US3719191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning system
Assignee: ATI Ladish Co Inc
•
Filing: 1971-02-04
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Granted: 1973-03-06
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Expires: 1991-02-04
Abstract
Abstract A single service cleaning system utilizes a motive tank within a rinse water tank. Pipe lines interconnect the tanks with each other and with the tank or product-pipeline to be cleaned, a supply pump being used to pump liquid under control of a burst valve to the tank lines to be cleaned, with a motive pump pumping motive fluid from the motive tank through an eductor to draw returned liquid from the tank to be cleaned for return into the motive tank and/or for discharge through a drain line. Steam may be admitted to the system prior to the liquid entering both pumps for raising the temperature of the water in the system. Chemicals may be selectively introduced into the feed line leading to the tank or product-pipeline to be cleaned and various valves control the flow for different cleaning cycles. There is also an air supply for blowing liquid out to evacuate the feed line.
Inventors
- 👤 R Zimmerly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:07
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/08; B08B9/093
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
160 words
A cleaning system for a service installation comprising: a rinse tank for a rinsing liquid, an outlet line from said rinse tank, a motive tank for said liquid, an outlet line leading from the motive tank, a feed line for conveying said liquid from the outlet line of the rinse tank to the service installation, a supply pump in said feed line, a return line adapted to return liquid from said service installation, an eductor having a suction opening connected to said return line, means including a motive pump for delivering liquid from said outlet line of said motive tank through said eductor to create a suction in said return line and draw liquid from the service installation, means for selectively delivering said motive liquid and returned liquid either back into said motive tank or to a point of drain, valve controlled means for delivering fresh water to said tanks, and valve controlled means for delivering chemicals to the system.
Claim 2
Dependent Claim
160 words
A cleaning system for a service installation comprising: a rinse tank for a rinsing liquid, an outlet line from said rinse tank, a motive tank for said liquid, an outlet line leading from the motive tank, a feed line for conveying said liquid from the outlet line of the rinse tank to the service installation, a supply pump in said feed line, a return line adapted to return liquid from said service installation, an eductor having a suction opening connected to said return line, means including a motive pump for delivering liquid from said outlet line of said motive tank through said eductor to create a suction in said return line and draw liquid from the service installation, means for selectively delivering said motive liquid and returned liquid either back into said motive tank or to a point of drain, valve controlled means for delivering fresh water to said tanks, and valve controlled means for delivering chemicals to the system.
Claim 3
Dependent Claim
160 words
A cleaning system for a service installation comprising: a rinse tank for a rinsing liquid, an outlet line from said rinse tank, a motive tank for said liquid, an outlet line leading from the motive tank, a feed line for conveying said liquid from the outlet line of the rinse tank to the service installation, a supply pump in said feed line, a return line adapted to return liquid from said service installation, an eductor having a suction opening connected to said return line, means including a motive pump for delivering liquid from said outlet line of said motive tank through said eductor to create a suction in said return line and draw liquid from the service installation, means for selectively delivering said motive liquid and returned liquid either back into said motive tank or to a point of drain, valve controlled means for delivering fresh water to said tanks, and valve controlled means for delivering chemicals to the system.
Claim 4
Dependent Claim
160 words
A cleaning system for a service installation comprising: a rinse tank for a rinsing liquid, an outlet line from said rinse tank, a motive tank for said liquid, an outlet line leading from the motive tank, a feed line for conveying said liquid from the outlet line of the rinse tank to the service installation, a supply pump in said feed line, a return line adapted to return liquid from said service installation, an eductor having a suction opening connected to said return line, means including a motive pump for delivering liquid from said outlet line of said motive tank through said eductor to create a suction in said return line and draw liquid from the service installation, means for selectively delivering said motive liquid and returned liquid either back into said motive tank or to a point of drain, valve controlled means for delivering fresh water to said tanks, and valve controlled means for delivering chemicals to the system.
Claim 5
Dependent Claim
29 words
A cleaning system as claimed in claim 1 in which the motive tank is smaller than and positioned within said rinse tank to be surrounded by the liquid therein.
Claim 6
Dependent Claim
64 words
A cleaning system as claimed in claim 2 in which there is means for heating the liquid being supplied to the system and motive tank whereby the surrounding water in the rinse tank is heated by contact with the motive tank to a temperature lower than the temperature in the motive tank to thereby eliminate the possibility of thermal shock in the service tank.
Claim 7
Dependent Claim
20 words
A cleaning system as claimed in claim 2 in which there is means for admitting steam to the system liquid.
Claim 8
Dependent Claim
27 words
A cleaning system as claimed in claim 1 in which there is a burst valve in the feed line between the supply pump and the service installation.
Claim 9
Dependent Claim
73 words
A cleaning system as claimed in claim 1 in which there is a valve controlling the flow of rinse liquid from the rinse tank, and wherein there is a connected valve controlling communication between the outlet line from the motive tank and the feed line for the service installation, said connected valves also providing for optional intercommunication between the outlet line from the rinse tank and the outlet line from the motive tank.
Claim 10
Dependent Claim
33 words
A cleaning system as claimed in claim 6 in which there is means for directing compressed air through the connected valves and into the feed line to blow liquid out of the latter.
Claim 11
Dependent Claim
43 words
A cleaning system as claimed in claim 1 in which there is a drain line and a combination drain and return valve for directing the flow of return liquid and motive liquid either back into the motive tank or into the drain line.
Claim 12
Dependent Claim
29 words
A cleaning system as claimed in claim 1 in which there is means for selectively directing compressed air into the feed line to blow liquid out of the latter.
References Cited (Backward Citations)
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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) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |