Patent US3840033A successfully refreshed from Google Patents.
US3840033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water pressure drain cleaning device
Assignee: Individual
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Filing: 1972-04-21
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Granted: 1974-10-08
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Expires: 1992-04-21
Abstract
Abstract A unitary, tubular, resilient material body is generally cylindrical forwardly to a generally conical, forward nose portion with the nose portion having a restricted central opening therethrough surrounded by a thickened wall part. Thus, with a rearward portion of the body secured by a hose coupling to a water pressure hose and the assembly inserted into a drain pipe, the thickened wall part at the restricted opening of the body nose portion controls expansion of the body against the interior of the drain pipe sealing off water backflow and ejecting a stream of water to break up drain pipe blockage and debris and cause the same to flow down the drain pipe. Also, a further thickened body wall section immediately forwardly of the hose coupling and body material engagement rearwardly of an outer sleeve of the hose coupling may be included to prevent disengagement of the body during the water pressure expansion thereof.
Inventors
- 👤 B Warsinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:43
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/10; E; E03; E03C; E03C1/00; E03C1/12; E03C1/30; E03C1/304
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
171 words
In a water pressure drain cleaning device of the type for attachment to a water pressure hose and insertion into a drain pipe; the combination of: a unitary, resilient material, tubular body of generally circular cross section throughout terminating forwardly in an inwardly extending nose portion, said body nose portion having a generally axial opening formed generally centrally therethrough, said body in unexpanded condition having a generally uniform internal diameter throughout forwardly to said nose portion with said nose portion being generally conical, said body internal diameter in unexpanded condition being in a proportion in an order of between eight and ten to one relative to an average diameter of said nose portion opening, a thickened wall part at said body nose portion immediately surrounding said nose portion opening restricting and controlling expansion of said body nose portion at said opening relative to a major remainder of said body; and coupling means secured to a rearward portion of said body for attaching said body rearward portion to a water pressure hose.
Claim 2
Dependent Claim
171 words
In a water pressure drain cleaning device of the type for attachment to a water pressure hose and insertion into a drain pipe; the combination of: a unitary, resilient material, tubular body of generally circular cross section throughout terminating forwardly in an inwardly extending nose portion, said body nose portion having a generally axial opening formed generally centrally therethrough, said body in unexpanded condition having a generally uniform internal diameter throughout forwardly to said nose portion with said nose portion being generally conical, said body internal diameter in unexpanded condition being in a proportion in an order of between eight and ten to one relative to an average diameter of said nose portion opening, a thickened wall part at said body nose portion immediately surrounding said nose portion opening restricting and controlling expansion of said body nose portion at said opening relative to a major remainder of said body; and coupling means secured to a rearward portion of said body for attaching said body rearward portion to a water pressure hose.
Claim 3
Dependent Claim
64 words
A water pressure drain cleaning device as defined in claim 1 in which a thickened wall part is formed in said body immediately forward of said coupling means restricting expansion of said body immediately forward of said coupling means relative to a major remainder of said body to reduce forces between said body and coupling means tending to separate the same during body expansion.
Claim 4
Dependent Claim
70 words
A water pressure drain cleaning device as defined in claim 1 in which said coupling means includes rigid inner and outer sleeves within and over said body rearward portion compressing said body rearward portion therebetween, a rearward terminal part of said body rearward portion extending rearwardly along said inner sleeve and expanding outwardly against a rearward end of said outer sleeve increasing axial engagement between said body and coupling means.
Claim 5
Dependent Claim
50 words
A water pressure drain cleaning device as defined in claim 1 in which said body between said coupling means and said nose portion has axially spaced, circumferential ribs on an outer surface thereof engaging an inner surface of said drain pipe during body expansion reducing axial expansion of said body.
Claim 6
Dependent Claim
124 words
A water pressure drain cleaning device as defined in claim 1 in which a thickened wall part is formed in said body immediately forward of said coupling means restricting expansion of said body immediately forward of said coupling means relative to a major remainder of said body to reduce forces between said body and coupling means tending to separate the same during body expansion; and in which said coupling means includes rigid inner and outer sleeves within and over said body rearward portion compressing said body rearward portion therebetween, a rearward terminal part of said body rearward portion extending rearwardly along said inner sleeve and expanding outwardly against a rearward end of said outer sleeve increasing axial engagement between said body and coupling means.
Claim 7
Dependent Claim
163 words
A water pressure drain cleaning device as defined in claim 1 in which a thickened wall part is formed in said body immediately forward of said coupling means restricting expansion of said body immediately forward of said coupling means relative to a major remainder of said body to reduce forces between said body and coupling means tending to separate the same during body expansion; in which said coupling means includes rigid inner and outer sleeves within and over said body rearward portion compressing said body rearward portion therebetween, a rearward Terminal part of said body rearward portion extending rearwardly along said inner sleeve and expanding outwardly against a rearward end of said outer sleeve increasing axial engagement between said body and coupling means; and in which said body between said coupling means and said nose portion has axially spaced, circumferential ribs on an outer surface thereof engaging an inner surface of said drain pipe during body expansion reducing axial expansion of said body.
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) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |