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. 15, 1990
Filed:
Aug. 09, 1988
Thaddeus Zaborowski, Cambridge, MA (US);
The Schawbel Corporation, Cambridge, MA (US);
Abstract
A portable heating appliance having a member to be heated, includes first and second burners for heating the member; a portable fuel cartridge for supplying fuel to the burners, the furel cartridge including a fuel delivery valve for controlling the flow of fuel from the fuel cartridge, the fuel delivery valve including a control device for preventing the flow of fuel when in a first position and for permitting the flow of fuel when in a second, different position, and a first spring for biasing the control device to the first position; a plunger for actuating the fuel delivery valve in response to user actuation to start the flow of fuel from the fuel cartridge, the plunger pushing in the control device from the first position to the second position against the force of the spring to open the fuel delivery valve so that the latter permits the flow of fuel to the burners; the fuel cartridge further including a ring rotatably mounted on the housing of the cartridge and connected with the fuel delivery valve for moving the fuel delivery valve of the fuel cartridge between an active position to enable actuation of the control device thereof by the plunger and an inactive position at which the control device is not actuated by the plunger; and a regulator for maintaining a substantially temperature of the burners.