Electric heat sealer energizable by internal battery set or external AC adapter
Patent 5142123 Issued on August 25, 1992. Estimated Expiration Date: 
September 30, 2011. 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.
September 30, 2011. 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 ReferencesInventorApplicationNo. 767598 filed on 09/30/1991US Classes:219/243, Combined with pressure application means156/515, Cutting element simultaneously bonds (e.g., cut seaming)156/583.2, Impulse heating156/583.9, Electric heating219/230, With tip cooling, clamping, or lighting means219/240With power supply, voltage or current control, or connection and/or disconnection meansExaminersPrimary: Bartis, AnthonyAttorney, Agent or FirmForeign Patent References
International ClassesH05B 001/02B32B 031/20 AbstractA housing supports a pair of insulating posts carrying electrical conductors connected a battery set located in the housing. A nonconductive base carries an exposed electric heating wire on the upper surface thereof, opposite ends of the heating wire being connected to electrically conductive side plates connected on the base, a spring biases the base upwardly so that the side plates are normally spaced from the conductors and the upper part of the base carrying the exposed heating wire extends through a hole in a cover supported by the housing. A press bar is pivoted to the housing and can be moved downwardly to engage an object to be sealed supported on the upper part of the base in contact with the exposed heating wire to urge the base downwardly and cause the side plates to engage the conductors and heat the heating wire. Alternately, the conductors can be connected to an external AC power outlet by an adaptor having a step-down transformer and rectifier connected to a plug adapter to be inserted into a power socket on the housing. | |
