Patent US3779330A successfully refreshed from Google Patents.
US3779330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Belly protective pan for tractor engine
Assignee: Individual
•
Filing: 1972-04-20
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Granted: 1973-12-18
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Expires: 1992-04-20
Abstract
Abstract A protective shield or pan is removably mounted beneath the undercarriage of a tractor engine, enveloping the exposed surfaces of the oil pan beneath the tractor engine. It is guided along a longitudinal track assembly mounted to the tractor undercarriage. It is releasably secured by interlocking engagement of pivoted stops mounted along the interior sides of the belly pan and cooperative receiving slots formed through the supporting track assembly. The stops are externally operated by pivotal movement of a pulling hook at the outer end of the pan.
Inventors
- 👤 M Longpre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:38
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/084; B62D55/0845; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0848; Y10T292/0849; Y10T292/0853
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
192 words
A belly pan assembly for protecting the oil pan of a tractor engine, comprising: a pair of transversely spaced longitudinal track elements fixed to the undercarriage of a tractor alongside opposite sides of the engine oil pan; an upwardly-open protective belly pan having complementary slide elements fixed thereto, said belly pan being mounted to the tractor undercarriage by sliding engagement with said track elements to enable the pan to be moved longitudinally forward beneath the tractor undercarriage to provide access to the engine oil pan; a pulling hook mounted to a front end of the belly pan; said hook having an integral shaft rotatably mounted to the belly pan about its shaft axis between a locking angular position in which the hook extends in an upward vertical orientation and an angularly spaced unlocking angular position in which the hook is angularly displaced from the upward vertical orientation; and a releasable locking means operatively connected to said shaft and responsive to the angular position of tbe shaft about its axis for preventing sliding movement of the belly pan from beneath the engine oil pan when the shaft is in its unlocking angular position.
Claim 2
Dependent Claim
192 words
A belly pan assembly for protecting the oil pan of a tractor engine, comprising: a pair of transversely spaced longitudinal track elements fixed to the undercarriage of a tractor alongside opposite sides of the engine oil pan; an upwardly-open protective belly pan having complementary slide elements fixed thereto, said belly pan being mounted to the tractor undercarriage by sliding engagement with said track elements to enable the pan to be moved longitudinally forward beneath the tractor undercarriage to provide access to the engine oil pan; a pulling hook mounted to a front end of the belly pan; said hook having an integral shaft rotatably mounted to the belly pan about its shaft axis between a locking angular position in which the hook extends in an upward vertical orientation and an angularly spaced unlocking angular position in which the hook is angularly displaced from the upward vertical orientation; and a releasable locking means operatively connected to said shaft and responsive to the angular position of tbe shaft about its axis for preventing sliding movement of the belly pan from beneath the engine oil pan when the shaft is in its unlocking angular position.
Claim 3
Dependent Claim
39 words
The apparatus set out in claim 7 wherein the releasable locking means comprises a movable abutment mounted to the belly pan and engageable with said track elements to thereby selectively fix the belly pan relative to the track elements.
Claim 4
Dependent Claim
79 words
The apparatus set out in claim 7 wherein the track elements and slide elements have complementary slots formed therein that are aligned in registry with each other when the belly pan is supported beneath the engine oil pan by said track elements at a selected longitudinal location along the tractor undercarriage; said locking means including interconnected stops movable in unison into the slots when so aligned to thereby prevent relative movement between the track elements and the belly pan.
Claim 5
Dependent Claim
108 words
The apparatus set out in claim 7 wherein the track elements and slide elements have complementary slots formed therein that are aligned in registry with each other when the belly pan is supported beneath the engine oil pan by said track elements at a selected longitudinal location along the tractor undercarriage; said locking means including a plurality of pivoted stops respectively aligned with the slots on said slide elements, said stops being movable about longitudinal axes at the sides of the belly pan in unison into the aligned slots of the track elements and slide elements to thereby prevent relative movement between the track elements and belly pan.
Claim 6
Dependent Claim
66 words
The apparatus set out in claim 10 wherein said locking means includes linkage means operatively connected between the shaft and said stops for moving the stops into the aligned slots of the track elements and slide elements when said shaft is turned to its locking angular position and for moving the stops from within the slots when said shaft is turned to its unlocking angular position.
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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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |