US3712664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor cab
Assignee: Kloeckner Humboldt Deutz AG
•
Filing: 1970-09-16
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Granted: 1973-01-23
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Expires: 1990-09-16
Abstract
Abstract A tractor cab with a detachable roof section which is connected to upwardly extending arms of a safety device designed to protect the tractor driver in case of overturn of the tractor, said roof section having a hollow profile filled with foamed synthetic material.
Inventors
- 👤 O May
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:50
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/02; B60R21/13; B60R21/131; B62; B62D; B62D33/00; B62D33/06; B62D33/0617
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
179 words
A tractor having a body and a cab in which said cab comprises a roof section, arm means extending above head height of an operator upwardly from said tractor body on both sides thereof and detachably supporting said roof section, said roof section comprising self-contained frame means including hollow profile means formed by two longitudinal beams oppositely located and spaced relative to each other and two transverse beams oppositely located and spaced relative to each other so as to define free space therebetween and socket-shaped portions connected to the underside of said longitudinal beams and receiving the upper ends of said arm means for the connection of said roof portion to said arm means and also including axially preloaded longitudinal and transverse spar elements extending between and connected to said longitudinal and transverse beams and bowed upwardly with respect to said self-contained frame means, and cover means of foamed synthetic material having a weather-resistant external skin connected to said frame means and covering said spar elements to occupy and close said free space between said longitudinal and transverse beams.
Claim 2
Dependent Claim
179 words
A tractor having a body and a cab in which said cab comprises a roof section, arm means extending above head height of an operator upwardly from said tractor body on both sides thereof and detachably supporting said roof section, said roof section comprising self-contained frame means including hollow profile means formed by two longitudinal beams oppositely located and spaced relative to each other and two transverse beams oppositely located and spaced relative to each other so as to define free space therebetween and socket-shaped portions connected to the underside of said longitudinal beams and receiving the upper ends of said arm means for the connection of said roof portion to said arm means and also including axially preloaded longitudinal and transverse spar elements extending between and connected to said longitudinal and transverse beams and bowed upwardly with respect to said self-contained frame means, and cover means of foamed synthetic material having a weather-resistant external skin connected to said frame means and covering said spar elements to occupy and close said free space between said longitudinal and transverse beams.
Claim 3
Dependent Claim
17 words
A tractor according to claim 1 in which said foamed synthetic material is soft elastic polyurethane foam.
Claim 4
Dependent Claim
38 words
A tractor according to claim 1 in which said frame means are provided with overhangs which project beyond said transverse beams to the front and back of the tractor for protection in case of overturn of the tractor.
Claim 5
Dependent Claim
18 words
A tractor according to claim 3 in which the overhangs are formed by extensions of said longitudinal beams.
Claim 6
Dependent Claim
17 words
A tractor according to claim 3 which includes adjustable sun shields which are mounted on said overhangs.
Claim 7
Dependent Claim
37 words
A tractor according to claim 1 in which said frame means are provided with overhangs which respectively project to both sides of the tractor beyond the longitudinal beams for protection in case of overturn of the tractor.
Claim 8
Dependent Claim
18 words
A tractor according to claim 6 in which said overhangs are formed by extensions of said transverse beams.
Claim 9
Dependent Claim
17 words
A tractor according to claim 6 which includes adjustable sun shields which are mounted on said overhangs.
Claim 10
Dependent Claim
26 words
A tractor according to claim 1 in which said weather-resistant outer skin is a foil of synthetic material which is connected to said foamed synthetic material.
References Cited (Backward Citations)
US2805887A
Cited
US2911232A
Cited
US3068043A
Cited
US3244251A
Cited
US3451715A
Cited
US3561816A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |