Patent EP0372073B1 successfully refreshed from Google Patents.
US3901410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Captive tip-seal valve
Assignee: Individual
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Filing: 1974-07-19
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Granted: 1975-08-26
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Expires: 1994-07-19
Abstract
Abstract The invention comtemplates valve structure for a container of liquid products, for enabling selective dispensing of such products, upon tilting or tipping the dispensing axis with respect to the container axis. A closure cap has a central aperture in its closed end, for open-close coaction with the dispensing end of the valve structure, and the closure cap is captive assembled with and threadedly engaged to an exposed part of the valve structure. The relationship is such that upon full threaded advance of the engagement, the cap skirt is non-tiltably abutted to a part of the container and the cap aperture is closed by engagement to valve structure; on the other hand, upon capunthreading displacement, the cap aperture is opened and product may be dispensed upon tilting the valve structure.
Inventors
- 👤 Robert S Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:53
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/44; B65D83/46
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
309 words
In combination, for use in a pressurized container, a rigid centrally apertured container closure member having a conical taper in the direction of the aperture, an elastomeric bushing fitted to the concave taper and extending through the aperture, said bushing having a central longitudinal bore extending axially through the aperture region of the closure member, a valve member seated in axial abutment with said bushing and including a dispensing stem with an outer annular body portion fitted to and extending through and beyond the outer end of the bore of the bushing, said stem further comprising an elongate pin radially spaced within the bore of said outer body portion to define an annular passage for flow of dispensed container contents, and a closure cap having a centrally apertured end and a skirt surrounding exposed parts of both said stem and said bushing, axially interfering rotatable means coacting between an exposed part of said annular body portion and said skirt for captive axial retention of said cap on said stem, and threaded means coacting between an exposed part of said annular body portion and said skirt for relative axial threaded positioning of said cap and stem, said pin being so formed as to coact with the aperture of said cap end to effectively close the aperture for such advance of said threaded engagement that said skirt abuts said closure member; whereby, upon retraction of threaded engagement and in the presence of internal pressure within a container of which said closure member forms a part, said valve member and bushing are pressure-loaded against the convergent taper, and said cap is caused to relieve itself from contact with said closure member and to effectively open the cap-end aperture, so that product may then be selectively dispensed upon tipped displacement of said cap and stem against the yielding support provided by said bushing.
Claim 2
Dependent Claim
309 words
In combination, for use in a pressurized container, a rigid centrally apertured container closure member having a conical taper in the direction of the aperture, an elastomeric bushing fitted to the concave taper and extending through the aperture, said bushing having a central longitudinal bore extending axially through the aperture region of the closure member, a valve member seated in axial abutment with said bushing and including a dispensing stem with an outer annular body portion fitted to and extending through and beyond the outer end of the bore of the bushing, said stem further comprising an elongate pin radially spaced within the bore of said outer body portion to define an annular passage for flow of dispensed container contents, and a closure cap having a centrally apertured end and a skirt surrounding exposed parts of both said stem and said bushing, axially interfering rotatable means coacting between an exposed part of said annular body portion and said skirt for captive axial retention of said cap on said stem, and threaded means coacting between an exposed part of said annular body portion and said skirt for relative axial threaded positioning of said cap and stem, said pin being so formed as to coact with the aperture of said cap end to effectively close the aperture for such advance of said threaded engagement that said skirt abuts said closure member; whereby, upon retraction of threaded engagement and in the presence of internal pressure within a container of which said closure member forms a part, said valve member and bushing are pressure-loaded against the convergent taper, and said cap is caused to relieve itself from contact with said closure member and to effectively open the cap-end aperture, so that product may then be selectively dispensed upon tipped displacement of said cap and stem against the yielding support provided by said bushing.
Claim 3
Dependent Claim
30 words
The combination of claim 1, in which said closure member is the integral frusto-conical top-end wall of a cylindrical container which is open at its other end, for bottom-fill application.
Claim 4
Dependent Claim
32 words
The combination of claim 1, in which said closure member is a circular end-wall member having peripheral formations adapted for assembly to a container open at its top end, for top-fill application.
Claim 5
Dependent Claim
25 words
The combination of claim 1, in which said bushing has a conically tapering formation adapted to circumferentially continuously extensively and yieldingly engage said closure taper.
Claim 6
Dependent Claim
27 words
The combination of claim 4, in which the unstressed taper of said bushing is at a greater included angle than that of the taper of said closure.
Claim 7
Dependent Claim
25 words
The combination of claim 1, in which said bushing has a reduced circumferential waist at which it is received in the aperture of said closure.
Claim 8
Dependent Claim
21 words
The combination of claim 1, in which said pin projects axially beyond the axially outer end of said annular body portion.
Claim 9
Dependent Claim
20 words
The combination of claim 1, in which said pin and cap end are tapered at their interfit for aperture closing.
Claim 10
Dependent Claim
34 words
The combination of claim 1, in which said stem has projecting formations engaging the bore of said bushing to resist relative rotation and to permit axial displacement of said stem within the bushing bore.
Claim 11
Dependent Claim
77 words
The combination of claim 1, in which adjacent radially spaced surface regions of said container-closure member and of the skirt of said cap include coacting ratchet-tooth formations having escapement action in the thread-advancing direction of cap rotation and having locking engagement in the retracting direction of cap rotation, said skirt being resiliently deformable to permit such escapement action and to permit such deliberate deformation by manual actuation as to relieve ratchet engagement for a cap-retracting unthreading rotation.
Claim 12
Dependent Claim
246 words
In combination, for use in a container of liquid product, a rigid centrally apertured container closure member having inner and outer sides, an elastomeric bushing in axially-retaining fitted relation to said member and extending through the aperture and between inner and outer sides, said bushing having a central longitudinal bore extending through the aperture region of the closure member, a valve member seated in axial abutment with the inner end of said bushing and including a dispensing stem with an outer annular body portion fitted to and extending through and beyond the outer end of the bore of the bushing, said stem further comprising an elongate pin portion extending beyond the axially outer end of said annular portion, and a closure cap having a centrally apertured end and a skirt surrounding outwardly exposed parts of both said stem and said bushing, axially interfering rotatable means coacting between an an exposed part of said annular body portion and said skirt for captive axial retention of said cap on said stem, and threaded means coacting between an exposed part of said annular body portion and said skirt for relative axial threaded positioning of said cap and stem, said pin being so formed as to coact with the aperture for such advance of said threaded engagment that said skirt abuts said closure member; whereby, upon retraction of threaded engagement, said cap is caused to relieve itself from contact with said closure member and to effectively open the capend aperture.
Claim 13
Dependent Claim
246 words
In combination, for use in a container of liquid product, a rigid centrally apertured container closure member having inner and outer sides, an elastomeric bushing in axially-retaining fitted relation to said member and extending through the aperture and between inner and outer sides, said bushing having a central longitudinal bore extending through the aperture region of the closure member, a valve member seated in axial abutment with the inner end of said bushing and including a dispensing stem with an outer annular body portion fitted to and extending through and beyond the outer end of the bore of the bushing, said stem further comprising an elongate pin portion extending beyond the axially outer end of said annular portion, and a closure cap having a centrally apertured end and a skirt surrounding outwardly exposed parts of both said stem and said bushing, axially interfering rotatable means coacting between an an exposed part of said annular body portion and said skirt for captive axial retention of said cap on said stem, and threaded means coacting between an exposed part of said annular body portion and said skirt for relative axial threaded positioning of said cap and stem, said pin being so formed as to coact with the aperture for such advance of said threaded engagment that said skirt abuts said closure member; whereby, upon retraction of threaded engagement, said cap is caused to relieve itself from contact with said closure member and to effectively open the capend aperture.
Claim 14
Dependent Claim
70 words
The combination of claim 11, wherein the parts are so longitudinally dimensioned that, upon advance of the threaded engagement, said skirt abuts said closure member before said pin completes full closure of the cap-end aperture, whereby said valve member is driven into axially squeezing sealing contact with the adjacent end of said bushing and said bushing is compressionally sealed to the inner surface of said closure member upon aperture closure.
Claim 15
Dependent Claim
24 words
The combination of claim 11, in which the durometer hardness of the material of said bushing is selected in the range 40 to 80.
Claim 16
Dependent Claim
18 words
The combination of claim 11, in which the durometer of the material of said bushing is approximately 60.
Claim 17
Dependent Claim
36 words
The combination of claim 10, in which said ratchet-tooth formations comprise a circumferential series of radially outward teeth carried by the container-closure member, and at least one radially inward ratchet-engaging member carried by said cap skirt.
Claim 18
Dependent Claim
23 words
The combination of claim 15, in which said ratchet-engaging member is one of two carried by said cap skirt at diametrically opposed locations.
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |