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.
Type:
Grant
Filed:
June 19, 2013
Date of Patent:
September 19, 2017
Assignee:
PERONI POMPE S.P.A.
Inventors:
Luciano Manara, Alberto Randi, Giorgio Vinciguerra
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.
Type:
Grant
Filed:
October 28, 2005
Date of Patent:
February 28, 2012
Assignee:
Peroni Pompe S.p.A.
Inventors:
Giorgio Vinciguerra, Luciano Manara, Andrea Sirtori
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).
Type:
Application
Filed:
January 16, 2007
Publication date:
February 5, 2009
Applicant:
Peroni Pompe S.p.A.
Inventors:
Giorgio Vinciguerra, Luciano Manara, Andrea Sirtori
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.
Type:
Application
Filed:
October 28, 2005
Publication date:
May 22, 2008
Applicant:
PERONI POMPE S.P.A.
Inventors:
Giorgio Vinciguerra, Luciano Manara, Andrea Sirtori