Abstract: A fluorovinyl ether of the formula: R1CO(OCH2CF2CO)k—(OCH2CF2CF2)m[OCF(CF3)CF2]nOCF═CF2 wherein R1 is an C1-C8 aliphatic or halogenated C1-C8 aliphatic group or an aromatic group which may optionally have at least one substituent, k is an integer of at least 0, m is an integer of at least 1, and n is an integer of at least 0.

Abstract: Novel silicon-containing organic fluoropolymers which are appliable to materials over a wide range and which have excellent antifouling property. The silicon-containing organic fluoropolymer of the invention is represented by the general formula and has a number average molecular weight of from 5×102 to 1×105: wherein Rf represents perfluoroalkyl; Z represents fluoro or trifluoromethyl; a, b, c, d and e each independently represent 0 or an integer of 1 or above, provided that a+b+c+d+e is not less than 1 and the order of the repeating units parenthesized by subscripts a, b, c, d and e occurring in the formula is not limited to that shown; Y represents hydrogen or alkyl containing 1 to 4 carbon atoms; X represents hydrogen, bromo or iodo; R1 represents hydroxy or a hydrolyzable substituent group; R2 represents hydrogen or a monovalent hydrocarbon group; 1 represents 0, 1 or 2; m represents 1, 2 or 3; and n represents an integer of 2 or above.

Abstract: This invention discloses a width-variable mold device to be used by placing a feed device for moving minor side members toward a movable direction and by varying steplessly the width of the mold within a certain range by means of the operation of the feed device, in a mold device formed in an approximately rectangular shape by both two mutually opposed major side members having slightly curved opposed surfaces so that their opposed interval may reach its maximum at the center portion and its minimum at both ends and two opposed minor side members bringing both side ends into contact with the opposed surfaces of the major side members and placing between the major side members, wherein the major side members and the minor side members are equipped with their water cooled jackets at their outside, each of the major side members is suspended and supported to the support tables at both sides so as to move each of the major side members toward the direction where their opposed interval varies, and at the same time

Abstract: A novel amine amide of the formula: ##STR1## wherein the various substituents are defined hereinbelow. The compounds are useful as thickening agents, disoxidation catalysts and monomers.

Abstract: 2,2,3-trifluoropropionyl fluoride is prepared by opening the ring of tetrafluorooxetane in the presence of a catalyst. Analogously, a novel 2,2-difluoropropionic acid derivative of the formula:XCH.sub.2 CF.sub.2 COY (I)wherein X is chlorine, bromine, iodine, a group of the formula:R.sub.1 O-- (II)orR.sub.2 COO-- (III)wherein R.sub.1 R.sub.2 are each an aliphaic or halogenated aliphatic hydrocarbon group having 1 to 8 carbon atoms or an aromatic hydrocarbon group having 6 to 8 carbon atoms optionally bearing at least one substituent, or a group of the formula:X'CH.sub.2 CF.sub.2 CF.sub.2 O-- (IV)wherein X' is fluorine, chlorine, bromine, iodine, the group of the formula: R.sub.1 O--or R.sub.2 COO--; and Y is fluorine or a group of the formula:--OR.sub.3 (V)wherein R.sub.

Abstract: A corrosion-resistant electric motor casing comprises a substantially cylindrical yoke and barrel, and a pair of brackets fixed to and closing the axially opposite ends of the yoke and barrel. The yoke and barrel comprises a first member substantially in the form of a hollow cylinder made of a material which is sufficiently ferromagnetic to serve as a motor yoke, and a second member in the form of a pipe of aluminmum fitted over the first member and covering the outer peripheral surface thereof. The motor casing is made highly resistant to corrosion without involving an increase in the weight and cost thereof.

Abstract: A novel polyaminoamide of the formula: ##STR1## wherein R.sub.m and R.sub.m ' are, the same or different, a hydrogen atom or a monovalent organic group and A.sub.m is a divalent organic group, or R.sub.m and/or R.sub.m ' form a cyclic group together with A.sub.m and the nitrogen atom to which they are bonded. m changes from 1 to p (where p is a positive integer) and n.sub.m is a positive integer, which can be prepared by reacting a 2,2,3,3-tetrafluorooxetane of the formula: ##STR2## with m kind(s) of diamine(s) of the formula: ##STR3## wherein m is the same as defined above.

Abstract: A telescopic front suspension including a bottom case (9; 31; 83; 111; 151) supporting a front wheel of a vehicle, and a fork pipe (8; 32; 84; 112; 152) slidably fitted in the bottom case. The telescopic front suspension has a restriction mechanism (18a; 19; 47, 48, 70, 71, 135, 136; 178, 179) for restricting, at a predetermined degree of contraction between the bottom case and the fork pipe, the relative expansion between the bottom case and the fork pipe.

Abstract: An apparatus for preventing defective packing of cigarets wherein a presser which moves a plurality of cigarets arranged on two or three steps so as to be packed at a fixed velocity in the lengthwise direction of the cigarets along a frame is provided, a plurality of contact arms opposed to the respective cigarets arranged on the uppermost step are respectively independently rotatably supported on a shaft arranged above and at right angles with the frame, each contact arm is fitted with a shielding plate at the upper end and with a roller at the lower end so as to be suspended by the self-weight of the roller and to be pressed to rotate by the cigaret on the upper step with which it contacts, on the other hand, a sensing lever rotated by a supporting shaft is projected at right angles with the advancing direction of the cigarets on the side of the lower step of the cigarets so as to rotate clockwise and anticlockwise against a spring and to be pressed to rotate by the side of the cigarets with which it contac