Invention Grant
US4756299A Chemical heating pad with differing air-admitting perforation sets for
different heat-generation levels
失效
化学加热垫，具有不同的进气穿孔套件，用于不同的发热量
- Patent Title: Chemical heating pad with differing air-admitting perforation sets for different heat-generation levels
- Patent Title (中): 化学加热垫，具有不同的进气穿孔套件，用于不同的发热量
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Application No.: US121929Application Date: 1987-11-18
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Publication No.: US4756299APublication Date: 1988-07-12
- Inventor: Carl W. Podella
- Applicant: Carl W. Podella
- Applicant Address: WI Kenosha
- Assignee: Hypertherm Technologies, Inc.
- Current Assignee: Hypertherm Technologies, Inc.
- Current Assignee Address: WI Kenosha
- Main IPC: A61F7/00
- IPC: A61F7/00 ; A61F7/03 ; F24V30/00 ; F24J1/00
Abstract:
A heating pad of the type having a particulate chemical mixture, which is exothermically reactive in the presence of air, and a pair of opposed panels forming an envelope containing the mixture and admitting air to support the reaction. Differing perforation sets in the opposed panels allows the pad to generate two levels of heat and allows opposed body-contact surfaces of the pad to apply two different heat conditions to the human body.
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