An actuating device for a vehicle brake rigging, comprising a service brake and a spring parking brake. The device comprises, apart from a service brake cylinder (1) and piston (2) and a parking brake cylinder (15, 17) and piston (12), a ratchet wheel (8) disposed between the two pistons, non-permanent connection means (6, 7) provided between the ratchet wheel and the service brake piston; and fur...

1,4-Dihydro pyridine derivs. of formula (I), and their pharmaceutically acceptable acid addition salts, are new, where R1 = straight or branched, 1-4C alkyl, opt. substd. R2 = a radical with 1 or 2 C atoms, R3 = H or an aromatic ring, opt. substd. 12 Cpds. are specifically claimed, including those where R1 = methyl, R2 = methyl, and R3 = H, 2-picolyl, or 4-fluorobenzyl; and those where R1 = ethyl,...

Phosphorus-contg. derivs. of 4'-demethyl epipodophyllotoxin glucosides of formula (I) and pharmaceutically acceptable salts are new, where R1 and R6 together complete a 5-6C cycloalkyl gp.; or R1, R6 = 1-8C alkyl; or R6 = H; and R1 = 1-10C alkyl, 2-10C alkenyl, 5-6C cycloalkyl, 2-furyl, 2-thienyl, 6-10C aryl, 7-14C aralkyl or 8-14C aralkanyl, where the aromatic rings are opt. substd. by halogen, 1...

This invention relates to a method for the joining semiconductor material to aluminium foil. It includes: (1) providing aluminium foil with spaced small holes;(2) placing spherical semiconductor material at the place adjacent to the hole; (3) heating the foil and the material from the temp of 500 deg.C; (4) moving the material into hole under a pressure to shear off the natural oxidates on the sur...

Fibers having a length not less than that defined by the equation Lm = sigma Fd/2 tau wherein Lm is the minimum fiber length; sigma F is the tensile strength of the fiber; d is the diameter of the fiber and is less than half the wet thickness of the adhesive; and tau is the interfacial bond strength between fibre and compound may be used to strengthen laminating adhesives. Such adhesives we...

This invention relates to a novel method for the delivery of cytotoxic drugs to tumor cells by the administration of a tumor-specific antibody-enzyme conjugate that binds to the tumor cells, and the additional administration of a prodrug that is converted at the tumor site, in the presence of the antibody-bound enzyme, to an active cytotoxic drug. According to preferred embodiments of this inventi...

This invention relates to a novel method for the delivery of cytotoxic drugs to tumor cells by the administration of a tumor-specific antibody-enzyme conjugate that binds to the tumor cells, and the additional administration of a prodrug that is converted at the tumor site, in the presence of the antibody-bound enzyme, to an active cytotoxic drug. According to preferred embodiments of this inventi...

An apparatus and method for selecting a number of cellular radio channels to be boosted in a given geographic area provides either F1-F1 or F1-F2 operation. The signals can be boosted at the same frequency with input to output isolation being achieved by the use of directive transmit and receive antennas (18, 20) physically positioned to achieve sufficient isolation. Each signal is individually fi...

In a fuel rod tube manufacturing system, a tube processing subsystem and method include the steps of arraying, flush etching and rinsing, drying, inspecting and plugging groups of the tubes. At an inlet stage, the tubes are dispensed one at a time from a bundle thereof numbering in the hundreds of such tubes. The dispensed tubes are arrayed in a side-by-side relationship at an assembling stage int...

In a fuel rod tube manufacturing system, a tube processing subsystem and method include the steps of arraying, flush etching and rinsing, drying, inspecting and plugging groups of the tubes. At an inlet stage, the tubes are dispensed one at a time from a bundle thereof numbering in the hundreds of such tubes. The dispensed tubes are arrayed in a side-by-side relationship at an assembling stage int...

An apparatus for converting low level thermal radiation into mechanical work. The apparatus incorporates a collector (11) to receive and concentrate low level thermal energy to generate a pressure by vaporizing a working fluid. An expansible chamber (70), having at least one movable wall, defined by a diaphragm (54), is selectively in fluid communication with the collector (11). A movable piston (...

A process for removal of excess nitrogen and carbon oxides from a raw synthesis gas used to make ammonia. The raw synthesis gas is divided into two portions. The first portion is methanated to remove carbon oxides and then cooled to condense part of its nitrogen content. The condensed nitrogen is fed to the top of a nitrogen wash column. The second portion of the raw synthesis gas is passed over a...

An arrangement for supporting and turning a patient in different positions relative to the horizontal plane, especially an operating table, comprises a number of table sections 3 designed to be able to be joined together on their long sides in order to form a shell 1 which partly encloses the patient and whose inner surfaces 4 form different support surfaces for the patient and to which the patien...

When the regulator (9) is activated, the valve body (6,6a) is moved to locate against a valve seat (5). The coupling between the regulator and the valve body comprises a rotatably located component (8) connected to the regulator (9), which has a projection (8a) fitted at a distance from its centre of rotation. The projection (8a) engages in a recess (6b) in the valve body (6,6a), the body being mo...

The cooled electrical elements (111-138) in a low-resistance high- current source are connected via cooling channels (60 - 63, 66, 67, 70 - 72, 76 - 80) in the electrical connecting conductors (9, 211, 311, 10, 215, 315, ...) as parallel cooling circuits to a coolant distributor (8). The complete mechanical structure of the circuit arrangement is in the form of a sandwich and represents an electro...