US3913231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Saliva ejector
Assignee: Individual
•
Filing: 1974-10-23
•
Granted: 1975-10-21
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Expires: 1994-10-23
Abstract
Abstract A saliva ejector comprises a flexible tube which is flattened at one end thereof by a wire bend being drawn at least partially into the tube from said one end.
Inventors
- 👤 John Harry Orsing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:49
CPC Classifications
A; A61; A61C; A61C17/00; A61C17/06; A61C17/08; A61C17/096
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
84 words
A single-use saliva ejector comprising a flexible tube, a stiffening flexible wire disposed in said tube, and a bend formed by said wire, said bend having a largest cross dimension which is larger than the inner diameter of the tube and being drawn for at least a major portion thereof into the tube from one end thereof in order to keep an end portion of the tube streched and flattened the wire being at the same time retained in the tube by said bend.
Claim 2
Dependent Claim
84 words
A single-use saliva ejector comprising a flexible tube, a stiffening flexible wire disposed in said tube, and a bend formed by said wire, said bend having a largest cross dimension which is larger than the inner diameter of the tube and being drawn for at least a major portion thereof into the tube from one end thereof in order to keep an end portion of the tube streched and flattened the wire being at the same time retained in the tube by said bend.
Claim 3
Dependent Claim
24 words
A saliva ejector as claimed in claim 1 wherein the tube wall forms a local protrusion which follows the form of said wire bend.
Claim 4
Dependent Claim
15 words
A saliva ejector as claimed in claim 1 wherein the wire bend comprises a loop.
Claim 5
Dependent Claim
17 words
A saliva ejector as claimed in claim 3 wherein the wire bend comprises a substantially circular loop.
Claim 6
Dependent Claim
27 words
A saliva ejector as claimed in claim 1 wherein the end portion of the wire bend forms a hook engageing the inner surface of the tube wall.
Claim 7
Dependent Claim
22 words
A saliva ejector as claimed in claim 1 wherein the tube is perforated in connection with the streched and flattened end portion.
References Cited (Backward Citations)
US2670539A
Cited
US2859518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |