Patent US4520524A successfully refreshed from Google Patents.
US4520524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remotely controlled hydraulic cleaner apparatus
Assignee: Insituform Netherlands BV
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Filing: 1984-03-26
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Granted: 1985-06-04
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Expires: 2004-03-26
Abstract
Abstract A remotely controlled hydraulically operated cleaner apparatus for use in cleaning the interior of a conduit or pipe comprises a control means located outside of the conduit for generating control signals for controlling the operation of the cleaner apparatus. A source of pressurized hydraulic fluid is connected to valve means for receiving and distributing hydraulic fluid in accordance with control signals received from the control means. The apparatus further includes a housing containing a hydraulically powered motor adapted to receive hydraulic fluid from the valve means. An adjustable cleaner tool means is provided for cooperating with the motor for rotation relative to the conduit, the cleaner tool means being adjustable in order to maintain engagement with the interior walls of the conduit. The housing is supported within the conduit by an adjustable support means and a hydraulically actuated means is provided for receiving hydraulic fluid from the valve means for adjusting the adjustable support means to maintain the housing generally radially centered within the conduit. In the presently preferred embodiment, the cleaner tool means and the support means are concurrently adjustable and cooperate to have the same relative outer boundary to engage the conduit.
Inventors
- 👤 Charles A. Long, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:52
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/043; B08B9/047; B08B9/049; B08B9/051
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
208 words
A remotely controlled, hydraulically operated cleaner apparatus for use in cleaning the interior of a conduit comprising: control means located outside of the conduit for generating control signals for controlling the operation of the cleaner apparatus; a source of pressurized hydraulic fluid; valve means for receiving both pressurized hydraulic fluid from the fluid source and control signals from the control means and for distributing the received hydraulic fluid in accordance with the received control signals; a housing; a hydraulically powered motor within the housing, said motor receiving hydraulic fluid from the valve means for operation thereof; adjustable cleaner tool means cooperating with the motor for rotation relative to the conduit upon operation of the motor, said cleaner tool means being adjustable to maintain engagement with the interior walls of the conduit; adjustable support means for supporting the housing within the conduit; hydraulically actuated means for receiving hydraulic fluid from the valve means, said hydraulically actuated means including means for adjusting the adjustable support means to maintain the housing generally radially centered within the conduit whereby the housing is moved along the conduit with the motor in operation so that the cleaner tool means rotate while engaging in the interior conduit walls for cleaning the interior of the conduit.
Claim 2
Dependent Claim
208 words
A remotely controlled, hydraulically operated cleaner apparatus for use in cleaning the interior of a conduit comprising: control means located outside of the conduit for generating control signals for controlling the operation of the cleaner apparatus; a source of pressurized hydraulic fluid; valve means for receiving both pressurized hydraulic fluid from the fluid source and control signals from the control means and for distributing the received hydraulic fluid in accordance with the received control signals; a housing; a hydraulically powered motor within the housing, said motor receiving hydraulic fluid from the valve means for operation thereof; adjustable cleaner tool means cooperating with the motor for rotation relative to the conduit upon operation of the motor, said cleaner tool means being adjustable to maintain engagement with the interior walls of the conduit; adjustable support means for supporting the housing within the conduit; hydraulically actuated means for receiving hydraulic fluid from the valve means, said hydraulically actuated means including means for adjusting the adjustable support means to maintain the housing generally radially centered within the conduit whereby the housing is moved along the conduit with the motor in operation so that the cleaner tool means rotate while engaging in the interior conduit walls for cleaning the interior of the conduit.
Claim 3
Dependent Claim
79 words
The apparatus as recited in claim 1 wherein the source of pressurized fluid comprises: a hydraulic fluid reservoir located within the conduit, the reservoir containing a quantity of hydraulic fluid; and a hydraulic pump located within the conduit, the pump including an intake side which is connected by a fluid conduit to the reservoir for receiving hydraulic fluid therefrom and an output side which is connected by a fluid conduit to the valve means for supplying pressurized fluid thereto.
Claim 4
Dependent Claim
24 words
The apparatus as recited in claim 2 wherein the source of pressurized fluid further comprises an electric motor drivingly coupled to the hydraulic pump.
Claim 5
Dependent Claim
28 words
The apparatus as recited in claim 3 wherein the reservoir, the pump and the electric motor are generally cylindrical and positioned end to end along a common axis.
Claim 6
Dependent Claim
95 words
The apparatus as recited in claim 1 wherein the valve means comprises: manifold means including an inlet port for receiving the pressurized fluid from the fluid source, an outlet port for transmitting return fluid to the fluid source and a plurality of fluid transfer ports for transmitting pressurized hydraulic fluid to and receiving return hydraulic fluid from the hydraulically powered motor and the hydraulically actuated means; and valves for selectively directing the hydraulic fluid between the manifold means inlet and outlet ports and the manifold means transfer ports in accordance with the received control signals.
Claim 7
Dependent Claim
21 words
The apparatus as recited in claim 5 wherein the control signals are electrical and the valves comprise electrically operated solenoid valves.
Claim 8
Dependent Claim
40 words
The apparatus as recited in claim 5 further including conduit means connected to the manifold means fluid transfer ports for conducting hydraulic fluid between the manifold means and the motor, and between the manifold means and the hydraulically actuated means.
Claim 9
Dependent Claim
13 words
The apparatus as recited in claim 1 wherein the housing is generally cylindrical.
Claim 10
Dependent Claim
46 words
The apparatus as recited in claim 1 wherein the hydraulically actuated means also includes means for adjusting the adjustable cleaner tool means to maintain the cleaner tool in engagement with the interior walls of the conduit to compensate for variations in the diameter of the conduit.
Claim 11
Dependent Claim
57 words
The apparatus as recited in claim 9 wherein the hydraulically actuated means comprises a hydraulic cylinder secured to the housing, the hydraulic cylinder including a piston and piston rod adapted for translation within the cylinder in accordance with hydraulic fluid received from the valve means; and an actuator member connected to the piston rod for translation therewith.
Claim 12
Dependent Claim
35 words
The apparatus as recited in claim 10 wherein the housing is generally cylindrical and the actuator member is generally cylindrical with an outer diameter at least slightly less than the inner diameter of the housing.
Claim 13
Dependent Claim
31 words
The apparatus as recited in claim 1 further including an elongated drive shaft connected to the motor, the adjustable cleaner tool means being connected to the drive shaft for rotation therewith.
Claim 14
Dependent Claim
89 words
The apparatus as recited in claim 12 wherein the adjustable cleaner tool means comprises: a cleaner tool; an elongated support arm pivotally connected to the drive shaft for rotation therewith, the cleaner tool being secured to one end of the support arm; and a linking member pivotally connected to the support arm and to the hydraulically actuated means whereby actuation of the hydraulically actuated means moves the linking member to pivot the support arm to adjust the position of the cleaner tool relative to the interior of the conduit.
Claim 15
Dependent Claim
24 words
The apparatus as recited in claim 1 wherein the adjustable support means comprises a plurality of elongated axially extending skids disposed around the housing.
Claim 16
Dependent Claim
27 words
The apparatus as recited in claim 14 wherein the skids are adapted for radial movement with respect to the housing to engage the interior of the conduit.
Claim 17
Dependent Claim
19 words
The apparatus as recited in claim 15 wherein all of the skids move concurrently radially inwardly or radially outwardly.
Claim 18
Dependent Claim
37 words
The apparatus as recited in claim 14 wherein said hydraulically actuated means includes at least two generally parallel, axially spaced support members supporting each of said skids and which extend through suitably sized openings within the housing.
Claim 19
Dependent Claim
58 words
The apparatus as recited in claim 17 wherein each of the support members includes a laterally extending guide rod and further including at least one linking member connected to the hydraulically actuated means for axial movement with respect to the housing, the linking member including angled camming means for engaging the guide rod for moving the support member.
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) | 1988-06-03 | 1988-12-03 | 1989-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-03 | 1992-12-03 | 1993-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-03 | 1996-12-03 | 1997-06-04 | $7700.00 | Window Closed / Lapsed |