US3754707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffusing box
Assignee: L'Oréal SA
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Filing: 1972-06-21
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Granted: 1973-08-28
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Expires: 1992-06-21
Abstract
Abstract Box for holding a material to be slowly diffused comprises two mating parts, each consisting of a disc carrying a pair of concentric walls which may be interfitted to form a central chamber holding the material and an annular chamber surrounding the central chamber. Openings are provided in the walls which may be moved into and out of registration to open and close the box.
Inventors
- 👤 B Morane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:45
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
104 words
Diffusing box which comprises an inner member containing a solid product adapted to evaporate slowly and comprising a bottom carrying two concentric cylindrical walls perpendicular to said bottom, each of which walls is provided with at least one opening, and an outer member comprising two concentric cylindrical walls connected by a top which is perpendicular thereto, each of the walls of said outer member being provided with an opening and the openings in the two cylindrical walls of each member being in alignment with each other, and said members being adapted to matingly interfit with each other to define therebetween an annular ventilating space.
Claim 2
Dependent Claim
104 words
Diffusing box which comprises an inner member containing a solid product adapted to evaporate slowly and comprising a bottom carrying two concentric cylindrical walls perpendicular to said bottom, each of which walls is provided with at least one opening, and an outer member comprising two concentric cylindrical walls connected by a top which is perpendicular thereto, each of the walls of said outer member being provided with an opening and the openings in the two cylindrical walls of each member being in alignment with each other, and said members being adapted to matingly interfit with each other to define therebetween an annular ventilating space.
Claim 3
Dependent Claim
37 words
Diffusing box as claimed in claim 1 in which the openings in the walls of the inner member are regularly spaced notches having a depth substantially equal to the height of the walls of the inner member.
Claim 4
Dependent Claim
42 words
Diffusing box as claimed in claim 1 in which the base of the inner member has an annular portion between the two cylindrical walls thereof which is provided with a plurality of orifices regularly spaced about the axis of the inner member.
Claim 5
Dependent Claim
65 words
Diffusing box as claimed in claim 1 in which the openings in the cylindrical inner wall of the outer member are notches which are regularly spaced about the axis of the inner member, the depth of the notches being substantially equal to the height of the outer member, and the openings in the cylindrical outer wall of the outer member are substantially rectangular in shape.
Claim 6
Dependent Claim
78 words
Diffusing box as claimed in claim 1 in which the number of pairs of openings in the cylindrical walls of the outer member is equal to the number of pairs of openings in the cylindrical walls of the inner member, each of said openings subtending a central angle having the same value and the central angle subtended by the parts of the walls between each two adjacent openings being at least equal to that subtended by the openings.
Claim 7
Dependent Claim
37 words
Diffusing box as claimed in claim 1 in which the inner diameter of the cylindrical inner wall of the outer member is slightly greater than the outer diameter of the cylindrical inner wall of the inner member.
Claim 8
Dependent Claim
37 words
Diffusing box as claimed in claim 1 in which the outer diameter of the cylindrical outer wall of the inner member is slightly less than the inner diameter of the cylindrical outer wall of the outer member.
Claim 9
Dependent Claim
36 words
Diffusing box as claimed in claim 1 in which the bottom of the inner member constitutes the bottom of the diffusing box and the outer member acts as a cover fitting telescopically onto the inner member.
Claim 10
Dependent Claim
23 words
Diffusing box as claimed in claim 1 in which the top of the outer member has a removable central part which snaps thereinto.
Claim 11
Dependent Claim
35 words
Diffusing box as claimed in claim 1 in which the bottom has a perforation connecting the ambient atmosphere to the inner space defined by the cylindrical inner wall of the inner member of the box.
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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |