Patent
Hydraulic actuator having a self-aspirating actuator rod seal
TLDR
In this paper, the authors describe a hydraulic actuator in which an absorbent material is carried by the actuator housing at the interface between it and actuator rod to capture fluid leaking from the operating chamber.Abstract:
A hydraulic actuator in which an absorbent material is carried by the actuator housing at the interface between it and the actuator rod to capture fluid leaking from the operating chamber. The fluid captured by the absorbent material is drawn therefrom and is directed to a reservoir in response to the reciprocal movement of the actuator rod relative to the housing.read more
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Apparatus for fluid delivery in chemical vapor deposition systems
TL;DR: In this paper, the authors describe an apparatus and method for delivering fluid components for semiconductor processes such as chemical vapor deposition (CVD) and chemical etch processes using a closed loop feedback system composed of temperature and pressure sensors.
Patent
Anti-leak seal for pump motor
TL;DR: In this paper, a method and apparatus for recovering leaked fluid or directing fluid flow or propagation through utilization of negative pressure pulses occurring in a pressurized fluid system is presented, where leakage of hydraulic fluid past the output shaft seal may be efficiently collected and redirected into the pressurized hydraulic fluid system through utilizing of negativepressure pulses that are developed periodically by fluid direction changes during operation of the hydraulic fluid motor.
Patent
Hydraulic actuating unit
TL;DR: In this article, the authors describe a hydraulic actuating unit consisting of a cylinder housing (8) and a piston (7), which is axially movable out of the open end (13) of the cylinder housing.
Patent
Fluidic actuator scraper seal
TL;DR: In this paper, dual U-cup seals are used in conjunction with conventional seals as fluidic actuator shaft scrapers for actuators operating in contaminated environments, such that they scrape contaminants off of the shaft.
Patent
Packing gland leak retriever device
TL;DR: In this paper, a leak retriever for the packing gland on oil well pumps is described, which has a reservoir disposed about packing gland to collect oil which leaks through the gland and an auxiliary pump which is mounted in the reservoir and connected to pump all oil collected back into the discharge line for the well.
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Patent
Vacuum system for hydraulically operated mechanisms
TL;DR: In this article, a vacuum system for hydraulically operated mechanisms is described, which is used to prevent leakage and dripping of oil between relatively movable parts of a hydraulic unit.