1007 results about "Horizontal force" patented technology

A vehicle, including a vehicle frame, a duct carried by the vehicle frame with the longitudinal axis of the duct perpendicular to the longitudinal axis of the vehicle frame, a propeller rotatably mounted within the duct about the longitudinal axis of the duct to force an ambient fluid therethrough from its inlet at the upper end of the duct through its exit at the lower end of the duct, and thereby to produce an upward lift force applied to the vehicle, and a plurality of parallel, spaced vanes pivotally mounted to and across the inlet end of the duct about pivotal axes perpendicular to the longitudinal axis of the duct and substantially parallel to the longitudinal axis of the vehicle frame, the vanes being selectively pivotal about their axes to produce a desired horizontal force component to the lift force applied to the vehicle.

A vehicle, comprising: a vehicle frame; a duct carried by the vehicle frame with the longitudinal axis of the duct perpendicular to the longitudinal axis of the vehicle frame; a propeller rotatably mounted within the duct about the longitudinal axis of the duct to force an ambient fluid through from an inlet at the upper end of the duct through an exit at the lower end of the duct, and thereby produce an upward lift force applied to the vehicle; a first plurality of substantially parallel, spaced vanes non-pivotally mounted across at least the inlet end of the duct; and fluidic means for affecting the ambient fluid flow around the vanes to generate horizontal force components to the lift force applied to the vehicle.

A mammographic method and apparatus are provided for obtaining improved compression of posterior, middle and anterior breast tissue without pushing posterior breast tissue from the imaging volume and with less discomfiture to the patient. An initial compression of the posterior tissue is achieved by vertical, relative displacement of the paddle relative to the bucky assembly to compress the posterior breast tissue therebetween. Less patient discomfiture is achieved by using an inclined compression surface on the paddle or bucky assembly to compress the anterior and middle breast sufficiently for good X-ray imaging without further displacement of the skin adjacent the chest wall. A horizontal force component inclined force will not push the posterior compressed breast tissue from the imaging area. Herein a paddle may have a posterior breast section and have a flexed section which is biased to engage and conform to the breast shape. The flexed section may be releasably held by a lock and then released to apply compression forces to the middle and anterior breast. The flexed section is guided to remain level and to uniformly compress breasts which are not centered thereunder and without binding. The buckey assembly may have a hinged inclined section to compress the middle and anterior portions of the breast. The entire bucky assembly may be hinged to raise the image detector thereon and thereby lessen the heel effect. Alternatively, the bucky cover may be hinged to swing upwardly into an inclined position to compress the middle and anterior breast portions while the image detector is not.