Patent US4223702A successfully refreshed from Google Patents.
US4223702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drain line for recreational vehicles
Assignee: Individual
•
Filing: 1978-12-26
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Granted: 1980-09-23
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Expires: 1998-12-26
Abstract
Abstract A telescoping drain line for connecting recreational vehicles to a sewage system has telescoping rigid wall drain pipes having a plurality of pipe sections telescoping one within the other. A flexible hose extends through the telescoping pipes and out each end thereof and has means for attaching to a recreational vehicle drain at one end and into a sewage line opening at the opposite end thereof. The flexible hose is attached at each end of the telescoping rigid wall drain pipe to prevent the flexible pipe from collapsing or coming out of the rigid pipes. The flexible pipe will fold within the telescoping pipe for storage of the drain line.
Inventors
- 👤 James Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:24
CPC Classifications
E; E03; E03F; E03F1/00; E03F1/008; F; F16; F16L; F16L11/00; F16L11/04; F16L11/12; F16L7/00; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6855; Y10T137/6899; Y10T137/6918; Y10T137/6932
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
98 words
A telescoping drain line for recreational vehicles, or the like, comprising in combination: a telescoping rigid wall drain pipe having a plurality of sections telescoping one within the other; a flexible hose extending through said telescoping rigid wall drain pipe for contracting and expanding with the telescoping of said telescoping rigid drain pipe; and means for attaching said flexible hose to at least two telescoping rigid wall pipe sections between the ends of said flexible hose, whereby said flexible hose will expand or contract inside said telescoping rigid wall drain pipe responsive to the telescoping of said pipe.
Claim 2
Dependent Claim
98 words
A telescoping drain line for recreational vehicles, or the like, comprising in combination: a telescoping rigid wall drain pipe having a plurality of sections telescoping one within the other; a flexible hose extending through said telescoping rigid wall drain pipe for contracting and expanding with the telescoping of said telescoping rigid drain pipe; and means for attaching said flexible hose to at least two telescoping rigid wall pipe sections between the ends of said flexible hose, whereby said flexible hose will expand or contract inside said telescoping rigid wall drain pipe responsive to the telescoping of said pipe.
Claim 3
Dependent Claim
53 words
The apparatus in accordance with claim 1, in which the means for attaching said flexible hose to said telescoping rigid wall pipe sections includes a spring loaded arcuate band positioned inside said flexible hose for expanding said flexible hose against the interior wall of one section of said telescoping rigid wall drain pipe.
Claim 4
Dependent Claim
21 words
The apparatus in accordance with claim 2, in which said flexible hose has a drain line fitting on one end thereof.
Claim 5
Dependent Claim
22 words
The apparatus in accordance with claim 3, in which said flexible hose has a sewer inlet fitting on the other end thereof.
Claim 6
Dependent Claim
21 words
The apparatus in accordance with claim 4, in which said telescoping rigid wall drain pipe has a plurality of tubular sections.
Claim 7
Dependent Claim
37 words
The apparatus in accordance with claim 5, in which the largest tubular section of said telescoping rigid wall drain pipe has an annular flange on one end thereof directed towards the elongated axis of said tubular section.
Claim 8
Dependent Claim
74 words
The apparatus in accordance with claim 6, in which the plurality of tubular sections of said telescoping rigid wall drain pipe includes a second tubular section telescopically mounted in the said largest tubular section and said second tubular section has an annular flange flanged away from the elongated axis thereof, whereby said annular flanges on said largest tubular member and said second tubular section will intersect to prevent the separation of said tubular sections.
Claim 9
Dependent Claim
17 words
The apparatus in accordance with claim 7, in which each intersecting tubular section has intersecting annular flanges.
Claim 10
Dependent Claim
32 words
The apparatus in accordance with claim 8, in which said telescoping rigid wall drain pipe is made of a polymer material, and said flexible hose is made of a second polymer material.
References Cited (Backward Citations)
US778936A
Cited
US1299441A
Cited
FR723766A
Cited
US2095702A
Cited
DE817543C
Cited
US2848265A
Cited
US2902298A
Cited
US3520725A
Cited
US3760430A
Cited
US3730228A
Cited
US3809348A
Cited
US4133347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-23 | 1984-03-24 | 1984-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-23 | 1988-03-24 | 1988-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-23 | 1992-03-24 | 1992-09-23 | $7700.00 | Window Closed / Lapsed |