Patent US4350666A successfully refreshed from Google Patents.
US4350666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for dispensing a chemical into a fluid
Assignee: Individual
•
Filing: 1980-08-19
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Granted: 1982-09-21
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Expires: 2000-08-19
Abstract
Abstract This disclosure relates to an apparatus for dispensing which incorporates a jacketed compressed pellet of soluble material provided with an effective mixing chamber having a restricted opening to a surrounding ambient fluid to serve as a device to control the rate of dissolution of the chemical into the ambient fluid so that the dispensing apparatus has a service life substantially greater than the devices of the prior art.
Inventors
- 👤 James H. Klutts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:17
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/688; B; B01; B01F; B01F21/00; B01F21/20; B01F21/22; C02F2103/00; C02F2103/42; Y; Y10; Y10S; Y10S4/00; Y10S4/10; Y10T; Y10T137/00; Y10T137/4891
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
82 words
An apparatus for dispensing a soluble chemical into a solvent fluid, comprising: pellet means comprising a solid unitary body of said soluble chemical and having substantially planar surfaces for substantially retaining said chemical as a unitary mass prior to dissolving; substantially encapsulating non-separable case means in contact with all but a small portion of one of said planar surfaces of said solid unitary body for initially permitting a fluid restricted access to only said planar surface portion of said solid unitary body.
Claim 2
Independent Claim
82 words
An apparatus for dispensing a soluble chemical into a solvent fluid, comprising: pellet means comprising a solid unitary body of said soluble chemical and having substantially planar surfaces for substantially retaining said chemical as a unitary mass prior to dissolving; substantially encapsulating non-separable case means in contact with all but a small portion of one of said planar surfaces of said solid unitary body for initially permitting a fluid restricted access to only said planar surface portion of said solid unitary body.
Claim 3
Dependent Claim
55 words
An apparatus in accordance with claim 1 wherein said case means comprising: a jacket having communication with said pellet means; said jacket provided with an aperture having an area substantially smaller than the area of one of said surfaces; and said aperture having a common opening to one of said surfaces and to said fluid.
Claim 4
Dependent Claim
15 words
An apparatus in accordance with claim 2 wherein said jacket having impermeability to said fluid.
Claim 5
Dependent Claim
17 words
An apparatus in accordance with claim 3 wherein said pellet means comprising a pellet of said chemical.
Claim 6
Dependent Claim
16 words
An apparatus in accordance with claim 4 wherein said pellet having substantial impermeability to said fluid.
Claim 7
Dependent Claim
22 words
An apparatus in accordance with claim 5 wherein: said fluid comprising water; and said chemical comprising a material having substantial free chlorine.
Claim 8
Dependent Claim
27 words
An apparatus in accordance with claim 6 wherein said aperture having an area comprising 2 percent to 4 percent of the area of one of said surfaces.
Claim 9
Dependent Claim
26 words
An apparatus in accordance with claim 6 wherein said pellet means further comprising dye means for indicating at least the imminence of exhaustion of said chemical.
Claim 10
Dependent Claim
33 words
An apparatus in accordance with claim 8 wherein said dye means comprising: a pocket having communication with a portion of said pellet distal to said aperture; and a soluble dye filling said pocket.
Claim 11
Dependent Claim
33 words
An apparatus in accordance with claim 9 wherein: said dye pocket having a location within said pellet so that release of said dye into said fluid signals the imminent exhaustion of said chemical.
Claim 12
Dependent Claim
33 words
An apparatus in accordance with claim 9 wherein said dye pocket having a location external to said pellet so that release of said dye into said fluid signals complete exhaustion of said chemical.
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) | 1985-09-20 | 1986-03-22 | 1986-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-20 | 1990-03-22 | 1990-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-20 | 1994-03-22 | 1994-09-21 | $7700.00 | Window Closed / Lapsed |