Patent US3851342A successfully refreshed from Google Patents.
US3851342A
Expired / Lapsed
US
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Hydraulic pulse, scale-blocked-pipe cleaner
Assignee: Individual
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Filing: 1973-05-18
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Granted: 1974-12-03
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Expires: 1993-05-18
Abstract
Abstract A cylindrical vessel has a multiple part bellows positioned axially therein. An axially positioned rod extends into the vessel and through the bellows from one end and is attached to the other end of the bellows. The end of the rod exterior of the vessel is connected to a crank driven by a variable speed motor. Piping connects the interior of the vessel with a hot water pipe to be cleaned of scale. By expanding and contracting the bellows, impulses are applied to the water which act to remove the scale from the pipe.
Inventors
- 👤 C Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:46
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/032; B08B9/0321; E; E03; E03C; E03C1/00; E03C1/12; E03C1/30; E03C1/304; F; F16; F16K; F16K51/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
200 words
In an apparatus for cleaning scale from the inside of a water pipe having water therein, said apparatus comprising an impulse generator for producing periodic positive and negative water pulses, means for connecting the impulse generator to the pipe for free communication between the impulse generator and the water in said pipe so that the water in the pipe is pulsed positively and negatively whereby the pipe is cleaned by said pulses in conjunction with the abrasive action of the loosened scale in said pipe, the improvement wherein said generator comprises: a closed vessel defining a chamber in communication with said pipe; expansile means within said chamber for changing the volume of water within the chamber as said means expands and contracts, said expansile means defining an enclosed interior space having fluid therein, the exterior of the expansile means being in contact with the water in said chamber, means communicating with the interior space of the expansile means and the exterior of said chamber for permitting the fluid to flow in and out of said expansile means as the expansile means expands and contracts; and power means connected to said expansile means to periodically expand and contract said expansile means.
Claim 2
Dependent Claim
200 words
In an apparatus for cleaning scale from the inside of a water pipe having water therein, said apparatus comprising an impulse generator for producing periodic positive and negative water pulses, means for connecting the impulse generator to the pipe for free communication between the impulse generator and the water in said pipe so that the water in the pipe is pulsed positively and negatively whereby the pipe is cleaned by said pulses in conjunction with the abrasive action of the loosened scale in said pipe, the improvement wherein said generator comprises: a closed vessel defining a chamber in communication with said pipe; expansile means within said chamber for changing the volume of water within the chamber as said means expands and contracts, said expansile means defining an enclosed interior space having fluid therein, the exterior of the expansile means being in contact with the water in said chamber, means communicating with the interior space of the expansile means and the exterior of said chamber for permitting the fluid to flow in and out of said expansile means as the expansile means expands and contracts; and power means connected to said expansile means to periodically expand and contract said expansile means.
Claim 3
Dependent Claim
29 words
In an apparatus as set forth in claim 1, including control means connected to said power means for adjusting the rate at which said expansile means expands and contracts.
Claim 4
Dependent Claim
39 words
In an apparatus as set forth in claim 2, wherein said chamber has an uppermost part, and including an air bleeding device connected to said vessel and communicating with said uppermost part for removing air accumulations from said part.
Claim 5
Dependent Claim
99 words
In an apparatus as set forth in claim 3, including conduit means connected to said vessel and having a portion extending from said vessel and adapted to be connected to said pipe for supplying said water communication therebetween, a drain connection, a drain valve, said conduit means extending from said portion to said valve and then from the valve to said drain connection, a pressure relief valve in said conduit means upstream of said drain valve and having a discharge connection, and a liquid conduit extending from said discharge connection to said conduit means downstream of said drain valve.
Claim 6
Dependent Claim
59 words
In an apparatus as set forth in claim 4, including a pressure gauge connected in communication with the water in said apparatus to indicate the pulses in the water, said air bleeding device being connected to discharge into said conduit means downstream of said drain valve, said conduit means all being at a lower elevation than said uppermost part.
Claim 7
Dependent Claim
95 words
In an apparatus as set forth in claim 5, including a housing, said vessel, said power means, and all of said conduit means except for said drain and pipe connections being within said housing, said control means and said gauge being exposed at the top of said housing, including operating means connected to said drain valve and having a handle exposed at the top of the housing, said air bleeding device including a valve having a handle exposed at the top of the housing, said housing having wheels on which it may be moved about.
Claim 8
Dependent Claim
50 words
In an apparatus as set forth in claim 6, wherein said expansile means comprises a bellows device having two ends, one end bearing against a part of the vessel, said power means being connectEd to the other end to move said other end toward and away from said one end.
Claim 9
Dependent Claim
63 words
In an apparatus as set forth in claim 7, wherein said power means includes a rod extending through the side of said vessel, said one end and the interior of said bellows device and being connected to the other end of the bellows device, and crank means connected to said rod at the end thereof externally of said vessel for reciprocating said rod.
Claim 10
Dependent Claim
17 words
In an apparatus as set forth in claim 1, wherein said expansile means comprises a bellows device.
Claim 11
Dependent Claim
46 words
In an apparatus as set forth in claim 9, wherein said bellows device has two ends, one end bearing against a part of the vessel, said power means being connected to the other end to move said other end toward and away from said one end.
Claim 12
Dependent Claim
64 words
In an apparatus as set forth in claim 10, wherein said power means includes a rod extending through the side of said vessel, said one end and the interior space of said bellows device and being connected to the other end of the bellows device, and crank means connected to said rod at the end thereof externally of said vessel for reciprocating said rod.
Claim 13
Dependent Claim
86 words
In an apparatus as set forth in claim 11, wherein said vessel is cylindrical about an axis, said rod being axially positioned, said bellows device comprising a plurality of individual bellows and a plurality of annular connector members alternating with the individual bellows, said connector members being journaled on said rod, and an annular cap member at said other end and secured to said rod, means interconnecting said cap member and the adjacent end of said vessel and guiding said cap for movement along said axis.
Claim 14
Dependent Claim
37 words
In an apparatus as set forth in claim 12, wherein said chamber has an uppermost part, and including an air bleeding device connected to said vessel and communicating with said uppermost part for removing air accumulations therefrom.
Claim 15
Dependent Claim
99 words
In an apparatus as set forth in claim 12, including conduit means connected to said vessel and having a portion extending from said vessel and adapted to be connected to said pipe for supplying said water communication therebetween, a drain connection, a drain valve, said conduit means extending from said portion to said valve and then from the valve to said drain connection, a pressure relief valve in said conduit means upstream of said drain valve and having a discharge connection, and a liquid conduit extending from said discharge connection to said conduit means downstream of said drain valve.
Claim 16
Dependent Claim
55 words
In an apparatus as set forth in claim 11, wherein said one end of the bellows device is unitary with the adjacent end of the vessel, and said means for permitting fluid to flow in and out of said bellows device comprises an air passageway extending through said unitary end of the bellows and vessel.
Claim 17
Dependent Claim
42 words
In an apparatus as set forth in claim 9, wherein said bellows device comprises a plurality of individual bellows and a plurality of annular connector members, with a connector member being positioned between two bellows, said bellows being formed of stainless steel.
Claim 18
Dependent Claim
99 words
In an apparatus as set forth in claim 1, including conduit means connected to said vessel and having a portion extending from said vessel and adapted to be connected to said pipe for supplying said water communication therebetween, a drain connection, a drain valve, said conduit means extending from said portion to said valve and then from the valve to said drain connection, a pressure relief valve in said conduit means upstream of said drain valve and having a discharge connection, and a liquid conduit extending from said discharge connection to said conduit means downstream of said drain valve.
Claim 19
Dependent Claim
71 words
In an apparatus as set forth in claim 17, including a pressure gauge connected in communication with the water in said apparatus to indicate the pulses in the water, and an air bleeding device connected to said vessel and to said conduit means downstream of said drain valve for bleeding air from said vessel to saId drain connection, said conduit means all being at a lower elevation than said uppermost part.
Claim 20
Dependent Claim
95 words
In an apparatus as set forth in claim 18, including a housing, said vessel, said power means, and all of said conduit means except for said drain and pipe connections being within said housing, said control means and said gauge being exposed at the top of said housing, including operating means connected to said drain valve and having a handle exposed at the top of the housing, said air bleeding device including a valve having a handle exposed at the top of the housing, said housing having wheels on which it may be moved about.
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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |