The compounds represented by the structural formula wherein n is an integer of from 1 to 4, A, B and C each independently represent hydrogen, a lower alkyl having from 1 to 5 carbon atoms or a lower alkenyl having from 3 to 5 carbon atoms, provided that the sum of the carbon atoms in A, B and C is no more than 7, R1 and R2 each independently represent hydrogen or a lower alkyl having from 1 to 5 c...

An easily peelable heat seal between two sheets of cross-linkable polyolefin packaging materials is achieved by cross-linking the polyolefin material in each sheet by irradiating the sheets to a dosage level of at least 3 MR prior to heat sealing the sheets together. The easily peelable seal is especially useful where film surfaces in large flange areas are sealed together.

In an apparatus for joining textile threads with the aid of compressed air, there is provided a device for checking the tearing strength of the joint zone of the threads before their extraction from the apparatus. The device comprises at least one mobile member arranged to act on the loop formed by the joined threads with a predetermined traction force at an intermediate point between the points a...

A device (Fig. 2) for evenly spooling a trailing electric cable (32) onto a cable reel drum (38) mounted on a mine vehicle powered via that cable includes a rotatable cylindrical cam (102, Fig. 4) rotatably driven in a predetermined ratio to the speed of rotation of the drum. The cable passes to the drum through a reciprocable cable guide mounted on a pivotally oscillatable assembly (152, 138, 134...

A continuous, completely jacketed countercurrent centrifugal extractor of the type utilized to mix and separate two liquids that have different specific gravities and enter through separate inlets. The extractor has at least one overflow weir in a mixing zone between the inlet for the specifically lighter and the inlet for the specifically heavier liquid phase and a division of the mixing zone int...

Under normal skiing conditions, two lateral arms of a jaw unit cooperate with the toe end of a ski boot in order to maintain the boot in the axis of the ski and are held in position with a force designated as the inherent stiffness of release. When an excessive twisting effort is exerted on the skier's leg, the arms both move in a transverse direction with respect to the ski in order to permit lat...

1426175 Moulding tyres DUNLOP Ltd 4 April 1973 [6 April 1972] 15787/72 Heading B5A The sidewalls and tread portion of a pneumatic tyre are moulded as separate parts in separate mould cavities from rubber in an uncured state and the parts are then brought into abutment while still in their mould cavities and joined together and cured under heat and pressure. Each part has a locking sprue which hold...

The disclosure is of a machine for removing the meat from the prepared body of a crab, lobster or other crustacean by means of a jet of compressed air.

An industrial truck comprising a travel drive and a steering drive and sensors for scanning a trail laid in the ground and for guiding the vehicle along that trail includes a microprocessor for delivering steering commands to the steering drive. At least two pairs of sensors consisting of coils are connected to a multiplexer. Only a single processing channel is provided between the multiplexer and...

An umbrella with an oval canopy comprising a center pole (1), a plurality of long main ribs (12), and a plurality of short main ribs (31). The center pole (1) consists of upper and lower poles (1') (1'') slidably fitted. Each long main rib (12) consists of a proximal long main rib (16) and a long distal rib (19) slidably fitted to the proximal long main rib (16) through a slide member (18). Each s...

An umbrella with an oval or substantially oval canopy comprising a center pole (1), a plurality of short conventional main ribs (3), and a plurality of long main ribs (18). Each long main rib (18) consists of a proximal main rib (20), a distal main rib (22) slidably fitted to the proximal main rib (20) through a slide member (30), and upper and lower stops (31)(32) fixed thereon. When opened, the ...

A data processing system consists of a number of modules such as integrated circuit chips, each of which receives a clock signal. Each module contains a checking circuit 22 producing a failure signal which indicates whether or not the module is operating correctly. The clock signal is used to invert the sense of this failure signal in successive clock periods. Thus, the failure signal normally alt...

PCT No. PCT/JP84/00129 Sec. 371 Date May 17, 1985 Sec. 102(e) Date May 17, 1985 PCT Filed Mar. 23, 1984 PCT Pub. No. WO85/01557 PCT Pub. Date Apr. 11, 1985.A hollow portion of a tubular shaft (1) contains an elastic filler element (4) which has projections (6) formed on the outer periphery thereof. A lubricating-oil passage is defined between the inner peripheral surface of the hollow portion of t...

In an intruder alarm of the kind wherein a delay is imposed between the operation of an arming control and the time at which arming actually takes place, which delay is intended to allow an operator to evacuate the protected environment; there is provided an override switch 20 whereby the delay can be terminated and the armed state achieved at once. This obviates the necessity of the operator havi...

In making metal flake powder by wet ball milling a powder of the metal (e.g. nickel or stainless steel) in the presence of a lubricant in a mobile liquid system, the use of an organometallic substituted alcohol as the lubricant gives flake having improved reflectivity and/or electrical conductivity. The lubricant is preferably a titanate, e.g. isopropyl tri (dioctylpyrophosphato) titanate.

PURPOSE:To obtain an excellent flat wire rod free from flaw and deformation by heavy electromagnetic force, by welding a nonmagnetic metallic material into a circular tube and intertwisting many superconductive wire materials around the outer circumference of the tube before rolling them into a flat shape and enhancing the density of superconductie wire materials while preventing them from entangl...

The bond strength between a sulphur-vulcanizable rubber and a metal, especially brass, is increased by using as bonding promoter a compound having the formula R-(CH2)a-S2O3-M+ or a hydrate thereof, where a has an integral value of at least 1, and where (i) M+ represents a sodium ion or an equivalent of a divalent nickel or cobalt ion and R represents hydroxy, cyano, chlorophenyl, fluorophenyl, nit...