Abstract: A push-on pull-off connector member 30 for coupling to a standard bayonet receptacle 10 has three equi-spaced circumferential slots 36 for receiving the bayonet pins 20 of the receptacle 10. Spring rings 40 in circular recesses 38 opening into the slots 36 from each side retain the pins 20. The recesses 38 are easily formed, for example, by milling. The coupled connector resists a weak uncoupling force but separates under a strong force, and can provide a snatch-disconnect facility.In alternative embodiments, each slot 36 has a single circular ring (FIG. 6), two spring rings are formed at each end of a single member (FIG. 4), the rings have inwardly-directed tangs for ease of fitting and removal (FIG. 5), or the spring rings are parts of question-mark shaped members (FIG. 7).

Abstract: A plug connection for a shielded flat or round cable. A shielded connecting element (80,85) is connected in one piece with the cable shielding (91,95). The shielding connector element includes a housing contact part (70,86) which is in contact with a part lying on the ground or reference potential. The shielded connecting element (80) for the flat cable (3) extends between the cable core (92) and the cable shielding (91) and is in connection with the ground or reference potential. The housing contact part (86) for the round cable (30) is spring-loaded on the inside wall of housing (1).

Abstract: The present invention concerns a connecting device comprising essentially a male connector 1 having an inner sleeve 2 and an outer cylindrical sleeve 3 sliding axially in relation to the inner sleeve. An insulating block 4 placed on the inside of sleeve 2 contains a contact member 6. Small elastic tongues 15 assure the locking in position of a female connector element connectable with a male connector element 1. The sleeve 2 has on its outside a very wide V-shaped groove defining two ramps 23 and 24. The outer sleeve 3 has small elastic tongues 25 whose end have rounded protuberances 26 and tend to return sleeve 3 to a locking position after it has been pushed manually toward the front coupling surface or pulled in the opposite direction.

Abstract: A resilient alignment sleeve for a fiber optic connector which provides preferential attachment to one of two terminal pins. The sleeve has a relatively thick section extending over about 60 to 70% of the length of the sleeve and a relatively thin section extending over the remainder of the sleeve. The sleeve is retained on the terminal pin which is completely surrounded by the thick section due to increased frictional forces as compared with the thin section.

Abstract: A fiber optic connector is disclosed for optically coupling a pair of fiber optic cables or a single fiber optic cable and a light source or detector. A terminal member includes a pair of identical matching halves defining a through hole extending axially therethrough. The through hole has a first portion extending through a mating end of the terminal member and sized to snugly receive a length of the fiber core stripped of the outer coating and properly positioning the core with respect to the mating end of the terminal member. The through hole has a second portion extending through a rear end of the terminal member and sized for receiving the outer coating of the fiber optic cable. Projections are formed in the second portion of the through hole for clamping the outer coating to prevent lengthwise movement of the fiber optic cable relative to the terminal member.

Abstract: A closed and environmentally safe odorant injection apparatus comprises a pressured gas supply, preferably nitrogen, an odorant storage tank, a panel which contains a level pot and sight glass and manually actuated, pneumatically operated switches for drawing a measured portion of odorant and injecting the measured portion into LPG being loaded into a tank truck.

Abstract: The belt system, advantageously including a retractor (13) mounted on the seat (1) and directly involving the lap belt section (8), comprises an attachment buckle (7) connected to its anchor point (10) by an expandable link device (11), which normally permits a range of movement of buckle (7) away from anchor point (10) or toward the latter (for example by means of a return spring), but provided with means to oppose the extraction of the buckle (7) under predetermined conditions of acceleration of the vehicle and/or of the belt.

Abstract: A reaction between pyromellitic dianhydride (PMDA) and less than two moles of fluoroalcohol produces an intermediate with ester, free acid and anhydride groups. Reaction with an oxirane compound such as epichlorohydrin reacts at the acid sites to produce pendant hydroxyls which react with anhydride on adjacent molecules to produce oligomers. Products with fluoroalcohol:PMDA ratios of, for example, about 1:0.6 to about 1:0.85 produce treated fibers with improved retention of oil repellancy, especially when annealed at 100.degree.-130.degree. C.

Abstract: A locking element or latch is embodied from a metal plate and comprises a first pair of articulation tabs, a second pair of tabs to receive strains, these tabs being received in corresponding openings formed in the flanges of the base. The retaining member of the latch is guided in displacement in an L-shaped cutout and is associated with a floating contact with a rocker articulated on an ejector. A push button comprises engagement surfaces cooperating selectively with the locking member and ejector and ramps to assist the lifting of the latch. A single spring serves to actuate, and place under tension, all of the moving parts of the buckle.

Abstract: A reaction between pyromellitic dianhydride (PMDA) and less than two moles of fluoroalcohol produces an intermediate with ester, free acid and anhydride groups. Reaction with an oxirane compound such as epichlorohydrin reacts at the acid sites to produce pendant hydroxyls which react with anhydride on adjacent molecules to produce oligomers. Products with fluoroalcohol:PMDA ratios of, for example, about 1:0.6 to about 1:0.85 produce treated fibers with improved retention of oil repellancy, especially when annealed at 100.degree.-130.degree. C.

Abstract: Purified aromatic dicyanates are cured with a catalyst which is an Mn(II), Ag(II), Fe(III), Bi(III), In(III) or Hf(IV) salt at 150.degree.-200.degree. C. and then at 200.degree.-300.degree. C. for a time sufficient to cure the dicyanate without causing color formations to the extent of a Yellowness Index over 30. In some forms the dicyanate is combined with the catalyst and a thermoplastic.

Abstract: Solutions of ultrahigh molecular weight polymers such as polyethylene in a relatively non-volatile solvent are extruded through an aperture at constant concentration through the aperture and cooled to form a first gel of indefinite length. The first gels are extracted with a volatile solvent to form a second gel and the second gel is dried to form a low porosity xerogel. The first gel, second gel or xerogel, or a combination, are stretched. Among the products obtainable are polyethylene fibers of greater than 30 or even 40 g/denier tenacity and of modulus greater than 1000 or even 1600 or 2000 g/denier.

Abstract: Articles such as vests, helmets and structural elements containing a network of ultrahigh molecular weight, high strength, high modulus polyethylene or polypropylene fibers. The fibers, and especially polyethylene fibers of 15, 20, 25, 30 or more g/denier tenacity, and 300, 500, 1000, 1500 or more g/denier tensile modulus impart exceptional ballistic resistance to the articles in spite of the melting points, e.g. 145.degree.-151.degree. C. for the polyethylene fibers and 168.degree.-171.degree. C. for the polypropylene fibers, which are high for these polymers, but substantially lower than the 200.degree. C. or more melting point previously thought necessary for good ballistic resistance.

Abstract: In accordance with the teachings of the present invention, a core element is provided for the rotor or stator of an axial field electromagnetic device such as a motor or generator. The core element of the present invention comprises a cylinder of annular cross section having two annular faces, an axial thickness separating the faces and a plurality of radial slots in one of the faces. In accordance with the present invention, the dimensions of the core element and the slots thereof are sized according to a predetermined relationship. As a result, an electromagnetic device utilizing the core elements of the present invention is more energy efficient, cheaper and lighter relative to electromagnetic devices of the prior art.

Abstract: An interfacial process for producing a poly(ester-carbonate) containing aromatic dihydroxy moieties derived from phenolphthalein. In the process, phenolphthalein polyester oligomers are formed first, and then the oligomers are reacted with phosgene and with additional aromatic or cycloaliphatic diacyl halide and with an aqueous solution of bisphenol-derived salt to form the poly(ester-carbonate).