US3812927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endless track type tractor
Assignee: Komatsu Ltd
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Filing: 1971-08-30
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Granted: 1974-05-28
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Expires: 1991-08-30
Abstract
Abstract An endless track type tractor which has a radiator mask projected forwardly at the central portion of one side edge of a rectangular plate to form a curved edge and having a central recessed portion continued from the curved edge, said mask being fixed to the front end of a cover forming an engine room.
Inventors
- 👤 R Kawamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:33
CPC Classifications
B; B62; B62D; B62D25/00; B62D25/08; B62D25/10; B60; B60K; B60K11/00; B60K11/08; B62D49/00; B62D49/04; B62D55/00; B62D55/06; B62D55/08; B62D55/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
202 words
An endless track-type tractor comprising a main frame, an engine supported by said framE, a radiator disposed forwardly from said engine, first cover means enclosing said engine and said radiator and having a substantially open rectilinear front surface substantially in parallel with said radiator, a power transmission mechanism operatively associated with and disposed rearwardly thereform, a radiator guard means formed as an extension of said first cover means, second cover means enclosing said power transmission mechanism, a fan for cooling said radiator disposed between said engine and said radiator and adapted to create air flow in the forward direction and a radiator mask providing an egress for the air flow generated by said fan covering said substantially open rectilinear front surface of said first cover means, said radiator mask being fixed at three side edges to said first cover means, with a fourth edge extending forwardly from said first cover means to form an opening communicating with and substantially perpendicular to the opening in said substantially open rectilinear front surface of said first cover means, and wherein said mask is projected forward of said first cover means to form a curved edge and a central recessed portion continuous from said curved edge.
Claim 2
Dependent Claim
202 words
An endless track-type tractor comprising a main frame, an engine supported by said framE, a radiator disposed forwardly from said engine, first cover means enclosing said engine and said radiator and having a substantially open rectilinear front surface substantially in parallel with said radiator, a power transmission mechanism operatively associated with and disposed rearwardly thereform, a radiator guard means formed as an extension of said first cover means, second cover means enclosing said power transmission mechanism, a fan for cooling said radiator disposed between said engine and said radiator and adapted to create air flow in the forward direction and a radiator mask providing an egress for the air flow generated by said fan covering said substantially open rectilinear front surface of said first cover means, said radiator mask being fixed at three side edges to said first cover means, with a fourth edge extending forwardly from said first cover means to form an opening communicating with and substantially perpendicular to the opening in said substantially open rectilinear front surface of said first cover means, and wherein said mask is projected forward of said first cover means to form a curved edge and a central recessed portion continuous from said curved edge.
Claim 3
Dependent Claim
30 words
An endless track-type tractor according to claim 1 wherein said radiator mask is fixed to the front end of said first cover means such that the communicating opening faces upwardly.
Claim 4
Dependent Claim
30 words
An endless track-type tractor according to claim 1 wherein said radiator mask is fixed to the front end of said first cover means such that the communicating opening faces downwardly.
Claim 5
Dependent Claim
24 words
An endless track-type tractor according to claim 1 wherein a sound insulating material is mounted on the inner surface of said first cover means.
Claim 6
Dependent Claim
195 words
An endless track-type tractor comprising a main frame, an engine supported by said frame, a radiator disposed forwardly from said engine, first cover means enclosing said engine and said radiator and having a substantially open rectilinear front surface substantially in parallel with said radiator, a power transmission mechanism operatively associated with and disposed rearwardly therefrom, second cover means enclosing said power transmission mechanism, a fan for cooling said radiator disposed between said engine and said radiator and adapted to create air flow in the forward direction, a radiator mask providing an egress for the air flow generated by said fan covering said substantially open rectilinear front surface of said first cover means, said radiator mask being fixed at three side edges to said first cover means, with a fourth edge extending forwardly from said first cover means to form an opening communicating with and substantially perpendicular to the opening in said substantially open rectilinear front surface of said first cover means, air inlet means provided in the rear of said second cover means, said first and second cover means forming a continuous air flow chamber for permitting the passage of air in the forward direction.
Claim 7
Dependent Claim
195 words
An endless track-type tractor comprising a main frame, an engine supported by said frame, a radiator disposed forwardly from said engine, first cover means enclosing said engine and said radiator and having a substantially open rectilinear front surface substantially in parallel with said radiator, a power transmission mechanism operatively associated with and disposed rearwardly therefrom, second cover means enclosing said power transmission mechanism, a fan for cooling said radiator disposed between said engine and said radiator and adapted to create air flow in the forward direction, a radiator mask providing an egress for the air flow generated by said fan covering said substantially open rectilinear front surface of said first cover means, said radiator mask being fixed at three side edges to said first cover means, with a fourth edge extending forwardly from said first cover means to form an opening communicating with and substantially perpendicular to the opening in said substantially open rectilinear front surface of said first cover means, air inlet means provided in the rear of said second cover means, said first and second cover means forming a continuous air flow chamber for permitting the passage of air in the forward direction.
Claim 8
Dependent Claim
33 words
An endless track-type tractor according to claim 5 further comprising a dashboard disposed behind said engine and above said power transmission mechanism, and a noise-shielding plate disposed between said dashboard and said engine.
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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) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |