 18 against entry of foreign material.

It will be noted thatneedle 14, when withdrawn, is sealingly protected byresilient member 22. Thus, foreign matter cannot contaminate the needle, or contaminants on the needle may not contaminate surrounding objects or injure personnel.

FIG. 3 is similar to FIG- 1 except that twogasket seals 46, 48 replaceseal 22 of FIG. 1. This leaves an open but sealed space 47 into whichhollow needle 14 may retract asmember 10 is telescoped upwardly.

We claim:

1. A needle assembly comprising; a first housing member, a second housing member telescopically connected to said rst hosuing member, a needle lixedly secured to the rst housing member, sealing means in sealing relationship with said second housing member and in sliding sealing contact about said needle, and means for detachably connecting said second housing member to an internally threaded collar comprising a sealing diaphragm substantially in axial alignment with said needle, a gasket engaging said diaphragm, an externally threaded nut engaging said gasket and adapted to screw into the internally threaded collar, a llange on said second housing member, and an externally threaded bushing engaging said flange and adapted to screw into the internally threaded collar for sealingly securing the parts together.

2. Apparatus as set forth in claim 1 and a plug and washer secured in said second housing member securing said sealing means in said second housing member.

References Cited by the Examiner UNITED STATES PATENTS 2,627,857 2/1953 Marcelli 141-130 X 2,839,152 6/ 1958 Tracht. 3,094,155 6/ 1963 Tarmasso 141-329 FOREIGN PATENTS 906,711 5/ 1945 France.

LOUIS R. PRINCE, Primary Examiner- S. C. SWISHER, Assistant Examiner.

Claims (1)

1. A NEEDLE ASSEMBLY COMPRISING; A FIRST HOUSING MEMBER, A SECOND HOUSING MEMBER TELESCOPICALLY CONNECTED TO SAID FIRST HOUSING MEMBER, A NEEDLE FIXEDLY SECURED TO THE FIRST HOUSING MEMBER, SEALING MEAN IN SEALING RELATIONSHIP WITH SAID SECOND HOUSING MEMBER AND IN SLIDING SEALING CONTACT ABOUT SAID NEEDLE, AND MEANS FOR DETACHABLY CONNECTING SAID SECOND HOUSING MEMBER TO AN INTERNALLY THREADED CELLAR COMPRISING A SEALING DIAPHRAGM SUBSTANTIALLY IN AXIAL ALIGNMENT WITH SAID NEEDLE, A GASKET ENGAGIANG SAID DIAPHRAGM, AN EXTERNALLY THREADED NUT ENGAGING SAID GASKET AND ADAPTED TO SCREW INTO THE INTERNALLY THREADED COLLAR, A FLANGE ON SAID SECOND HOUSING MEMBER, AND AN EXTERNALLY THREADED BUSHING ENGAGING SAID FLANGE AND ADAPTED TO SCREW INTO THE INTERNALLY THREADED COLLAR FOR SEALINGLY SECURING THE PARTS TOGETHER.

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