US3597826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for uniting a plunger and a piston of a fully assembled hypodermic needle syringe
Assignee: Individual
•
Filing: 1969-07-28
•
Granted: 1971-08-10
•
Expires: 1989-07-28
Abstract
Abstract A plunger to actuate the piston of a fully assembled hypodermic needle syringe is united to said piston by moving the syringe longitudinally toward a stationary plunger to engage the piston with the plunger and rotating the syringe to unite the piston with the plunger. After the piston is united with the plunger, the syringe is lowered and removed from the apparatus.
Inventors
- 👤 Walter A Shields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:43
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/315; A61M5/31511; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53313; Y10T29/53322; Y10T29/53339; Y10T29/53374; Y10T29/53687
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
181 words
In apparatus for uniting a plunger and a piston of a fully assembled hypodermic needle syringe, said syringe having an annular flange at the piston end thereof, said plunger having a screw-threaded plug and said piston having a screw-threaded recess for receiving said plunger plug and uniting the plunger and the piston, means to intermittently convey spaced hypodermic needle syringes, said means being provided with a pair of spaced rails to engage the syringe flanges and support the syringes while they are conveyed, means to intermittently convey spaced plungers above and intersecting the path of conveyance of the hypodermic needle syringes, whereby a syringe and a plunger are periodically positioned in vertical alignment with each other, a first member vertically reciprocated into and out of engagement with the hypodermic needle portion of the syringe in vertical alignment with a plunger and arranged to lift said syringe and engage the piston recess with the plunger plug, and motive means connected to said first reciprocating member and arranged to rotate said first member and the syringe and unite the piston and the plunger.
Claim 2
Dependent Claim
181 words
In apparatus for uniting a plunger and a piston of a fully assembled hypodermic needle syringe, said syringe having an annular flange at the piston end thereof, said plunger having a screw-threaded plug and said piston having a screw-threaded recess for receiving said plunger plug and uniting the plunger and the piston, means to intermittently convey spaced hypodermic needle syringes, said means being provided with a pair of spaced rails to engage the syringe flanges and support the syringes while they are conveyed, means to intermittently convey spaced plungers above and intersecting the path of conveyance of the hypodermic needle syringes, whereby a syringe and a plunger are periodically positioned in vertical alignment with each other, a first member vertically reciprocated into and out of engagement with the hypodermic needle portion of the syringe in vertical alignment with a plunger and arranged to lift said syringe and engage the piston recess with the plunger plug, and motive means connected to said first reciprocating member and arranged to rotate said first member and the syringe and unite the piston and the plunger.
Claim 3
Dependent Claim
45 words
In apparatus as claimed in claim 1, a second member having a forked end and reciprocated in a horizontal plane above said syringe supporting rails and actuated to engage the forked end with the syringe below the annular flange during the rotation of said syringe.
Claim 4
Dependent Claim
39 words
In apparatus as claimed in claim 1, a finger reciprocated toward and away from the syringe flange and actuated to engage said flange subsequent to the uniting of the piston and the plunger to relieve pressure in the syringe.
Claim 5
Dependent Claim
68 words
Apparatus as claimed in claim 1, wherein the plunger conveying means comprises an intermittently rotated turret having an annular series of equidistantly spaced recesses arranged to support the plungers in suspended position, and a third member reciprocated in front of a recess positioned in vertical alignment with the first member and actuated to engage said plunger during the positioning of said plunger in vertical alignment with a syringe.
Claim 6
Dependent Claim
41 words
In apparatus as claimed in claim 1, a fourth member reciprocally mounted above the plunger positioned by its conveying means in vertical alignment with the syringe and actuated to engage said plunger during the syringe lifting movement of the first member.
Claim 7
Dependent Claim
53 words
In apparatus as claimed in claim 1, a fifth member reciprocally mounted in a horizontal plane between the syringe-conveying means and the plunger conveying means and actuated to engage the syringe and facilitate the removal of the plunger from its conveying means subsequent to the rotation of the syringe by the first member.
Claim 8
Dependent Claim
38 words
In apparatus as claimed in claim 6, pneumatic motive means connected to the second, third, fourth and fifth members and arranged to periodically actuate said members during the periods of rest of the syringe and plunger conveying means.
Claim 9
Dependent Claim
38 words
Apparatus as claimed in claim 1, wherein the first member comprises a rod having a recess in its upper end to receive the hypodermic needle and the lower end of said rod being connected to the motive means.
Claim 10
Dependent Claim
24 words
In apparatus as claimed in claim 1, a lever pivotally supporting the motive means for the first member, and a cam reciprocating said lever.
References Cited (Backward Citations)
US2698478A
Cited
US2810249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |