Patent US3814294A successfully refreshed from Google Patents.
US3814294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispenser and slide valve for use therein
Assignee: Individual
•
Filing: 1973-08-13
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Granted: 1974-06-04
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Expires: 1993-08-13
Abstract
Abstract Apparatus for the gravity assisted dispensing of selected quantities of viscous fluids is disclosed. The dispensing apparatus includes a slide valve having a slide member shaped to cooperate with a dispensing aperture to terminate flow without any excess as the valve is operated in the closing direction. The slide member further carries an O-ring seal which circumscribes the dispensing aperture to prevent leakage with the valve in the fully closed position. Spring pin means is provided to limit the movement of the slide member in at least a first direction and to retain the slide member in a cooperative relationship with the remainder of the dispenser.
Inventors
- 👤 R Stevenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:00
CPC Classifications
A; A47; A47K; A47K5/00; A47K5/06; A47K5/12; A47K5/1211; A47K5/1214
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
188 words
A slide valve comprising: means defining a dispensing aperture; bar means bridging said aperture; a valve member cooperating with said aperture to perform a valving action, said valve member being provided with an annular recess in a first planar surface thereof which faces said aperture defining means, said recess having an inner diameter in excess of the diameter of said dispensing aperture, said valve member further having at least a first integral stop thereon; an O-ring seal positioned in said valve member recess, said Oring seal being coaxial with said dispensing aperture with the valve in the closed position; means for supporting said valve member for relative movement with respect to said aperture in a direction generally aligned with said bar means; and pin means mounted on said aperture defining means, said pin means cooperating with said valve member first integral stop to limit the motion of said valve member in the valve opening direction, contact between said pin means aNd said first integral stop being commensurate with at least a portion of a first end of said valve member being withdrawn from registration with said dispensing aperture.
Claim 2
Dependent Claim
188 words
A slide valve comprising: means defining a dispensing aperture; bar means bridging said aperture; a valve member cooperating with said aperture to perform a valving action, said valve member being provided with an annular recess in a first planar surface thereof which faces said aperture defining means, said recess having an inner diameter in excess of the diameter of said dispensing aperture, said valve member further having at least a first integral stop thereon; an O-ring seal positioned in said valve member recess, said Oring seal being coaxial with said dispensing aperture with the valve in the closed position; means for supporting said valve member for relative movement with respect to said aperture in a direction generally aligned with said bar means; and pin means mounted on said aperture defining means, said pin means cooperating with said valve member first integral stop to limit the motion of said valve member in the valve opening direction, contact between said pin means aNd said first integral stop being commensurate with at least a portion of a first end of said valve member being withdrawn from registration with said dispensing aperture.
Claim 3
Dependent Claim
35 words
The apparatus of claim 1 wherein said valve member comprises: an elongated slide, said slide having at said first end thereof a cutout which cooperates with said dispensing aperture to terminate flow through said valve.
Claim 4
Dependent Claim
49 words
The apparatus of claim 2 wherein said elongated slide further comprises: a recess in a first edge thereof, said first edge being generally transverse to said first planar surface and said recess being defined by spaced shoulders, at least a first of said shoulders comprising said first integral stop.
Claim 5
Dependent Claim
47 words
The apparatus of claim 3 wherein said pin means comprises: a spring pin mounted on said supporting means, said spring pin extending transversely to the direction of motion of said slide and being located in the region of said recess in said first edge of said slide.
Claim 6
Dependent Claim
30 words
The apparatus of claim 4 wherein said supporting means comprises: a downwardly extending projection of said aperture defining means, said projection defining a pair of parallel oppositely facing recessed grooves.
Claim 7
Dependent Claim
13 words
The apparatus of claim 5 wherein said slide is generally T-shaped in cross-section.
Claim 8
Dependent Claim
31 words
The apparatus of claim 6 wherein said cutout in said first end of said slide terminates in an arcuate portion having a radius equal to the radius of said dispensing aperture.
Claim 9
Dependent Claim
35 words
The apparatus of claim 7 wherein said dispensing aperture defining means comprises: a reservoir for a fluid to be dispensed, said reservoir having a base, a circular hole in said base forming the dispensing aperture.
Claim 10
Dependent Claim
28 words
The apparatus of claim 8 wherein said bar means comprises: a portion of the base of said reservoir defining means which defines a diameter of said dispensing aperture.
Claim 11
Dependent Claim
31 words
The apparatus of claim 2 wherein said cutout in said first end of said slide terminates in an arcuate portion having a radius equal to the radius of said dispensing aperture.
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) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |