US4240422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Syringe with needle and method of attaching same
Assignee: Allegiance Corp
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Filing: 1978-10-23
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Granted: 1980-12-23
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Expires: 1998-10-23
Abstract
Abstract A hypodermic syringe with a tapered adapter surrounded by an internally threaded locking sleeve. A needle hub with at least one locking ear is threaded partway onto the tapered adapter and thereafter longitudinally staked to separate pressure contact between the needle ear and thread during storage.
Inventors
- 👤 Thomas A. Hazen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:14
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/32; A61M5/34; A61M5/347
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
75 words
A syringe and attached needle hub in which the syringe has a tapered adapter surrounded by an internally threaded locking sleeve and the needle hub has at least one laterally protruding ear, wherein the improvement comprises: a longitudinal spacing between a forward surface of the needle hub's ear and a longitudinally aligned rearward surface area of a thread on the sleeve, whereby abutting pressure between the thread and needle hub ear are relieved during storage.
Claim 2
Dependent Claim
75 words
A syringe and attached needle hub in which the syringe has a tapered adapter surrounded by an internally threaded locking sleeve and the needle hub has at least one laterally protruding ear, wherein the improvement comprises: a longitudinal spacing between a forward surface of the needle hub's ear and a longitudinally aligned rearward surface area of a thread on the sleeve, whereby abutting pressure between the thread and needle hub ear are relieved during storage.
Claim 3
Dependent Claim
23 words
A syringe and attached needle hub as set forth in claim 1, wherein the needle hub has a pair of diametrically opposed ears.
Claim 4
Dependent Claim
24 words
A syringe and attached needle hub as set forth in claim 1, wherein both the needle hub ears and locking sleeve threads are thermoplastic.
Claim 5
Dependent Claim
32 words
A syringe and attached needle hub as set forth in claim 1, wherein the locking sleeve has a double helic thread with approximately 8 simulate threads per inch based on both threads.
Claim 6
Independent Claim
84 words
A method of assembling a needle hub with at least one laterally protruding ear to a syringe with a tapered adapter surrounded by an internally threaded locking sleeve, which includes the steps of: (a) screwing the needle hub partway onto the adapter with the ear engaging the threads of the locking sleeves; and (b) longitudinally staking the needle hub to the syringe adapter to longitudinally separate a forward surface of the needle hub ear from a longitudinally aligned rearward surface of the sleeve's thread.
Claim 7
Independent Claim
84 words
A method of assembling a needle hub with at least one laterally protruding ear to a syringe with a tapered adapter surrounded by an internally threaded locking sleeve, which includes the steps of: (a) screwing the needle hub partway onto the adapter with the ear engaging the threads of the locking sleeves; and (b) longitudinally staking the needle hub to the syringe adapter to longitudinally separate a forward surface of the needle hub ear from a longitudinally aligned rearward surface of the sleeve's thread.
Claim 8
Dependent Claim
17 words
A method as set forth in claim 5, wherein the staking force is at least 10 pounds.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-23 | 1984-06-23 | 1984-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-23 | 1988-06-23 | 1988-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-23 | 1992-06-23 | 1992-12-23 | $7700.00 | Window Closed / Lapsed |