US4718142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas driven pipe cleaner and reel
Assignee: DW TOOL Inc A CORP OF MISSOURI
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Filing: 1986-07-31
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Granted: 1988-01-12
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Expires: 2006-07-31
Abstract
Abstract A gas driven cleaning apparatus for clearing clogged pipe lines or the like. The apparatus is comprised of a gas driven nozzle having specially devised gas passages for aiding the propulsion of the nozzle through and clearing the clogged area. A flexible hose is connected to the nozzle and a high pressure gas cylinder supported on a two wheel hand cart. The hand cart has a main hose reel and handle for a first gas line and a portable hand reel which supports a second gas line connected to the main reel line and the nozzle at opposite ends. The hand reel may be carried apart from the hand cart to difficultly accessible or remote areas not approachable by the hand cart. In a modification the nozzle is provided with a rotary head element powered by the high pressure gas.
Inventors
- 👤 Ronald L. Wahlers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:44
CPC Classifications
F; F28; F28G; F28G9/00; B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/049; B08B9/0495
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
212 words
Apparatus for clearing an obstruction of clogged discrete particles in a pipeline or the like, said apparatus comprising a flexible hose connected at one end to a source of high pressure gas, said hose being freely insertable into said pipeline and being connected at a second end to an obstruction clearing nozzle, means for regulating the gas source to a selcected pressure, said nozzle having means for connecting it at a rear end to said hose and having a forward portion adapted to contact said obstruction forcefully to dislodge said particles and said nozzle having a gas introduction passage at the rear communicating with said hose and rearwardly directed aspirating gas passage means creating a rearwardly directed gas flow for carrying dispersed particles from the clogged area, said nozzle having a forwardly directed configuration with a transverse rear base and a plenum chamber communicating with said gas introduction passage and said aspirating gas passage means, said nozzle having a stationary rear base connected to a separate rotary cone-shaped head and said head having gas driven powering means, said head being further provided with comminuting elements on the cone-shaped surface and said gas aspirating gas passage means comprising a plurality of circumferentially disposed gas passages extending from said plenum chamber through said base.
Claim 2
Dependent Claim
212 words
Apparatus for clearing an obstruction of clogged discrete particles in a pipeline or the like, said apparatus comprising a flexible hose connected at one end to a source of high pressure gas, said hose being freely insertable into said pipeline and being connected at a second end to an obstruction clearing nozzle, means for regulating the gas source to a selcected pressure, said nozzle having means for connecting it at a rear end to said hose and having a forward portion adapted to contact said obstruction forcefully to dislodge said particles and said nozzle having a gas introduction passage at the rear communicating with said hose and rearwardly directed aspirating gas passage means creating a rearwardly directed gas flow for carrying dispersed particles from the clogged area, said nozzle having a forwardly directed configuration with a transverse rear base and a plenum chamber communicating with said gas introduction passage and said aspirating gas passage means, said nozzle having a stationary rear base connected to a separate rotary cone-shaped head and said head having gas driven powering means, said head being further provided with comminuting elements on the cone-shaped surface and said gas aspirating gas passage means comprising a plurality of circumferentially disposed gas passages extending from said plenum chamber through said base.
Claim 3
Dependent Claim
94 words
The apparatus of claim 2 in which an axial gas passage means is in communication with said high pressure gas at one end and extends at another end through a forward nose portion of said nozzle to facilitate the dispersion of said clogged particles and provide a back flow to carry said particles rearwardly of the nozzle away from the clogged area and past a restricted passage defined by an enlarged base of the cone-shaped forward portion of the nozzle and the interior of the pipeline where a high velocity aspirating flow is created.
Claim 4
Dependent Claim
30 words
The apparatus of claim 3 in which a rearwardly extending hollow shank portion extends from the transverse base and is insertable in fixed relation within an end of said hose.
Claim 5
Dependent Claim
182 words
Apparatus for clearing an obstruction of clogged discrete particles in a pipeline or the like, said apparatus comprising a flexible hose connected at one end to a source of high pressure gas, said hose being freely insertable into said pipeline and being connected at a second end to an obstruction clearing nozzle, means for regulating the gas source to a selected pressure, said nozzle having means for connecting it at a rear end to said hose and having a forward portion adapted to contact said obstruction forcefully to dislodge said particles and said nozzle having a gas introduction passage at the rear communicating with said hose and rearwardly directed aspirating gas passage means creating a rearwardly directed gas flow for carrying dispersed particles from the clogged area, a mobile cart being provided for support of high pressure gas cylinders comprising the source of said high pressure gas, said cart having a vertical frame supporting a main hose reel and said cart further removably supporting a portable auxiliary feeder hose reel which can be hand carried to a site removed from said cart.
Claim 6
Dependent Claim
182 words
Apparatus for clearing an obstruction of clogged discrete particles in a pipeline or the like, said apparatus comprising a flexible hose connected at one end to a source of high pressure gas, said hose being freely insertable into said pipeline and being connected at a second end to an obstruction clearing nozzle, means for regulating the gas source to a selected pressure, said nozzle having means for connecting it at a rear end to said hose and having a forward portion adapted to contact said obstruction forcefully to dislodge said particles and said nozzle having a gas introduction passage at the rear communicating with said hose and rearwardly directed aspirating gas passage means creating a rearwardly directed gas flow for carrying dispersed particles from the clogged area, a mobile cart being provided for support of high pressure gas cylinders comprising the source of said high pressure gas, said cart having a vertical frame supporting a main hose reel and said cart further removably supporting a portable auxiliary feeder hose reel which can be hand carried to a site removed from said cart.
Claim 7
Dependent Claim
44 words
The apparatus of claim 4, in which an axial gas passage means is in communication with said high pressure gas at one end and extends at another end through a forward nose portion of said nozzle to facilitate the dispersion of said clogged particles.
Claim 8
Dependent Claim
61 words
The apparatus of claim 4 in which said high pressure cylinder is connected to a hose reel and handle means are provided for reeling in and out a main hose from said main reel, means connecting said main hose to said auxiliary feeder hose reel and said feeder hose reel having handle means for carrying it to a clogged pipeline site.
Claim 9
Dependent Claim
55 words
The apparatus of claim 6 in which said feeder reel is further provided with a hand crank for reeling in and out said feeder hose and said vertical frame has a hook member receiving the auxiliary reel in a supported relation whereby the cart and main and auxiliary reels may be moved as a unit.
Claim 10
Dependent Claim
25 words
The apparatus of claim 4 in which said feeder hose has a diameter and stiffness such that it may be manually fed into a pipe.
Claim 11
Dependent Claim
53 words
The apparatus of claim 4 in which said feeder hose has a diameter and stiffness such that it may be manually fed into a pipe, said nozzle having a forwardly directed configuration with a transverse rear base and a plenum chamber communicating with said gas introduction passage and said aspirating gas passage means.
Claim 12
Dependent Claim
36 words
The apparatus of claim 1 in which said plenum chamber is situated within said stationary rear base and is provided with separate outlets communicating with said aspirating gas passage means and said gas driven powering means.
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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) | 1991-01-11 | 1991-07-13 | 1992-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-11 | 1995-07-13 | 1996-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-11 | 1999-07-13 | 2000-01-12 | $7700.00 | Window Closed / Lapsed |