US3353718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Syringe, column or the like
Assignee: Fischer and Porter Co
•
Filing: 1966-05-24
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Granted: 1967-11-21
•
Expires: 1986-05-24
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Mclay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:39
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/315; A61M5/31565; A61M5/31576; A61M5/31583; A61M5/31586; B; B01; B01L; B01L3/00; B01L3/02; B01L3/021; B01L3/0217; B01L3/0224; A61M5/14; A61M5/142; A61M5/145; A61M5/1452; A61M2005/14573; A61M5/31501; A61M5/31505; A61M5/31578; A61M5/3158; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19735
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
A SYRINGE, COLUMN OR THE LIKE, INCLUDING A RIGID TRANSPARENT GLASS BARREL HAVING A GLAZED CYLINDRICAL BORE AND A DISCHRAGE HOLE OF SUBSTANTIALLY SMALLER DIAMETER EXTENDING FROM THE INNER END OF SAID BORE TO THE EXTERIOR OF THE BARREL AND SAID BARREL HAVING ITS OTHER END SCREWTHREADED, A PISTON OPERATIVELY DISPOSED WITHIN SAID BORE FORMED OF A GENERALLY CHEMICALLY INERT AND GENERALLY FORM-RETAINING THOUGH SLIGHTLY RESILIENTLY DEFORMABLE SYNTHETIC RESIN CAPABLE OF FORMING AN UNLUBRICATED NONSEIZING SLIABLE FLUID-SEALING DRY CONTACT WITH THE GLAZED SURFACE OF SAID BORE, SAID PISTON HAVING AN INTEGRAL PISTON-RING IN PROXIMITY OF EACH OF ITS TWO ENDS, SAID PISTON-RINGS BEING OF SMALL AXIAL EXTENT AND OF A DIAMETER WHICH IS LARGER THAN THE DIAMETER OF ITS BODY PORTION INTERMEDIATE THE PISTON-RINGS THEREOF AND WHICH IS SUFFICIENTLY LARGER THAN THE BORE OF THE BARREL IN THE UNCOMPRESSED CONDITION THEREOF SO AS TO BE RESILIENTLY COMPRESSED WHEN THE PISTON IS OPERATIVELY DISPOSED IN THE BORE OF THE BARREL, A PISTON-ROD HAVING ITS INNER END AFFIXED TO THE PISTON AND HAVING A PORTION THEREOF EXTERNALLY
Claim 2
Dependent Claim
175 words
A SYRINGE, COLUMN OR THE LIKE, INCLUDING A RIGID TRANSPARENT GLASS BARREL HAVING A GLAZED CYLINDRICAL BORE AND A DISCHRAGE HOLE OF SUBSTANTIALLY SMALLER DIAMETER EXTENDING FROM THE INNER END OF SAID BORE TO THE EXTERIOR OF THE BARREL AND SAID BARREL HAVING ITS OTHER END SCREWTHREADED, A PISTON OPERATIVELY DISPOSED WITHIN SAID BORE FORMED OF A GENERALLY CHEMICALLY INERT AND GENERALLY FORM-RETAINING THOUGH SLIGHTLY RESILIENTLY DEFORMABLE SYNTHETIC RESIN CAPABLE OF FORMING AN UNLUBRICATED NONSEIZING SLIABLE FLUID-SEALING DRY CONTACT WITH THE GLAZED SURFACE OF SAID BORE, SAID PISTON HAVING AN INTEGRAL PISTON-RING IN PROXIMITY OF EACH OF ITS TWO ENDS, SAID PISTON-RINGS BEING OF SMALL AXIAL EXTENT AND OF A DIAMETER WHICH IS LARGER THAN THE DIAMETER OF ITS BODY PORTION INTERMEDIATE THE PISTON-RINGS THEREOF AND WHICH IS SUFFICIENTLY LARGER THAN THE BORE OF THE BARREL IN THE UNCOMPRESSED CONDITION THEREOF SO AS TO BE RESILIENTLY COMPRESSED WHEN THE PISTON IS OPERATIVELY DISPOSED IN THE BORE OF THE BARREL, A PISTON-ROD HAVING ITS INNER END AFFIXED TO THE PISTON AND HAVING A PORTION THEREOF EXTERNALLY
References Cited (Backward Citations)
US949163A
Cited
US1624138A
Cited
US2745575A
Cited
US3146142A
Cited
US3212685A
Cited
US3153496A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |