Patent US3960238A successfully refreshed from Google Patents.
US3960238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound attenuating engine enclosure
Assignee: Caterpillar Inc
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Filing: 1975-04-30
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Granted: 1976-06-01
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Expires: 1995-04-30
Abstract
Abstract An engine enclosure is disclosed having improved sound attenuating capabilities. The enclosure includes side panels, a front and rear and top and bottom thereof which define the engine area. Doors in the side panels permit access to the engine compartment for service thereof. Sound attenuating material is fastened to the inside surfaces of the side panels, doors and rear fire wall members. Acoustic baffles cooperate with the attenuating material to attenuate noise emanating from the engine compartment. Openings in the members permit flow of air into the engine compartment to satisfy engine cooling requirements. Sealing means cooperating between adjoining members provide for further sound attenuation.
Inventors
- 👤 Randall D. McClure
- 👤 Jerry G. Marques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:55
CPC Classifications
B; B60; B60R; B60R13/00; B60R13/08; B60R13/0838; G; G10; G10K; G10K11/00; G10K11/16; B60R13/0884
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
164 words
A sound attenuating engine enclosure comprising: two side panels, front and rear portions, a hood member and a belly cover, said components defining generally an engine compartment and an engine heat exchanger and fan compartment; sealing means about the periphery of said side panels for forming a substantially airtight barrier therearound; said hood member being formed with a multiplicity of apertures formed therein substantially adjacent the fan compartment; air passage means in each of said side panels adjacent the fan compartment to permit air flow therethrough and access to the fan compartment; means in said side panels to permit access to the engine compartment; said front portion having air passage means therethrough; sound attenuating means secured to the inside surfaces of said side panels and front portion; and a belly cover seal supported by said belly cover, said seal being complementally formed to the shape of the belly area wherein said seal engages the belly housing when said belly cover is installed in place.
Claim 2
Dependent Claim
164 words
A sound attenuating engine enclosure comprising: two side panels, front and rear portions, a hood member and a belly cover, said components defining generally an engine compartment and an engine heat exchanger and fan compartment; sealing means about the periphery of said side panels for forming a substantially airtight barrier therearound; said hood member being formed with a multiplicity of apertures formed therein substantially adjacent the fan compartment; air passage means in each of said side panels adjacent the fan compartment to permit air flow therethrough and access to the fan compartment; means in said side panels to permit access to the engine compartment; said front portion having air passage means therethrough; sound attenuating means secured to the inside surfaces of said side panels and front portion; and a belly cover seal supported by said belly cover, said seal being complementally formed to the shape of the belly area wherein said seal engages the belly housing when said belly cover is installed in place.
Claim 3
Dependent Claim
19 words
The invention as set forth in claim 1 in which said belly cover further comprises air passage means therethrough.
Claim 4
Dependent Claim
41 words
The invention as set forth in claim 2 in which said access means are pivotally mounted doors, said doors having sound attenuating material secured to the inside surface thereof wherein said doors permit access to the interior of the engine enclosure.
Claim 5
Dependent Claim
25 words
The invention as set forth in claim 3 in which said side panel air passage means includes hinged doors having sound attenuating louvers mounted therein.
Claim 6
Dependent Claim
25 words
The invention as set forth in claim 4 further comprising boot means secured to said front portion and substantially enclosing the pump drive shaft area.
References Cited (Backward Citations)
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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) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |