US4047642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spraying device
Assignee: Sterisol AB
•
Filing: 1974-03-21
•
Granted: 1977-09-13
•
Expires: 1994-03-21
Abstract
Abstract A spraying device comprises an outer compressible container and an inner compressible container. The outer container the interior of which having no communication with the surrounding atmosphere contains a preferably liquid active substance whereas the inner container initially contains air. The inner container communicates with the atmosphere via a narrow channel whereas the inner container is made permeable such that active substance may reach the inner container in small quantities. Squeezing of the outer container will thus generate a spray comprising air and active substance. The device may further have openings to enable air to be suck into the inner container after each use of the device.
Inventors
- 👤 Billy Nils Nilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:33
CPC Classifications
B; B05; B05B; B05B11/00; B05B11/01; B05B11/04; B05B11/048; A; A61; A61M; A61M11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
Spraying device comprising an outer receptacle having a flexible wall, an inner receptacle also having a flexible wall, said inner receptacle being housed in said outer receptacle, a liquid active substance being contained in said outer receptacle, said inner receptacle initially containing only air and communicating with the atmosphere via a narrow channel, said inner receptacle wall being imperforate and of a permeable material, and the permeable nature of said inner receptacle wall being the sole means for transferring the active substance to be dispensed from said outer receptacle to said inner receptacle whereby upon squeezing said outer receptacle said liquid therein is passed into said inner receptable for dispensing with the initial air charge in said inner receptacle.
Claim 2
Dependent Claim
119 words
Spraying device comprising an outer receptacle having a flexible wall, an inner receptacle also having a flexible wall, said inner receptacle being housed in said outer receptacle, a liquid active substance being contained in said outer receptacle, said inner receptacle initially containing only air and communicating with the atmosphere via a narrow channel, said inner receptacle wall being imperforate and of a permeable material, and the permeable nature of said inner receptacle wall being the sole means for transferring the active substance to be dispensed from said outer receptacle to said inner receptacle whereby upon squeezing said outer receptacle said liquid therein is passed into said inner receptable for dispensing with the initial air charge in said inner receptacle.
References Cited (Backward Citations)
US465484A
Cited
US2794579A
Cited
US3147888A
Cited
US3217931A
Cited
US3471064A
Cited
US3635375A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |