Progressive-central lubrication system
Patent 4397376 Issued on August 9, 1983. Estimated Expiration Date: 
February 17, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 17, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2346801 2905270 3145803 3526299 3527322 Metering valve for lubrication injector Adjustable progressive distributor valve Patent #: 4044924 InventorAssigneeApplicationNo. 06/235289 filed on 02/17/1981US Classes:184/7.4With measuring or metering value systemExaminersPrimary: Brown, David H.Attorney, Agent or FirmInternational ClassesF16N 25/02 (20060101)F16N 25/00 (20060101) Foreign Application Priority Data1980-03-03 DEAbstractThe central lubricating system has a progressive distributor (3) and a pump connected to the pressure connection of the initial segment of the progressive distributor, in particular for the manual feeding of lubricant by a hand pump or a lubricating gun. In order to improve such a central lubricating system so that upon manual or equivalent feeding of the lubricant preselected or adjustable delivery quantities of the progressive distributor are obtained by controlled cycles there is provided a predosaging unit (1) which contains a piston (16) which is arranged in the cylindrical space (12), can be displaced between two end positions and is spring-loaded at one end (spring 19). The cylindrical space (12) is divided by the piston into two working chambers (17, 18) which are connected to each other by a closable lubricant changeover canal (26), one of which chambers (18) is connected with the pressure connection of the progressive distributor and with a feed line (22) while the other (17) is connected to a control segment (6) of the progressive distributor. | |
