Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Safety Valve for Hydraulically Actulated Devices

IP.com Disclosure Number: IPCOM000045390D
Original Publication Date: 1983-Mar-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 59K

Publishing Venue

IBM

Related People

Kupka, SG: AUTHOR

Abstract

A hydraulically actuated device, such as a robotic assembly, is interlocked in a fail-safe manner by installing a specially designed safety valve on the pressure side of the hydraulic supply circuit. A robotic assembly of this nature is described in U.S. Patent 4,132,318.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 59% of the total text.

Page 1 of 2

Safety Valve for Hydraulically Actulated Devices

A hydraulically actuated device, such as a robotic assembly, is interlocked in a fail-safe manner by installing a specially designed safety valve on the pressure side of the hydraulic supply circuit. A robotic assembly of this nature is described in U.S. Patent 4,132,318.

The drawing shows a representative robotic diagram primarily illustrating the hydraulic aspects of the system. A central processing unit (CPU) 1 monitors conditions in the system and provides control for maintaining system parameters. The system includes a hydraulic power supply 2 and an optional cooler 3 together with other control elements at 4 for connnecting the system to an air source. Other sections of interest include the manipulator assembly section 5 and the gripper assembly section 6, the manipulator section being concerned with the X, Y and Z servo positioning components while the gripper assembly is concerned with the rotary, pitch, yaw, and gripper components of the system. The system includes an orifice 8 and a safety solenoid Y. Orifice 8 has a relatively small dimension and serves as a bypass path for the hydraulics. Orifice 8 remains open at all times. When the safety valve is closed, the controller can maintain position control over the hydraulic actuators while preventing large, violent motions and the attendant hazard to personnel and equipment. Valve 9 is solenoid-activated, normally closed and permits a very limited amount of...