Patent US3791393A successfully refreshed from Google Patents.
US3791393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tank cleaning apparatus
Assignee: Sybron Transition Corp
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Filing: 1972-03-06
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Granted: 1974-02-12
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Expires: 1992-03-06
Abstract
Abstract Device for cleaning the interior of elongated tanks or tanks where access to the interior is limited consisting of a tank cleaning machine attached to a source of cleaning liquid. The tank cleaning machine is movably affixed to a track and drives along the track during the cleaning operation, the track extending through the area of the tank to be cleaned so that the cleaning operation extends to portions of tank interior where access from the outside is limited. An externally mounted gas tight winch is preferred as the drive means. A flexible hose provides connection between the tank cleaning machine and the source of cleaning liquid and the hose may be calibrated so that the position of the tank cleaning machine within the tank can be determined. Entry to the tank interior for mounting and dismounting the tank cleaning machine on the track is through an entry port located adjacent one end of the track.
Inventors
- 👤 D Baldwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:05
CPC Classifications
B; B63; B63B; B63B57/00; B63B57/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
94 words
Apparatus for the cleaning of the interior of a tank having an entry port comprising: a. elongate support means affixed to the interior of the roof of said tank extending substantially parallel with said roof within the tank over those parts of the tank to be cleaned, b. carriage means carrying a tank cleaning machine, said carriage means adapted to be carried by and moved along said support means, c. means for supplying cleaning liquid to said tank cleaning machine, d. means for inducing the movement of said carriage means along said support means.
Claim 2
Dependent Claim
94 words
Apparatus for the cleaning of the interior of a tank having an entry port comprising: a. elongate support means affixed to the interior of the roof of said tank extending substantially parallel with said roof within the tank over those parts of the tank to be cleaned, b. carriage means carrying a tank cleaning machine, said carriage means adapted to be carried by and moved along said support means, c. means for supplying cleaning liquid to said tank cleaning machine, d. means for inducing the movement of said carriage means along said support means.
Claim 3
Dependent Claim
35 words
Apparatus of claim 1, wherein at least one end of said elongate support means terminates adjacent said entry port in said tank for introducing and mounting thereon said carriage means and said tank cleaning machine.
Claim 4
Dependent Claim
67 words
Apparatus according to claim 1 in which said elongate support means comprises a flange and a central web extending upwardly therefrom and running along the length of said support means, and said carriage means includes at least one rotatably mounted roller carried by said flange on each side of said central web for movably supporting said carriage means and said tank cleaning means on said support means.
Claim 5
Dependent Claim
45 words
Apparatus according to claim 1 in which said elongate support means is an I-section rail, the upper and lower flange and central webb thereof defining a pair of channels running along the length of said rail and adapted to receive rollers of said carriage means.
Claim 6
Dependent Claim
87 words
The apparatus of claim 1 wherein means for supplying cleaning liquid to said tank cleaning machine comprises a flexible hose connected at one end to an external source of cleaning liquid and passing through said entry port and connected at its other end to said tank cleaning machine, said flexible hose having hose support means affixed thereto at spaced apart intervals along said hose length, said hose supporT means being adapted to be received by said elongate support means as said hose is extended into said tank.
Claim 7
Dependent Claim
23 words
The apparatus of claim 5, wherein said hose is calibrated for determination of the position of said tank cleaning machine within said tank.
Claim 8
Dependent Claim
58 words
The apparatus of claim 1, wherein said means for inducing movement of said carriage means and said tank cleaning machine comprises an externally mounted winch and cable, said cable communicating with the interior of said tank and being attached to said carriage means for effecting movement thereof along said support means responsive to the operation of said winch.
Claim 9
Dependent Claim
105 words
The apparatus of claim 1, wherein said means for inducing movement of said carriage means and said tank cleaning machine comprises a gas tight winch externally mounted in a gas tight manner on said tank over an aperture communicating with the interior of said tank, said winch and aperture positioned on said tank above the end of said elongate support means remote from said tank entry port, a winch cable leading from said winch and through said aperture being connected to said carriage means for moving said carriage means and said tank cleaning machine along said support means responsive to the operation of said winch.
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US2006709A
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US2024374A
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US3065760A
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US3625234A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |