A ship with stabilizing fins either laterally extending or forming the bilge keel, which fins are fixed and which have thin leading edges, an upper surface that is concave, and a lower surface that diverges from the upper surface.

A profiled plunger is provided for use with a reciprocating pump. A flushing chamber and a main pumping chamber of a reciprocating pump are connected by a connector having an aperture, the perimeter dimension of which is less than the internal perimeter dimension of the flushing chamber. A flushing space is defined between the connector and the profiled plunger. The profiled plunger is reciprocatingly mounted through the flushing chamber, connector, and the main pumping chamber. The perimeter di...

An apparatus and method for thermal processing, and more particularly for rapid thermal processing wherein a first thermal radiator generates and projects a first pattern of thermal radiation onto a first surface of a substrate, and wherein a second thermal radiator generates and projects a second pattern of thermal radiation onto a second surface of the substrate. The temperatures on the first and second surfaces are sensed by sensing means. Means for controlling the first and second thermal ra...

The deformation characteristic of a profiled aerodynamic aircraft component is improved by forming ridges (6, 7) in the top and bottom skin (4, 5) of the component. Two ridges (6, 7) form a pair in which the bottom ridge (7) is at least partially nested in the top ridge (6) to the extent that the ridges are bonded to each other in a trailing edge area (9) of the component along a width (W) extending in the depth or y-direction of the component. The ridges taper from the trailing edge area (9) to...

A hair clip of the invention comprises two jaws hinged together by hinge means. At least some of the teeth are relatively narrow in the vicinity of their base and can have a maximal width in the central area of the tooth and be relatively narrow in the vicinity of the free end of the tooth. This improves the retention of the clip in the hair.

In a profiled inserted-blade cutter, with blades (13) which can be re-sharpened without altering the profile and trajectory, each blade (13) is secured to a blade holder (14) having a base with a T-shape cross section, one arm (16) of the transverse section of which engages in a first longitudinal groove (4) in the basic unit (2). The other arm (17) engages in a second longitudinal groove (5) also in the basic unit (2) and open towards the first groove (4). The flanks of the first and second lon...

An antenna comprises: a main reflector being a body of revolution of arbitrary curve which axis diverges from axis of the revolution; a sub-reflector being a body of the revolution of arbitrary curve along the axis of revolution, having a circle and a vertex pointing to the main reflector and being placed between the circle and the main reflector; a radiator being located along the axis of revolution and being placed between the main reflector and the sub-reflector; and wherein the main reflecto...

The subject application is directed to a compressor valve having a valve seat, a valve guard and a sealing plate with contoured sealing surfaces, the valve seat having defining inlet flow ports for admitting a controlled medium into the valve, the lower surface of the valve seat including at least one seating surface, the a valve guard having a recessed area and defining outlet flow ports for discharging a controlled medium from the valve, the sealing plate being positioned within a cavity betwe...

The method for separating a profiled foil (5) is carried out using a rotating separation foil (1) which forms a planar surface with a circular periphery (11). The separation foil is rotated (1a) about the circle center (10) and in the plane (10a), the foil plane, which is spanned by the surface. The periphery is brought into contact (15) with the profiled foil by the execution of a relative movement (1b). In this, through abrasion, material (6) is removed and a separation gap (51) is produced in...

A piston with at least one compression ring, a top end and a longitudinally extending axis for an internal combustion engine. The piston includes at least one compression ring groove defined by first and second spaced lateral surfaces for receiving the at least one compression ring. The first lateral surface is located nearest the top end of the piston. At least one of the first and second surfaces includes a plurality of profiles extending circularly around the axis and having a depth in the ra...