Abstract: A selective filtration system for an operator cab attached to an agricultural vehicle. A HVAC unit supplies conditioned air to an operator space selectively from a CAT 4 filter and a CAT 2 filter. A pressurization blower and two way valve controls flow from the CAT 4 filter to the HVAC unit. Control of flow or isolation of the CAT 2 filter is provided by pressure variations within the system. The CAT 4 filter and CAT 2 filter are isolated from the ambient when they are not in use.

Abstract: A selective filtration system for an operator cab attached to an agricultural vehicle. A HVAC unit supplies conditioned air to an operator space selectively from a CAT 4 filter and a CAT 2 filter. A pressurization blower and two way valve controls flow from the CAT 4 filter to the HVAC unit. Control of flow or isolation of the CAT 2 filter is provided by pressure variations within the system. The CAT 4 filter and CAT 2 filter are isolated from the ambient when they are not in use by valves. A calibrated orifice enables positive pressurization to the CAT 2 filter to hold the valves closed.

Abstract: A selective filtration system for an operator cab attached to an agricultural vehicle. A HVAC unit supplies conditioned air to an operator space selectively from a CAT 4 filter and a CAT 2 filter. A pressurization blower and two way valve controls flow from the CAT 4 filter to the HVAC unit. Control of flow or isolation of the CAT 2 filter is provided by pressure variations within the system. The CAT 4 filter and CAT 2 filter are isolated from the ambient when they are not in use.

Abstract: A selective filtration system for an operator cab attached to an agricultural vehicle. A HVAC unit supplies conditioned air to an operator space selectively from a CAT 4 filter and a CAT 2 filter. A pressurization blower and two way valve controls flow from the CAT 4 filter to the HVAC unit. Control of flow or isolation of the CAT 2 filter is provided by pressure variations within the system. The CAT 4 filter and CAT 2 filter are isolated from the ambient when they are not in use by valves. A calibrated orifice enables positive pressurization to the CAT 2 filter to hold the valves closed.

Abstract: A vehicle having an openable body panel and a latch with a pivotable release lever for holding the panel in a closed position is provided with an actuator for remotely releasing the latch. The actuator comprises a rod coupled at one end to the release lever of the latch. The other end of the 0rod is connected to an element which may include a ball rigidly secured to the end of the force transmitting member that is slidably received within a tubular socket fitted within a hole in the body panel. The element is recessed within the socket so as not to protrude beyond the outer surface of the body panel.

Abstract: A device manually controls the acceleration system of a tractor having both a foot pedal accelerator and a hand lever accelerator which can be positioned at different heights above the ground. The acceleration control mechanism includes a first lever hinged at a first end to a fixed pin; a first tie connecting a second end of the first lever to the acceleration system; and a second lever hinged at a first end to the fixed pin. The control mechanism also includes a pedal, which when activated rotates the first lever in a given direction to control the acceleration system by means of the first tie. A third lever is fitted to a fixed structure and can be activated manually to control the acceleration system by rotating the second lever in the aforementioned direction. A second tie connects the third lever to the second lever which rotates the first lever in the aforementioned direction to also control the acceleration system by manually activating the third lever.