Abstract: An adjustable suspension system for an operator platform that is pivotally attached at a pivot axis to a chassis of a turf maintenance vehicle. The system may include a suspension apparatus selectively attachable either to a support area of the chassis, or to the platform such that the apparatus is located between the support area and the platform. The suspension apparatus may be attachable at either a first location or a second location, wherein the suspension apparatus is spaced-apart from the pivot axis: by a first distance when in the first location; and by a second distance, different than the first distance, when in the second location. The suspension apparatus may include a support member and resilient element(s) attached to the support member.

Abstract: An adjustable suspension system for an operator platform that is pivotally attached at a pivot axis to a chassis of a turf maintenance vehicle. The system may include a suspension apparatus selectively attachable either to a support area of the chassis, or to the platform such that the apparatus is located between the support area and the platform. The suspension apparatus may be attachable at either a first location or a second location, wherein the suspension apparatus is spaced-apart from the pivot axis: by a first distance when in the first location; and by a second distance, different than the first distance, when in the second location. The suspension apparatus may include a support member and resilient element(s) attached to the support member.

Abstract: An isolation system for use in damping and isolating low frequency oscillations and shock loads between two members. An exemplary application is a seat isolation system for use with a vehicle such as a lawn mower. The seat isolation system may include two or more isolators interposed between a chassis of the vehicle, and a seat (e.g., operator's seat). The isolators may permit attenuation of shock or low frequency oscillation inputs via damping and isolation in both vertical and horizontal (fore-and-aft and side-to-side) directions. In some embodiments, the isolators include an elastomeric element that provides the seat with six degrees of freedom.

Abstract: An isolation system for use in damping and isolating low frequency oscillations and shock loads between two members. An exemplary application is a seat isolation system for use with a vehicle such as a lawn mower. The seat isolation system may include two or more isolators interposed between a chassis of the vehicle, and a seat (e.g., operator's seat). The isolators may permit attenuation of shock or low frequency oscillation inputs via damping and isolation in both vertical and horizontal (fore-and-aft and side-to-side) directions. In some embodiments, the isolators include an elastomeric element that provides the seat with six degrees of freedom.

Abstract: A decompression valve assembly is normally open thereby allowing thermal pressure build-up in an auxiliary circuit to be dissipated via a bleed path. During operation, the bleed path is sealed by a check valve, whereby high pressure flow can be fully directed to the work tool powered by the auxiliary circuit, for high system efficiency. In addition, a velocity fuse feature limits the rate of flow to the bleed path, thereby to allow for controlled release of pressure from the auxiliary circuit, as is desirable to protect against a rapidly falling load.

Abstract: A coupling includes a male half and a female half, where the female half has a fitting rigidly fixed to a stationary member such as an agricultural tractor. The male half can be coupled within the female half. When the male and female halves are coupled together, a valve assembly in the female half allows fluid flow through the coupling. When the male half is pulled out of the female half, the male half automatically disconnects from the female half. When the male half is removed, the valve assembly closes to prevent fluid flow through the coupling. The male half also automatically disconnects when the fluid pressure in the fluid system increases above a predetermined amount. In either case, a coupler body within the fitting moves against a centering spring to allow the male half to be removed from the female half. The selection of an appropriate centering spring determines the breakaway and overpressure release force.