plunger (Total 11478 Patents Found)

A plunger apparatus may include an upper cylindrical section, a plurality of through-holes, an elongated body, and a lower cylindrical section. The plurality of through-holes may be circumferentially arranged about the upper cylindrical section to provide passages for venting and releasing particulates that clog the pl...
The invention relates to an oscillating electrodynamic compressor having an electromagnetic drive which maintains a radial magnetic field in an annular gap in which a coil is arranged for axial contactless movement. The coil is mounted on a plunger guided inside a bore of a cylinder member forming the compressor. The p...
The invention relates to a plunger for a solenoid valve having a plunger shaft, a closure element, and a sealing element, and a method for labeling plungers for solenoid valves. According to the invention, at least one permanent mark is applied by means of machining, allowing the association of the corresponding plunge...
La présente invention concerne une unité piston (41) comprenant : un élément tige (418) et un corps de piston (411, 412, 413) monté de façon amovible sur l'élément tige (418), un percuteur (414) monté amovible entre le corps de piston (411, 412, 413) et l'élément tige (418), et un premier élément d...
The invention discloses a system and method for positioning a plunger and tracking the running state of the underground plunger. The system comprises a ground monitor subsystem and a plunger monitor subsystem. The plunger monitor subsystem is controlled by the ground monitor subsystem. The ground monitor subsystem coll...
The utility model provides a plunger pump deep hole circular arc processing device. The problem of in the current plunger pump casing round hole processing troublesome is solved. It includes the driving cylinder, the casing, anchor clamps with locate the cutter on the anchor clamps, the driving cylinder in be equipped ...
The tank (1) has a closed enclosure delimiting a plenum chamber (2) and a chamber (3). The plenum chamber has a liquid outlet (5) emerging into the chamber (3). The outlet is placed in a lower point of the plenum chamber. The outlet is located immediately near a discharge end (10) of an immersion pipe (7) in the plenum...
A single drive mechanism for simultaneously driving plungers of a plurality of metal molds in each of the sections by employing an output cost-efficient electric motor as a mechanism for driving the plungers. The novel plunger drive mechanism makes it possible to correctly and efficiently mold the articles without caus...
A syringe assembly including a plunger rod (14) separate and detached from a syringe barrel (12) and a packaging member, the plunger rod having a sealing member and the packaging member having a first compartment (96) and a second compartment (98) is disclosed. With the syringe barrel (12) received within the first com...
A liquid dispenser includes a plunger and an elongate barrel having a cylindrical bore which receives the plunger. The plunger includes an axial passage which delivers a volume of liquid as the plunger is depressed downwardly into the barrel. The volume of liquid delivered depends on the length of the downstroke of the...
Solenoid apparatus having a substantially cylindrical casing, an electro-magnetic coil, a plunger axially aligned and slideably mounted to the casing, a housing hermetically mounted to an end of the casing and a vacuum source operatively coupled to the external port. The plunger has a first end extending outside of the...