Patent US3889772A successfully refreshed from Google Patents.
US3889772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tail pipe system
Assignee: HAROLD SCHNAIR DELTA QUALITY
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Filing: 1973-11-21
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Granted: 1975-06-17
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Expires: 1993-11-21
Abstract
Abstract A tail pipe system used with a plurality of different makes and models of vehicles for conveying engine exhaust gases from a point located to the front of the rear wheel axle to a point adjacent to the rear of the vehicle.
Inventors
- 👤 Charles N Kelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:52
CPC Classifications
B; B60; B60K; B60K13/00; B60K13/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49398
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
298 words
A motor vehicle tailpipe for use in conveying exhaust gases from a point located to the front of the rear axle up over and to a point to the rear of the rear axle, comprising in combination: a first portion of curved conduit having a first end for extending from a point to the front of the rear axle and a second end extending at an obtuse angle with respect to said first end in a direction toward the rear axle; a second portion of curved conduit for extending from the first portion vertically up over the rear axle a sufficient height to clear movement of the rear axle with respect to the frame to a point to the rear of the rear axle, said second portion having a first end for connection to said second end of said first portion with the second end of said second portion extending at an acute angle with respect to said first end of said second portion; a third portion of curved conduit for extending to the rear of said rear axle, said third portion having a first end for connection to said second end of said second portion wIth the second end of said third portion extending at an obtuse angle with respect to the first end of said third portion; and enlarged ends formed on said portions releasably connecting said second end of said first portion to said first end of said second portion in a gas-tight telescoping joint and releasably connecting said second end of said second portion to the first end of said third portion in a gas-tight telescoping joint, whereby the relative angular extension of said first end of said first portion with respect to the second end of said third portion can be selectively varied.
Claim 2
Dependent Claim
298 words
A motor vehicle tailpipe for use in conveying exhaust gases from a point located to the front of the rear axle up over and to a point to the rear of the rear axle, comprising in combination: a first portion of curved conduit having a first end for extending from a point to the front of the rear axle and a second end extending at an obtuse angle with respect to said first end in a direction toward the rear axle; a second portion of curved conduit for extending from the first portion vertically up over the rear axle a sufficient height to clear movement of the rear axle with respect to the frame to a point to the rear of the rear axle, said second portion having a first end for connection to said second end of said first portion with the second end of said second portion extending at an acute angle with respect to said first end of said second portion; a third portion of curved conduit for extending to the rear of said rear axle, said third portion having a first end for connection to said second end of said second portion wIth the second end of said third portion extending at an obtuse angle with respect to the first end of said third portion; and enlarged ends formed on said portions releasably connecting said second end of said first portion to said first end of said second portion in a gas-tight telescoping joint and releasably connecting said second end of said second portion to the first end of said third portion in a gas-tight telescoping joint, whereby the relative angular extension of said first end of said first portion with respect to the second end of said third portion can be selectively varied.
Claim 3
Dependent Claim
17 words
The tailpipe of claim 1 additionally comprising attachment means for attaching a muffler to said first portion.
Claim 4
Dependent Claim
20 words
The tailpipe of claim 1 wherein said first portion comprises a length of conduit with an approximate 120* bend therein.
Claim 5
Dependent Claim
20 words
The tailpipe of claim 1 wherein said second portion comprises a length of conduit with an approximate 50* bend therein.
Claim 6
Dependent Claim
19 words
The tailpipe of claim 1 wherein said third portion comprises a length of conduit with a 110* bend therein.
Claim 7
Dependent Claim
21 words
The tailpipe of claim 1 additionally comprising a fourth portion extending from said third portion to the rear of said vehicle.
Claim 8
Dependent Claim
14 words
The tailpipe of claim 1 additionally comprising adjustable clamp means on said telescoping joints.
Claim 9
Dependent Claim
35 words
The tailpipe of claim 1 wherein said first portion is curved at a 120* angle and said second portion is curved at a 50* angle and said third portion is curved at a 110* angle.
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) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |