公开(公告)号：US20240052829A1

公开(公告)日：2024-02-15

申请号：US18259195

申请日：2021-12-27

Applicant: O.M.P. OFFICINE MAZZOCCO PAGNONI S.R.L.

Inventor： Giuseppe LO BIUNDO ,  Carlo PACHETTI

IPC: F04C2/10 ,  F04C15/00

CPC classification number: F04C2/103 ,  F04C15/008 ,  F04C15/00

Abstract: A motor vehicle oil pump, including: a pump body, an external rotor having a first plurality of lobes, an internal rotor having a second plurality of lobes configured to engage the first plurality of lobes of the external rotor, and a driving body rotatable with respect to the pump body about a first axis of rotation. The external rotor is constrained to the driving body. An idle shaft is rotatably connected to the pump body about a second axis of rotation parallel and eccentric to the first axis of rotation. The external rotor rotates about the first axis of rotation and is rotated by the driving body. The driving body is rotated by a motor. The internal rotor is fitted onto the idle shaft for rotating about the second axis of rotation and is rotated by the external rotor.

公开(公告)号：US20180372095A1

公开(公告)日：2018-12-27

申请号：US16019463

申请日：2018-06-26

Applicant: O.M.P. OFFICINE MAZZOCCO PAGNONI S.R.L.

Inventor： Giuseppe LO BIUNDO ,  Francesco PALLANTE

IPC: F04C14/22 ,  F01P5/10 ,  F04C2/344

Abstract: A water pump with a pump body, a chamber defined inside the pump body, and a rotor rotatable inside the chamber around a rotation axis with a plurality of vanes movable along respective radial directions. A tilting stator is arranged inside the chamber in an eccentric position with respect to the rotor. The tilting stator is pivoted at a rotation pin. A ring is interposed between the tilting stator and the rotor and is in contact with a radially inner surface of the tilting stator and with radially outer ends of the vanes. Adjusting members for adjusting the pump displacement are active on the tilting stator to move the tilting stator with respect to the rotor and place the tilting stator in at least one predetermined operating position defined between a maximum eccentricity position and a minimum eccentricity position.

公开(公告)号：US20180372093A1

公开(公告)日：2018-12-27

申请号：US16018769

申请日：2018-06-26

Applicant: O.M.P. OFFICINE MAZZOCCO PAGNONI S.R.L.

Inventor： Giuseppe LO BIUNDO ,  Francesco PALLANTE

IPC: F04C2/344

Abstract: A water pump with a stator, a chamber defined inside the stator, a ring arranged inside said chamber having a radially outer surface in contact with a radially inner surface of the stator, and a rotor arranged inside the ring and rotatable around a rotation axis. The rotor has a plurality of vanes movable along respective radial directions and having respective radially outer ends in contact with a radially inner surface of the ring. The ring is made of a material having a friction coefficient lower than friction coefficient of metal materials.

公开(公告)号：US20200378382A1

公开(公告)日：2020-12-03

申请号：US16970447

申请日：2019-03-06

Applicant: O.M.P. OFFICINE MAZZOCCO PAGNONI S.R.L.

Inventor： Giuseppe LO BIUNDO ,  Angelo PANCOTTI

IPC: F04C14/22 ,  F04C2/344

Abstract: A variable displacement rotary vane pump. The pump has a pump body, a rotor with vanes that rotates inside the pump body around a rotation axis, an oscillating stator arranged in an eccentric position around the rotor, a fulcrum for the rotation of the oscillating stator with respect to the pump body, and adjusting means for adjusting the displacement of the pump. The adjusting means act on the oscillating stator to move it with respect to the rotor and the pump body. The fulcrum is integrally formed with the oscillating stator and is housed in a recess formed in the pump body. The pump has a sliding element between the fulcrum and the recess. The sliding element is at least partially free to rotate within the recess.

公开(公告)号：US20170328365A1

公开(公告)日：2017-11-16

申请号：US15531409

申请日：2015-12-03

Applicant: O.M.P. OFFICINE MAZZOCCO PAGNONI S.R.L.

Inventor： Giuseppe LO BIUNDO ,  Alessandra DE RANGO

IPC: F04C14/22 ,  F04C15/00 ,  F01C21/10 ,  F04C2/344

CPC classification number: F04C14/22 ,  F01C21/106 ,  F04C2/344 ,  F04C14/226 ,  F04C15/0003 ,  F04C2210/206 ,  F04C2240/10 ,  F04C2240/30

Abstract: A variable displacement oil pump is described. The oil pump has pump body connected to an intake channel and to a delivery channel, a rotor capable of rotating inside the pump body about a rotation axis and provided with a plurality of vanes. The oil pump has an oscillating stator arranged in an eccentric position around the rotor and pivoted inside the pump body at a rotation pin. The oil pump has adjustment means for adjusting the displacement of the oil pump which acts on the oscillating stator to displace it with respect to the rotor and position it in at least one predetermined operative position. The adjustment means has first thrusting means configured to exert a first thrusting action on a first outer surface portion of the oscillating stator arranged on a substantially opposite side with respect to the rotation pin taking as a reference the rotor.