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:
May. 05, 1981
Filed:
Mar. 05, 1979
Rolf Oppenberg, Wesel, DE;
Abstract
A safety device for an oil burner includes a pump which has a drive cylinder portion with a double-acting piston movable therein which is connected through a connecting rod to a suction piston portion which is movable in a suction portion of the pump cylinder. The oil burner is supplied with fuel oil from a supply line having a shutoff valve or valves which are connected through a suction line to the suction part of the piston. The suction portion is connected through a check valve to a return line and the drive cylinder is connected on respective opposite sides of the piston through valve means for regulating the movement of the drive piston so that it moves after the burner is turned off to displace the suction piston to effect a suction on the supply line to the oil lance of the burner so as to withdraw the oil therefrom.