A multiple-beam ion-beam assembly consisting of two or more concentrically arranged ring-shaped ion-beam sources having ion-beam slits that emit a plurality of ion beams which overlap on the surface being treated and thus ensure uniformity in distribution of ion currents on the treated surface. Since the ion-beam assembly consists of a plurality of individual source, uniform treatment can be performed on a large surface area. Several embodiments of the invention cover the systems with individual...

A telescopic beam for use in an inclined hoist has five telescopic members. An actuator comprising a motorized winch and a block and tackle arrangement is provided for extending the telescopic members relative to one another. The block and tackle arrangement includes a cable which passes several times around sets of rollers positioned at the adjacent ends of first and second of the telescopic members. A lock is provided for fixing the positions of the first and second telescopic members. To reli...

A high performance beam accelerator in which accelerating voltage may be increased by applying a high excitation frequency to the accelerator core and controlling heat generation. The beam accelerator includes an annular hollow vessel with an annular passage, fixed magnetic field generators generating magnetic fields for deflecting and guiding a charged particle beam into an orbit, an accelerating gap for inducing an accelerating electric field, and an accelerator core for generating the acceler...

A telescopic beam comprises a plurality of telescopically-interconnected members which define rails along which a load-carrying tub can move. Means are provided for locking the telescopic members together. The beam is provided with a pair of tensioning cables which bridge several of the telescopic members. The cables are guided by means of spacers attached to the telescopic members.

A fabricated wooden beam including at least two longitudinal wooden members spaced parallel and apart by a plurality of wooden blocks spaced between and along the length of the longitudinal members. A plurality of truss plates, each installed across one side of a block and spanning between each longitudinal member, provide structural integrity. The truss plates are installed in pairs with one across either face of each block at an acute angle to the longitudinal axis of the beam. Alignment of th...

A supporting beam includes a first and second parallel spaced apart flange. A lattice web holds the two flanges apart. At one end of the flanges, there is a solid web of wood. The butt end of the solid web has a recess which is profiled for receiving an adapter section. The recess may be triangular or semi-circular or flat walled. The adapter section is symmetric with one half in and the other half projecting out of a recess. When two butt ends of two solid webs are overlain, the respective rece...

A support beam for a long functional unit, specifically in a paper and/or coating machine, including a long hollow body having a round or polygonal cross section and manufactured from a fiber reinforced material which was produced in a winding process, whereby the invention provides that the fiber reinforced material is one having a modulus of elasticity of >100 Gpa, and a heat expansion of .ltoreq.2.times.10.sup.-6 1/.degree. K in its longitudinal direction, as well as a fiber orientation wh...

A beam shutter is provided which comprises a plane-parallel birefringent element for separation arranged to separate input light beams having orthogonal polarization directions on the same optical path; a plane-parallel birefringent element for synthesis arranged to synthesize light beams having orthogonal polarization directions on different optical paths, for output; the birefringent element for separation and the birefringent element for synthesis being disposed in a spaced apart relationship...

An inexpensive, lightweight, safe bumper beam (10) has an optimum strength characteristic and is capable of effectively coping with all kinds of collisions including slight collisions and strong collisions. The bumper beam (10) is disposed on a front or rear end part of a vehicle. Joining parts of the bumper beam (10) are attached to stays (2a, 2b) attached to, for example, front end parts of longitudinal frames (1a, 1b) of a body of a vehicle so that the bumper beam (10) extends laterally. The ...

A beam knot forming part of a vehicle body structure and being constructed of three beam elements, each disclosing two side walls that extend with relative intervals and a transverse wall that connects the side walls, is disclosed. The beam elements are rigidly connected with each other in the beam knot and protrude from this in respective directions. One of the beam elements discloses a recess in one side wall thereof, another beam element inserts transversely through the recess with a section ...