The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 07, 1977
Filed:
Apr. 23, 1976
Herbert Kuhnelt, Vienna, OE;
Rudolf Huber, Vienna, OE;
Hoerbiger Fluidtechnik KG, Vienna, OE;
Abstract
In apparatus for controlling a lubricating device which is actuated by pulses of compressed air, the apparatus including a drive piston disposed in a cylinder to undergo reciprocating movement under the action of each such pulse and a control valve disposed between the source of such pulses and the lubricating device, the control valve is periodically opened to permit one such compressed air pulse to be delivered to the lubricating device only after a predetermined number of compressed air pulses have been produced, by means of a stepping mechanism which includes a reciprocating pump connected to be driven by the drive piston to supply, in response to each cycle of movement of the drive piston, a predetermined quantity of liquid, an actuating cylinder containing an actuating piston and arranged to receive each such quantity of liquid to move the piston in a unidirectional, step-wise manner so that the actuating piston advances through the cylinder in discrete steps as a series of quantities of liquid are supplied by the pump, and an actuating member disposed between the control valve and the actuating piston to open the control valve when the piston reaches a selected location along the length of the actuating cylinder. After the control valve has been opened, the pulse of compressed air being delivered to the system is also conveyed to the actuating cylinder to drive the actuating piston back to its starting position and upon termination of the compressed air pulse, the control valve automatically closes.