US3938535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube cleaning device
Assignee: MAINTECH INTERNATIONAL Inc A CORP OF TX
•
Filing: 1974-06-10
•
Granted: 1976-02-17
•
Expires: 1994-06-10
Abstract
Abstract A tube cleaning device including a water lance and a movable carriage with a driving mechanism for extending and retracting the lance, lance guides and a device for supplying water under pressure to the lance; the driving mechanism being located close to the lance tip when the lance is in its retracted position.
Inventors
- 👤 Robert R. Cradeur
- 👤 John E. Cardone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:21
CPC Classifications
F; F28; F28G; F28G1/00; F28G1/16; F28G1/163; B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/032; B08B9/0321; B08B9/0323; B08B9/04; B08B9/043; B08B9/0433; F28G15/00; F28G15/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
114 words
A tube cleaning device, comprising: at least one water jet lance, means for extending and retracting said lance, support means for said lance including an elongated slotted hollow member in which said lance is slidably positioned therein to prevent bending collapse of said lance when subjected to end loading, and means for supplying water under pressure to said lance, said water supply means including a manifold block having means therewith for distributing said pressurized water to said lance and a duct mounted with said manifold block and said lance for conducting said pressurized water therebetween, wherein said elongated slotted hollow member having a slot formed therein slidably receives said duct adjacent thereto said slot.
Claim 2
Dependent Claim
114 words
A tube cleaning device, comprising: at least one water jet lance, means for extending and retracting said lance, support means for said lance including an elongated slotted hollow member in which said lance is slidably positioned therein to prevent bending collapse of said lance when subjected to end loading, and means for supplying water under pressure to said lance, said water supply means including a manifold block having means therewith for distributing said pressurized water to said lance and a duct mounted with said manifold block and said lance for conducting said pressurized water therebetween, wherein said elongated slotted hollow member having a slot formed therein slidably receives said duct adjacent thereto said slot.
Claim 3
Dependent Claim
24 words
A tube cleaning device according to claim 1, wherein said support means further includes: a tray for supporting said elongated slotted hollow member therewith.
Claim 4
Dependent Claim
26 words
The tube cleaning device according to claim 2, further including: a carriage mounted for movement on said tray for supporting said manifold block for movement therewith.
Claim 5
Dependent Claim
119 words
A tube cleaning device, comprising: a frame including opposing channel members adapted for alignment with the tubes of a heat exchanger or the like; a tray mounted with said frame, said tray having a plurality of support tubes mounted therewith, said support tubes having slots extending longitudinally thereof; a carriage mounted on said channels for movement along said channels; a manifold mounted for movement with said carriage; and a plurality of water jet lances mounted in said support tubes and affixed to said manifold through a plurality of ducts which extend from said manifold through said slots into fluid connection with said lances whereby said lances are mounted for movement with respect to said tray and said support tubes.
Claim 6
Dependent Claim
119 words
A tube cleaning device, comprising: a frame including opposing channel members adapted for alignment with the tubes of a heat exchanger or the like; a tray mounted with said frame, said tray having a plurality of support tubes mounted therewith, said support tubes having slots extending longitudinally thereof; a carriage mounted on said channels for movement along said channels; a manifold mounted for movement with said carriage; and a plurality of water jet lances mounted in said support tubes and affixed to said manifold through a plurality of ducts which extend from said manifold through said slots into fluid connection with said lances whereby said lances are mounted for movement with respect to said tray and said support tubes.
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) | 1979-02-16 | 1979-08-18 | 1980-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-16 | 1983-08-18 | 1984-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-16 | 1987-08-18 | 1988-02-17 | $7700.00 | Window Closed / Lapsed |