US3600224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for cleaning large surfaces
Assignee: FMC Corp
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Filing: 1968-11-18
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Granted: 1971-08-17
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Expires: 1988-11-18
Abstract
Abstract APPARATUS FOR CLEANING AIRPLANES OR AUTOMOBILIES IS DISCLOSED IN WHICH HIGH VELOCITY AIR AND A CLEANSING FLUID IS DISCHARGED THROUGH A PLURALITY OF CLOTH SLEEVES, THE OUTER ENDS OF WHICH BUFFET THE SURFACE TO BE CLEANED. FOR CLEANING AN AIRPLANE, A WHEELED CARRIAGE HAS A BLOWER WHICH IS CONNECTED BY DUCTING SUPPORTED BY A BOOM TO THE SLEEVES. FOR CLEANING AN AUTOMOBILE, WHIHC IS MOVED ALONG A PATH, A FRAME STRADDLES THE PATH AND SUPPORTS A PLURALITY OF BLOWERS. THE BLOWERS ARE CONNECTED BY DUCTING TO A PLURALITY OF CLOTH SLEEVES WHICH WHIP AGAINST THE SURFACE OF THE AUTOMOBILE AS AIR AND CLEANING FLUID ARE DISCHARGED OUT THE OPEN ENDS OF THE SLEEVES.
Inventors
- 👤 Robert E Stilwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:02
CPC Classifications
B; B60; B60S; B60S3/00; B60S3/04; B64; B64F; B64F5/00; B64F5/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |