Abstract: An implantable cervical plate assembly includes a cervical plate, one or more bone fasteners and a driver tool. The cervical plate comprises an elongated asymmetric body having one or more through-openings extending from the front surface to the back surface of the elongated asymmetric body. The one or more bone fasteners are configured to be inserted through the one or more through-openings, respectively. The bone fasteners comprise a threaded main body and a head that includes one or more flexible structures configured to be flexed and inserted into a groove and then unflex and remain captured within the groove. The driver tool includes an elongated shaft, a handle and a bone fastener-engaging. The bone fastener-engaging component comprises one or more structures that complement and engage at least one of grooves and lobes of the bone fastener opening.

Abstract: An implantable cervical plate assembly for stabilization of two adjacent spinal vertebras includes a cervical plate and one or more bone fasteners. The cervical plate comprises an elongated asymmetric body having a first straight side surface, a second contoured side surface opposite to the first side surface, front and back surfaces and top and bottom surfaces. The elongated asymmetric body comprises one or more through-openings extending from the front surface to the back surface of the elongated asymmetric body. The one or more bone fasteners are configured to be inserted through the one or more through-openings, respectively, and to be attached to locations in the spinal vertebras, thereby attaching the cervical plate to the spinal vertebras. The through-openings comprise a first diameter at the front surface of the elongated body, a second diameter at the back surface of the elongated body and a third diameter in the area between the front and back surfaces of the elongated body.

Abstract: An engine idle controller for an engine driven pressure washer. The pressure washer delivers high pressure water from a pump through the idle controller to a conventional wand which includes a manually operated, normally closed flow control valve and a spray nozzle. When the wand valve is opened, a resulting pressure drop between two chambers in the flow controller acts on a piston to move the engine throttle to a full throttle position. When the wand valve is closed, the pressures in the chambers equalize and the piston is moved to a position to set the engine throttle to an idle position.

Abstract: A pump for a pressure washer. The pump includes a cam housing, a piston assembly disposed within the cam housing, a rotary shaft assembly disposed within the cam housing, a journal plate attached to the cam housing, a head assembly attached to journal plate and valve assembly operatively connected to the head assembly. The rotary shaft assembly includes a cam shaft, a vertically-extending oil tube partially disposed within a central portion of the cam shaft, a cam threaded onto the cam shaft and a thrust washer positioned adjacent the threaded cam. The piston assembly includes a plurality of pistons, preferably three, in mating contact with the thrust washer. Each piston includes a piston spring cap at one end, a spring disposed over the piston and engaging the piston spring cap, and a seal retainer having a low pressure seal at one end and a high pressure seal at the other end.