S.a.m.m.-societe D'applications Des Machines Motrices

Societe D'applications Des Machines Motrices

Alkan

S.a.m.m.

S.a.m.m. - Societe D'applications De Machines Motrices

Philippe Joseph

Jean-Michel Perrochat

Jean Michel Perrochat

Jean-Pierre Mettei

Marquant Patrick

This device comprises an arm (15) for supporting the load, such as a roller member of a vehicle, articulated about a bearing axle (2), together with a resilient leaf (1) forming a spiral about the axle (2) and a cushioning strip (12) of an elastomeric material interposed between two consecutive turns (1c, 1d, 1e) of the leaf (1); the inner end of the leaf (1) is rigidly fixed to the bearing axle (2) and its outer end (1b) is fixed to the arm (15), these resilient members (1, 12) preferably being accommodated within the arm (15) in a leaktight housing 15a). Cooling element (14, 26) including a liquid which fills the housing (15a) to ensure the cooling of the suspension. The latter is entirely independent and of minimum bulk, and can be used in any terrain by virtue of the cooling element.

Device for the resilient and cushioned suspension of a load particularly

The damper comprises a fixed body (1A, 1B) provided with ports (3, 4) for the passage of hydraulic fluid, stacks (7) of flexible washers disposed in rigid deflectors (8) placed on each side of the body (1A, 1B) in facing relation to the ports (3, 4) and recesses and tubular inserts (5, 6) for allowing the passage of the fluid in only one direction for some ports (3) and in the opposite direction for the other ports (4). A disc (9) provided with at least two series of orifices (11, 12) having different diameters is disposed in the body. The orifices are arranged to be capable of coming into confronting relation with the ports (3, 4) of the body. The disc (9) is rotated through a given angle so as to place one of the series of orifices of the disc (9) in correspondence with the ports (3, 4) of the body. This arrangement permits adjusting the degree of damping so as to obtain the desired hardness or softness for the suspension in accordance with the utilization of the vehicle.

Damper for a hydropneumatic suspension element of a vehicle, and in

This unit is provided with two hydropneumatic jacks (2) having parallel vertical axes X--X and comprising bodies (5) adapted to be rigidly connected by a plate (3) and mounted slidably on rods (6) fixed to the chassis (7) of the vehicle. The plate (3) is sufficiently wide to allow if desired the passage of a transmission for the corresponding wheel. This arrangement improves the guiding of the wheels by holding them in fixed planes and enables them if desired to be made into driving and/or steered wheels.

Hydropneumatic suspension unit for wheeled vehicles, particularly

This valve comprises a tubular body (66) containing a hollow slide (68) mounted axially slidably in a sleeve (69), itself sliding in the body (66) along the axis (X--X) of the valve, a spring bearing on the body and pushing the slide (68) up against an annular end (73) of the sleeve (69), normally held by means of its opposite end (79) up against a cover (82) for closing the body (66) on the opposite side to its central orifice (67); the cover (82) and the sleeve (69) have radial ports (88, 81), the body (66) being contained in a tubular casing (34) having conduits (92, 96), fluid passages (89, 93, 94, 95, 40) also being provided to allow the valve to open in both directions as a result of the hydraulic pressure. This valve makes it possible to peak-limit the surplus hydraulic flow of a shock absorber (31), thus preventing the tailgating of the vehicle body at means vertical speeds under compression and making it possible under expansion, after the vehicle has passed over a hump, for the wheel to make contact with the ground again before the vehicle body.

Bidirectional quick-opening peak-limiting valve for a hydropneumatic

The valve comprises a hollow body (36, 37, 40) provided with a first inlet or outlet opening (38) and a second outlet or inlet opening (41) for a hydraulic fluid, and the following elements:

Rapidly opening peak-clipping valve for a hydropneumatic suspension for

The element comprises a tubular body connected to the hub of a wheel and pivotally connected to the base of the chassis (5) by an arm. This body is slidably mounted on a rod (4) pivotally connected to the chassis (5) of the vehicle, the tubular body containing a gas chamber (11) and a hydraulic liquid chamber (13) divided into two compartments by a central ring (25) fixed to the rod (4). According to the invention, there is provided a device (15) for drawing the hydraulic liquid and disposed outside the tubular body (2) which is slidably mounted on the rod (4) by two fluidtight bearings (42, 55) forming the ends of the hydraulic chamber (13) and spaced apart by a constant distance. The drawing device (15) permits the dissipation to the exterior of the hydraulic chamber (13) of the heat stored by the oil during the reciprocating motions of the suspension element and thus avoids the disadjustment of the ground clearance of the vehicle.

Hydropneumatic suspension element of a heavy vehicle or a landing set of

The corrector comprises a hydraulic distributor having a slide member (23) rotatively mounted in a body (39), the slide member (23) extending through a sleeve (41), a hydraulic circuit maintaining the ground clearance of the chassis of the vehicle being formed in the sleeve (41) and in the body (39), the hydraulic circuit maintaining the ground clearance at a pre-set value by the angular position of the sleeve (41) in the body (39), the slide member (23) being provided with means (34) for controlling the rotation of the slide member and associated with the chassis.

Ground clearance corrector for a suspension element of a heavy vehicle

The suspension element comprises an arm (1) through which extends a wheel stub-axle (2) of the vehicle which is rotatively mounted on a fixed part (3) integral with the chassis of the vehicle with interposition of bearing means between the fixed part (3) and the arm (1), a hydraulic chamber (5) being provided in the arm (1) and containing a slidable piston (7) on which is pivotally mounted a link (8) whose end opposed to the piston (7) is pivotally mounted on the fixed part (3). The bearing means comprise a bearing bush (23) surrounding the fixed part (3) and internally coated with a material for a high resistance dry sliding, the bush (23) being apertured for allowing the arm (1) to oscillate on each side of a lug (13) of the fixed part (3) which radially projects from the bush (23) and is pivotally mounted on the link (8).

Growing community of inventors

Carpentras, France

Philippe Joseph