Patent US3934992A successfully refreshed from Google Patents.
US3934992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Truck air filter
Assignee: Individual
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Filing: 1974-06-19
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Granted: 1976-01-27
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Expires: 1994-06-19
Abstract
Abstract An air filter for use on a truck or similar system includes a cylindrical side wall which is an integral part of or adapted to be mounted on a tank, such as the fuel tank of the truck as the principal means of support. The housing includes a front wall with a removable closure for permitting access to the interior to facilitate removal or replacement of the filter element without having to remove the inlet or outlet air conduits.
Inventors
- 👤 Terrence V. Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:52
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/0027; B01D46/003; B01D46/0031; B01D46/24; F; F02; F02M; F02M35/00; F02M35/10; F02M35/10242; F02M35/10262; F02M35/16; F02M35/164; B01D2279/00; B01D2279/60; F02M35/02; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
191 words
In combination with an enclosed tank mounted on a motor vehicle and having horizontally extending wall means of closed cross section, an air filter system for delivering air to a discharge air conduit comprising a housing including a side wall connected to and supported by said tank, said side wall of said housing having the same cross section as said wall means of said tank and being a horizontal extension thereof; a vertical rear wall interposed between said filter system and said tank, and a front wall spaced laterally from said rear wall and including an access aperture; inlet air conduit means communicating through said housing for delivering air thereto; baffle means for intercepting air delivered from said inlet conduit for distributing the same within said housing; a plenum within said housing; air filter element means within said housing for filtering air from said baffle means prior to its entering into said plenum; a front panel removably mounted to cover said access aperture in said front wall to permit access to said filter element means; and extension conduit means for communicating the interior of said plenum with said discharge air conduit.
Claim 2
Dependent Claim
191 words
In combination with an enclosed tank mounted on a motor vehicle and having horizontally extending wall means of closed cross section, an air filter system for delivering air to a discharge air conduit comprising a housing including a side wall connected to and supported by said tank, said side wall of said housing having the same cross section as said wall means of said tank and being a horizontal extension thereof; a vertical rear wall interposed between said filter system and said tank, and a front wall spaced laterally from said rear wall and including an access aperture; inlet air conduit means communicating through said housing for delivering air thereto; baffle means for intercepting air delivered from said inlet conduit for distributing the same within said housing; a plenum within said housing; air filter element means within said housing for filtering air from said baffle means prior to its entering into said plenum; a front panel removably mounted to cover said access aperture in said front wall to permit access to said filter element means; and extension conduit means for communicating the interior of said plenum with said discharge air conduit.
Claim 3
Dependent Claim
114 words
The apparatus of claim 1 wherein said filter element means comprise a pair of cylindrical filter elements located side-by-side with their axes extending horizontally and said baffle means comprises a pair of horizontally elongated baffles located beneath the opening of said inlet air conduit means and extending respectively about said filter elements for distributing said incoming air substantially along the length of said filter elements and on either side of said housing; said incoming air is forced between said housing and said baffles in two generally circular paths which come together beneath said elements whereby particles are forced to the outside of said housing and deposited beneath said elements as said paths come together.
Claim 4
Dependent Claim
31 words
The apparatus of claim 1 wherein said wall means of said tank and said side walls of said system each have a circular cross section and are continuous with each other.
Claim 5
Dependent Claim
58 words
The apparatus of claim 1 wherein said plenum is secured to said sidewall of said housing and comprises an enclosed chamber located adjacent said rear wall and including a forward wall including first aperture means for receiving air from said filter element means and second aperture means communicating the interior of said plenum with an extension conduit means.
Claim 6
Dependent Claim
180 words
In combination with a motor vehicle fuel tank with a horizontally elongated side wall of closed section, an air filter system comprising: a housing including a side wall extending laterally of and in cantilever relation with the side wall of said fuel tank, a vertical wall separating said filter system from said fuel tank, and a front wall, said housing including an access aperture, said side wall of said housing being an integral lateral extension of said side wall of said fuel tank; a cover panel removably secured to said housing adjacent said operative to close said access aperture; inlet air conduit means for delivering air into said filter system; outlet air conduit means for delivering air from within said filter system to the engine of said motor vehicle; a pair of filter elements removably mounted side-by-side within said housing and located adjacent said access aperture for convenience of replacement; and extension conduit means communicating air passing from said filter elements through said front wall of said housing and away from said fuel tank to said outlet air conduit means.
Claim 7
Dependent Claim
180 words
In combination with a motor vehicle fuel tank with a horizontally elongated side wall of closed section, an air filter system comprising: a housing including a side wall extending laterally of and in cantilever relation with the side wall of said fuel tank, a vertical wall separating said filter system from said fuel tank, and a front wall, said housing including an access aperture, said side wall of said housing being an integral lateral extension of said side wall of said fuel tank; a cover panel removably secured to said housing adjacent said operative to close said access aperture; inlet air conduit means for delivering air into said filter system; outlet air conduit means for delivering air from within said filter system to the engine of said motor vehicle; a pair of filter elements removably mounted side-by-side within said housing and located adjacent said access aperture for convenience of replacement; and extension conduit means communicating air passing from said filter elements through said front wall of said housing and away from said fuel tank to said outlet air conduit means.
Claim 8
Dependent Claim
73 words
The apparatus of claim 5 wherein said inlet air conduit is connected to deliver air through said horizontally elongated side wall of said filter housing and wherein said communicating means comprises a plenum secured to said side wall and provided with mounting means for holding said filter element means, and an extension conduit communicating with the interior of said plenum through said front wall of said housing to said outlet air conduit means.
Claim 9
Dependent Claim
39 words
The apparatus of claim 5 wherein said inlet air conduit communicates with a space between said plenum and said rear wall for routing incoming air downwardly beneath said filter element means before said air enters said filter element means.
Claim 10
Dependent Claim
83 words
The apparatus of claim 5 wherein said inlet air conduit delivers air to said housing above said filter element means; said system further comprising baffle means interposed between said inlet air conduit and said filter element means to cover the same and to route incoming air down around the sides of said filter element means before said air enters said filter element means, whereby centrifugal force and gravity assist to eliminate heavier matter from said air before it enters said filter element 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) | 1979-01-26 | 1979-07-28 | 1980-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-26 | 1983-07-28 | 1984-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-26 | 1987-07-28 | 1988-01-27 | $7700.00 | Window Closed / Lapsed |