US3898922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deodorisation unit
Assignee: BURGER BOY RED TOP REFRESHMENT KIOSKS Ltd
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Filing: 1973-08-02
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Granted: 1975-08-12
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Expires: 1993-08-02
Abstract
Abstract A deodorisation unit for deodorising cooking or like fumes, comprising a plurality of absorbent or porous wicks extending between an upper deodorising fluid reservoir and a lower container for surplus deodorising fluid and a pump for periodically returning surplus deodorising fluid from the lower container to the upper reservoir.
Inventors
- 👤 Jack Mark Charles Savage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:37
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/20; F24C15/2057
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
116 words
A deodorisation unit comprising ducting through which fumes to be deodorised are forced, an upper fluid reservoir for containing deodorising fluid mounted Above the ducting, a lower fluid container for surplus deodorising fluid mounted oppositely below the ducting, a plurality of absorbent wicks extending from said reservoir across the ducting in the direct path of said fumes and into said container, said wicks being arranged in staggered rows to ensure good mixing of the fumes and the deodorising fluid vapour evaporating from the wicks, a pump having an inlet connected to said container and an outlet connected to said reservoir and means for periodically actuating said pump for transferring fluid from said container to said reservoir.
Claim 2
Dependent Claim
116 words
A deodorisation unit comprising ducting through which fumes to be deodorised are forced, an upper fluid reservoir for containing deodorising fluid mounted Above the ducting, a lower fluid container for surplus deodorising fluid mounted oppositely below the ducting, a plurality of absorbent wicks extending from said reservoir across the ducting in the direct path of said fumes and into said container, said wicks being arranged in staggered rows to ensure good mixing of the fumes and the deodorising fluid vapour evaporating from the wicks, a pump having an inlet connected to said container and an outlet connected to said reservoir and means for periodically actuating said pump for transferring fluid from said container to said reservoir.
Claim 3
Dependent Claim
51 words
A deodorisation unit as claimed in claim 1, wherein the underside of the reservoir is perforated to allow the upper ends of the wicks to extend into the deodorising fluid, the size of the perforations being chosen so that the wicks always remain moist under all operating conditions of the unit.
Claim 4
Dependent Claim
32 words
A deodorisation unit as claimed in claim 1, wherein the wicks are arranged in staggered rows to ensure good mixing of the fumes and the deodorising fluid vapour evaporating from the wicks.
Claim 5
Dependent Claim
25 words
A deodorisation unit as defined in claim 1, wherein means is provided responsive to the liquid level in said reservoir for periodically actuating said pump.
Claim 6
Dependent Claim
54 words
A deodorisation unit as claimed in claim 4, wherein the pump is switched on and off by means of a float in the reservoir, the float acting to activate the pump when the fluid drops below a certain pre-selected level and switch off the pump when a second higher pre-selected fluid level is reached.
Claim 7
Dependent Claim
40 words
In combination with the deodorisation unit claimed in claim 1, a roof unit for a portable refreshment unit having means therein defining said ducting, there being a fan in said ducting for moving fumes therethrough and to an exhaust ventilator.
Claim 8
Dependent Claim
45 words
A roof unit as claimed in claim 6, further including a second deodorisation unit, and wherein the roof unit is generally rectangular in plan, the deodorisation units being disposed at adjacent corners of the roof and being both connected to the fan by appropriate ducting.
Claim 9
Dependent Claim
24 words
A roof unit as claimed in claim 7, wherein each deodorisation unit contains baffles in said ducting to promote the desired turbulent air-flow therethrough.
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) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |