US4341948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus with built-in heating device for disinfecting contact lenses
Assignee: CIKAB A SWEDISH CORP AB
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Filing: 1981-02-02
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Granted: 1982-07-27
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Expires: 2001-02-02
Abstract
Abstract Apparatus for disinfecting contact lenses by heating, comprising a reservoir designed for holding a liquid and having a tight lid together with a heating device for heating of liquid therein, wherein the reservoir comprises a raised middle part or bridge for dividing said reservoir into two separate chambers or wells, and having a built-in heating device for direct heating of the liquid in said chambers.
Inventors
- 👤 Staffan Sundstrom
- 👤 Tore Herlestam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:59
CPC Classifications
A; A61; A61L; A61L2/00; A61L2/02; A61L2/04; A61L12/00; A61L12/02; A61L12/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
145 words
Apparatus for disinfecting contact lenses by heating, comprising a reservoir adapted for holding a liquid and having a tight lid together with a heating device for heating of liquid therein, wherein the reservoir comprises a raised middle part or bridge for dividing said reservoir into two separate chambers or wells, said raised middle part being equipped with at least one hollow recess at its top, which enables liquid to communicate between the chambers in such a way that spillage of liquid is avoided when a lens is removed from either of said chambers, said raised middle part having side-walls, and having a built-in heating device for heating of the liquid in said chambers, said heating device being located adjacent to each of said side-walls for heating of liquid in each of said chambers of said reservoir, said heating device being of the electric resistance type.
Claim 2
Dependent Claim
145 words
Apparatus for disinfecting contact lenses by heating, comprising a reservoir adapted for holding a liquid and having a tight lid together with a heating device for heating of liquid therein, wherein the reservoir comprises a raised middle part or bridge for dividing said reservoir into two separate chambers or wells, said raised middle part being equipped with at least one hollow recess at its top, which enables liquid to communicate between the chambers in such a way that spillage of liquid is avoided when a lens is removed from either of said chambers, said raised middle part having side-walls, and having a built-in heating device for heating of the liquid in said chambers, said heating device being located adjacent to each of said side-walls for heating of liquid in each of said chambers of said reservoir, said heating device being of the electric resistance type.
Claim 3
Dependent Claim
28 words
Apparatus according to claim 1, wherein the raised middle part has sloping side-walls and widens toward the bottom, to faciliate removal of lenses in contact with these side-walls.
Claim 4
Dependent Claim
25 words
Apparatus according to claim 2, wherein said chambers have step outer side-walls, so that the amount of liquid required to cover each lens is minimized.
Claim 5
Dependent Claim
26 words
Apparatus according to claim 1, 2, or 3, wherein the raised middle part is equipped at its top with two hollow recesses one at each end.
Claim 6
Dependent Claim
34 words
Apparatus according to claim 1, 2, or 3, wherein a thermostat is present which, when the lquid has reached the desired temperature, is adapted to cut off the flow of current to the resistors.
Claim 7
Dependent Claim
43 words
Apparatus according to claim 1, 2, or 3, wherein the interior of the lid is so related to the top of the middle part that, when the lid is on, a transfer of a lens from one chamber to the other is impossible.
Claim 8
Dependent Claim
26 words
Apparatus according to claim 2 or 3, wherein the reservoir and the lid are equipped with air cores to insulate the heated part of the apparatus.
Claim 9
Dependent Claim
21 words
Apparatus according to claim 6, wherein the lid and reservoir are so constructed as to be connected by means of threads.
Claim 10
Dependent Claim
29 words
Apparatus according to claim 8, wherein a light-emitting diode is also present and wherein the thermostat is also adapted to cut off the flow of current to said diode.
Claim 11
Dependent Claim
25 words
Apparatus according claim 1, 2 or 3, wherin the heating device is imbedded in plastic padding having good thermal conductivity and high electrical insulation characteristics.
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) | 1985-07-26 | 1986-01-25 | 1986-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-26 | 1990-01-25 | 1990-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-26 | 1994-01-25 | 1994-07-27 | $7700.00 | Window Closed / Lapsed |