US3776358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cab for agricultural tractors and the like
Assignee: Individual
•
Filing: 1972-04-12
•
Granted: 1973-12-04
•
Expires: 1992-04-12
Abstract
Abstract A cab for the suppression and control of dust protects the operator while furnishing adequate ventilation and cooling and assures good visibility by directing continuous streams of air over the exterior faces of all windows. The cab features hollow walls at the sides and rear and an overhead fan compartment with ventilation controls. The fan may be driven from the tractor hydraulic system.
Inventors
- 👤 C Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:30
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00357; B60H1/00378
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
178 words
A cab for self-propelled agricultural machines comprising a cab body adapted to fit over the operator''s seat and adjacent controls of said machine, said cab body adapted to be fixedly secured to said machine and said cab body having hollow side walls which are at least in part transparent, means forming a fan chamber at the top of the cab body having an air intake and said chamber communicating with the interiors of said hollow side walls so that air may be forced downwardly therethrough, air discharge nozzle means on the lower end of the cab body communicating with at least some of the hollow side wall interiors and directing air onto the traction elements of the machine to prevent such elements from carrying dust and onto the engine of the machine to clear the engine of dust, and additional nozzle means on the cab body receiving air from the interiors of the hollow side walls and delivering the air across the outer surfaces of the transparent portions of the side walls to clear the same of dust.
Claim 2
Dependent Claim
178 words
A cab for self-propelled agricultural machines comprising a cab body adapted to fit over the operator''s seat and adjacent controls of said machine, said cab body adapted to be fixedly secured to said machine and said cab body having hollow side walls which are at least in part transparent, means forming a fan chamber at the top of the cab body having an air intake and said chamber communicating with the interiors of said hollow side walls so that air may be forced downwardly therethrough, air discharge nozzle means on the lower end of the cab body communicating with at least some of the hollow side wall interiors and directing air onto the traction elements of the machine to prevent such elements from carrying dust and onto the engine of the machine to clear the engine of dust, and additional nozzle means on the cab body receiving air from the interiors of the hollow side walls and delivering the air across the outer surfaces of the transparent portions of the side walls to clear the same of dust.
Claim 3
Dependent Claim
35 words
The structure of claim 1, and a rotary fan in said fan chamber, and fluid motor means drivingly connected to said fan and adapted for connection with a conventional pressurized fluid system of said machine.
Claim 4
Dependent Claim
77 words
The structure of claim 1, and said additional nozzle means comprising a scoop louver on each side and rear wall of the cab body including an upwardly directed scoop blade projecting into the air stream in the interior of said wall and a downwardly directed louver on the outside of said wall directing air downwardly over the outer surface of said wall after said air is diverted from the air stream in the interior of the wall.
Claim 5
Dependent Claim
37 words
The structure of claim 1, and said cab body being box-like and rectangular in horizontal cross section and having four hollow side walls, and means forming an operator''s door on one side wall of the cab body.
Claim 6
Dependent Claim
58 words
The structure of claim 1, and said means forming said fan chamber comprising a hollow shroud on the top of the cab body, and a vertical axis rotary bladed fan mounted in the interior of said shroud, the margins of said shroud communicating with the tops of said hollow cab body side walls and delivering air downwardly therethrough.
Claim 7
Dependent Claim
43 words
The structure of claim 1, and a ceiling panel in the interior of the cab body constituting the bottom wall of said fan chamber and having adjustable ventilator means mounted thereon in ready reach of an operator of said machine in said cab.
Claim 8
Dependent Claim
25 words
The structure of claim 6, and a filtering element on said ventilator means enabling the machine operator to receive clean air from said fan chamber.
Claim 9
Dependent Claim
64 words
The structure of claim 1, and said air discharge nozzle means on the lower end of the cab body comprising a pair of divergent nozzle extensions depending from the rear of the cab body and receiving air directly from the interior of the hollow rear wall of the cab body and funneling such air in two streams onto the traction elements of the machine.
Claim 10
Dependent Claim
38 words
The structure of claim 8, and said air discharge nozzle means additionally comprising a divided nozzle on the front of the cab body directing two streams of air forwardly and generally horizontally over the engine of said machine.
Claim 11
Dependent Claim
12 words
The structure of claim 9, and said machine comprising a farm tractor.
Claim 12
Dependent Claim
70 words
The structure of claim 10, and said tractor comprising a wheeled tractor including large rear wheels, and the side walls of the cab body being contoured at their bottoms to fit around the top portions of the rear wheels in closely spaced relation so that air from the interiors of the side walls may be directed onto the tops of said wheels around a considerable portion of the wheel circumferences.
Claim 13
Dependent Claim
160 words
A cab for tractors and the like comprising a cab body unit attachable fixedly to a tractor and covering the operator''s seat and adjacent tractor controls, said cab body having hollow front, side and rear walls which are at least in part transparent, a covering shroud forming the top of the cab body and having a fan chamber communicating with the tops of the interiors of said hollow walls, said shroud having an air intake opening and an adjustable filtered air outlet leading into the chamber of the cab occupied by the operator, the lower ends of the hollow cab body walls forming air outlets to direct air downwardly around the perimeter of the cab body to control and suppress dust, and air deflector means on the cab body for diverting air from the interiors of said hollow walls and directing such diverted air downwardly over the outer faces of the transparent portions of said walls to clean the same.
Claim 14
Dependent Claim
160 words
A cab for tractors and the like comprising a cab body unit attachable fixedly to a tractor and covering the operator''s seat and adjacent tractor controls, said cab body having hollow front, side and rear walls which are at least in part transparent, a covering shroud forming the top of the cab body and having a fan chamber communicating with the tops of the interiors of said hollow walls, said shroud having an air intake opening and an adjustable filtered air outlet leading into the chamber of the cab occupied by the operator, the lower ends of the hollow cab body walls forming air outlets to direct air downwardly around the perimeter of the cab body to control and suppress dust, and air deflector means on the cab body for diverting air from the interiors of said hollow walls and directing such diverted air downwardly over the outer faces of the transparent portions of said walls to clean the same.
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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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |