Abstract:
A bidirectional self-contained end-of stroke snubbing device (20) includes a housing (21), a rod (22) movable relative to the housing, a single fluid-filled variable-volume chamber (23) communicating with a fluid sump (24) through an orifice (65), and a lost-motion mechanism for selectively reducing the volume of the chamber proximate either end of the stroke of the rod-like member. The mechanism will force fluid from the chamber through the orifice to decelerate and cushion movement of the rod-like member relative to the housing proximate either end of its stroke.
Abstract:
A substantially pressure balanced twin poppet-type direct-acting two-way control valve comprising arcuately movable first and second closure parts cooperating with stationary seats so constructed that highly effective sealing is provided between cooperating closure part and seat when the valve is closed.
Abstract:
This invention relates to a method and apparatus for controlling the angular deflection of the thrust vector of a fluid stream discharged from the divergent section of a supersonic nozzle. In particular, the stream discharging from the nozzle is deflected by a fluid jet which is injected at a substantially constant velocity regardless of the amount of fluid injected.
Abstract:
A mobile charging system comprising a mobile platform configured to be readily moved from a first location to a second location, an ammonia storage tank supported by the mobile platform, an ammonia cracker connected to the storage tank and supported by the mobile platform, a hydrogen fuel cell connected to the ammonia cracker and supported by the mobile platform, an electric storage connected to the hydrogen fuel cell and supported by the mobile platform, charging electronics connected to the electric storage and supported by the mobile platform, and at least one DC to DC electronic charging port supported by the mobile platform and configured to connect to the charging port of an electric vehicle.
Abstract:
A voltage converter (110, 210) having a first bidirectional voltage line (112, 212), a second bidirectional voltage line (114, 214), a power storage element (L1) arranged between the first bidirectional voltage line and the second bidirectional voltage line, a switch element electronically coupled to the power storage element, a controller (141) for controlling the switch, and the controller configured and arranged to adjust a current flow between the first voltage line and the second voltage line such that a voltage level on the second bidirectional voltage line is substantially maintained at a target DC voltage.
Abstract:
A linear actuator comprising a shaft and a nut that translates within a linear range of motion in response to relative rotation between the nut and shaft, a stop positioned at a travel limiting position and having an inner portion connected to the shaft, a radially compliant outer portion axially overlapping the inner portion and configured to rotate relative to the inner portion, and a cam roller portion disposed radially between the inner and outer portions and configured to move relative to a neutral orientation in response to relative rotation between the inner and outer portions, and the outer portion configured to radially bias the cam roller portion towards the neutral orientation; wherein rotation of the outer portion caused by the nut rotating into the outer portion provides an outward radial load at the cam roller portion on the outer portion that is absorbed by the outer portion.
Abstract:
A motion simulator comprising a base (102), a platform (104), and a plurality of linear actuators (108) connecting the base and platform via a joint having at least two degrees of freedom, the joint (15) comprising an actuator clevis comprising first and second side lugs having first and second lug openings retaining a clevis pin, an anchor clevis retaining an axel comprising first and second axel fault retaining protrusions and an axel opening receiving the clevis pin and having primary and secondary axel passage sections, the first side lug opening, pin and first axel fault retaining protrusion having a primary lug radial clearance difference between a primary inner radius of the first lug opening and an outer radius of the pin that is less than a secondary lug radial clearance difference between a secondary lug inner radius of the first lug opening and a retaining outer radius of the first axel fault retaining protrusion.