Abstract: A positive displacement machine comprises a cylinder inside which there are a mobile piston, at least one first and one second insulation chamber containing a respective set of gaskets, at least one first and one second gland each of which is suitable for operating on one of the sets of gaskets, each gland comprising a tubular threaded portion and a ring nut fixedly attached to the tubular threaded portion. A sleeve able to slide with respect to said cylinder has a first end in contact with the first set of gaskets and a second threaded end for receiving in engagement the tubular threaded portion of the second gland, the sleeve being slidingly engaged by the first gland, and at least one of the ring nuts being a cylindrical gear wheel with straight teeth.

Abstract: A positive displacement machine comprises a cylinder inside which there are a mobile piston, at least one first and one second insulation chamber containing a respective set of gaskets, at least one first and one second gland each of which is suitable for operating on one of the sets of gaskets, each gland comprising a tubular threaded portion and a ring nut fixedly attached to the tubular threaded portion. A sleeve able to slide with respect to said cylinder has a first end in contact with the first set of gaskets and a second threaded end for receiving in engagement the tubular threaded portion of the second gland, the sleeve being slidingly engaged by the first gland, and at least one of the ring nuts being a cylindrical gear wheel with straight teeth.

Abstract: A device (1) for the adjustment of a gland nut (2), provided with a plurality of gripping means (8) through which said gland nut (2) can be caused to rotate, comprising an engaging member (3) and actuator means (25, 26) to cause the engaging member (3) to effect a working movement from a first position to a second position. The engaging member (3) is capable of effecting one-way engagement with the gripping means (8) to rotate the gland nut (2) through a predetermined angle (?) in the working movement from the first position to the second position.

Abstract: A reciprocating pump (1) comprises a plurality of reciprocating pistons (2a, 2b, 2c) extending along respective longitudinal axes (X-X) parallel to each other and lying in a plane (?), a plurality of pumping work chambers (5a, 5b, 5c), and a plurality of diaphragms (7a, 7b, 7c), each arranged in a respective pumping work chamber (5a, 5b, 5c). In particular, the diaphragms (7a, 7b, 7c) are arranged coplanar in a plane (?) perpendicular to the axes (X-X) of the reciprocating pistons (2a, 2b, 2c), and the diaphragm of at least one reciprocating piston is offset with respect to the diaphragm of the adjacent reciprocating piston, in the direction (Y-Y) perpendicular to the plane (?) defined by the axes (X-X) of the reciprocating pistons (2a, 2b, 2c).

Abstract: A device (1) for the adjustment of a gland nut (2), provided with a plurality of gripping means (8) through which said gland nut (2) can be caused to rotate, comprising an engaging member (3) and actuator means (25, 26) to cause the engaging member (3) to effect a working movement from a first position to a second position. The engaging member (3) is capable of effecting one-way engagement with the gripping means (8) to rotate the gland nut (2) through a predetermined angle (?) in the working movement from the first position to the second position.

Abstract: The invention relates to the method of use of compounds with B3-agonist activity for inhibiting uterine contractions, preventing or slowing down premature labor, or for the treatment and/or prophylaxis of dysmenorrhea.

Abstract: The invention relates to 2-amino-7-hydroxytetralin carboxyalkyl ethers of formula ##STR1## wherein Alk represents a straight or branched (C.sub.3 -C.sub.5)alkylene group, and R is hydrogen or (C.sub.1 -C.sub.4)alkyl, useful as starting materials in the synthesis of 7-substituted phenylethanolaminotetralins of formula (XII) ##STR2## wherein X represents hydrogen, halogen, (C.sub.1 -C.sub.4)alkyl, or trifluoromethyl which are useful as spasmolytics and anti-glaucoma agents.The new 7-substituted phenylethanolaminotetralins (XII) as well as the intermediates in the preparation of the compounds (I), the N-protected 2-amino-7-hydroxytetralin carboxyalkyl ethers, are also claimed.

Abstract: A method of prophylaxis and/or treatment of intestinal motility disorders, in particular of constipation, in mammals which comprises administering to a mammal in need of such a treatment a prophylactically and/or therapeutically effective amount of a compound of formula (I) ##STR1## wherein Alk represents a straight or branched (C.sub.1 -C.sub.4)alkylene radical, andR represents a cyano, acetyl, (C.sub.3 -C.sub.7)cycloalkyl, phenyl, p-tolyl, pyridyl, pyridyl 1-oxide, or naphthyl group, or of a pharmaceutically acceptable salt thereof.

Abstract: Aryloxypropanolaminotetralins with beta-antagonist activity of the formula ##STR1## wherein R is hydrogen, hydroxy or methoxy and Ar is an optionally substituted aromatic or heteroaromatic group, in optically active or inactive form as well as their acid addition salts are described.A process for their preparation and pharmaceutical compositions containing the compounds of formula (i) or their pharmaceutically acceptable acid addition salts, are also described.

Abstract: A method of prophylaxis and/or of treatment of ocular disorders, mainly of controlling intraocular hypertension and treating glaucoma, which comprises administering, preferably topically, a prophylactically and/or therapeutically effective amount of a phenylethanolamine derivative.

Abstract: A method of prophylaxis and/or treatment of intestinal motility disorders, in particular of constipation, in mammals which comprises administering to a mammal in need of such a treatment a prophylactically and/or therapeutically effective amount of a compound of formula (I) ##STR1## wherein Alk represents a straight or branched (C.sub.1 -C.sub.4)alkylene radical, andR represents a cyano, acetyl, (C.sub.3 -C.sub.7)cycloalkyl, phenyl, p-tolyl, pyridyl, pyridyl 1-oxide, or naphthyl group, or of a pharmaceutically acceptable salt thereof.

Abstract: Phenylethanolamine analog active compounds, optionally substituted on the phenyl group with an halogen atom or with an alkyl or trifluoromethyl group and substituted on the amino group with a phenylalkyl or phenoxy alkyl group optionally substituted on the benzene ring, are used for the treatment and/or prophylaxis of gastrointestinal diseases associated with a smooth muscle contraction.

Abstract: Methyllevallorphanium salts having peripheral antagonistic activity of formula ##STR1## wherein Y.sup.n(-) represents the anion a pharmaceutically acceptable acid other than halogen and n represents the number of negative charges of said anion; a process for their preparation by exchange of the halogen ion with the Y.sup.n(-) anion; and pharmaceutical compositions containing them as active ingredients.

Abstract: The present invention relates to a pharmaceutical composition having a peripheral antagonistic action with respect to opiates containing, as active ingredient, a haloallylate of levallorphan of formula: ##STR1## where X is chlorine, bromine or iodine, mixed with a pharmaceutical excipient.