US3633580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hypodermic needle
Assignee: Knox Laboratories Inc
•
Filing: 1969-09-29
•
Granted: 1972-01-11
•
Expires: 1989-09-29
Abstract
Abstract Hypodermic needlepoints are manufactured from tubular members by deforming top and bottom wall portions from opposite sides of the tubular member by gradually and progressively pressing generally inwardly against the top and bottom wall portions with dies os as to cause the top and bottom wall portions to gradually slop together and meet in an area where they intimately contact each other, and removing some of the opposite sidewall portions to create side surfaces which slope together from the unsloped portion of the tubular member to where they intersect in a cutting point in the area where the top and bottom wall portions are in intimate contact. The needlepoint consists of a regular quadrilateral pyramid having substantially identical triangular faces. Two opposing faces have substantially elliptical or pearshaped openings therethrough providing communication between the hollow interior of the needle and the exterior of the needle adjacent to the apex of the pyramid.
Inventors
- 👤 James J Knox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:33
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/32; A61M5/3286; A61M2205/00; A61M2205/19; A61M2205/192; A61M2205/195
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
90 words
A needle for a hypodermic syringe including a hollow elongated member having one end adapted for connection to said syringe, said one end being open for communication with said syringe, said needle having its other end terminating in a portion having four substantially planar surfaces arranged in he form of a pyramid, the apex thereof being pointed, closed and forming said other end, two opposing faces of said pyramid having confronting apertures therethrough providing communication with he hollow interior of the needle and the exterior thereof adjacent said other end.
Claim 2
Dependent Claim
90 words
A needle for a hypodermic syringe including a hollow elongated member having one end adapted for connection to said syringe, said one end being open for communication with said syringe, said needle having its other end terminating in a portion having four substantially planar surfaces arranged in he form of a pyramid, the apex thereof being pointed, closed and forming said other end, two opposing faces of said pyramid having confronting apertures therethrough providing communication with he hollow interior of the needle and the exterior thereof adjacent said other end.
Claim 3
Dependent Claim
24 words
The article of claim 1 in which a. the base portion of said pyramid is substantially square and b. said pyramid is substantially equilateral.
Claim 4
Dependent Claim
105 words
The article of claim 2 in which a. the needle including a substantially cylindrical shaft, and in which b. there is a cutting edge at the intersection of each of the planar surfaces, which surfaces intersect at generally right angles, and in which c. said cutting edges extend from a front cutting point at said other end of the needle backwardly and radially outwardly toward the shaft, said edges being adapted to move apart flesh, muscle, etc., toward and over the full diameter of the shaft by reason of their being formed by and between flat side surfaces meeting at generally more than acute angles.
Claim 5
Dependent Claim
63 words
The article of claim 1 in which each aperture is substantially completely surrounded by a flat wedging and supporting surface that evenly and uniformly displaces skin, flesh, etc., outwardly and over the full body of its related portion of the needle and past a heel portion of the aperture, which heel portion is contained in the plane of the wedging and supporting surface.
Claim 6
Dependent Claim
107 words
An improved hypodermic syringe needle comprising a. hollow tubular portion and a point, said point i. having four inclined substantially planar surfaces disposed at substantially right angles one to another, ii. each of said surfaces extending generally from the outer circumference of the hollow tubular portion inward on an incline to the axis of the tubular portion, iii. each of said surfaces meeting those adjacent to it along a sharp line of contact, iv. each of at least one pair of said surfaces, the pair being any two surfaces opposite to one another, having an aperture therethrough communicating with the hollow bore of the hollow tubular portion.
Claim 7
Dependent Claim
107 words
An improved hypodermic syringe needle comprising a. hollow tubular portion and a point, said point i. having four inclined substantially planar surfaces disposed at substantially right angles one to another, ii. each of said surfaces extending generally from the outer circumference of the hollow tubular portion inward on an incline to the axis of the tubular portion, iii. each of said surfaces meeting those adjacent to it along a sharp line of contact, iv. each of at least one pair of said surfaces, the pair being any two surfaces opposite to one another, having an aperture therethrough communicating with the hollow bore of the hollow tubular portion.
References Cited (Backward Citations)
US648858A
Cited
DE818246C
Cited
US2623520A
Cited
US2697438A
Cited
US2830587A
Cited
US2746455A
Cited
US2862495A
Cited
US2989053A
Cited
US3090384A
Cited
US3119391A
Cited
US3342060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |