Patent US3579242A successfully refreshed from Google Patents.
Patent US4952775A successfully refreshed from Google Patents.
US4952775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor heating panel
Assignee: Panasonic Electric Works Co Ltd
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Filing: 1989-03-14
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Granted: 1990-08-28
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Expires: 2009-03-14
Abstract
Abstract A floor heating panel made of wood, a heating element on the top of the wood, a covering layer placed over the heating element to cover the entire top surface of the wood, and a cushioning layer beneath the wood. The wood has on its bottom surface a row of slits to allow the wood to resiliently flex to a limited extent. The floor heating panel has two connectors that are slidably along one dimension of the heating panel between inner and outer stop elements.
Inventors
- 👤 Seiko Yokoyama
- 👤 Hikomi Tanooka
- 👤 Minoru Hibino
- 👤 Junichi Arakawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:51
CPC Classifications
F; F24; F24D; F24D13/00; F24D13/02; F24D13/022; H; H05; H05B; H05B3/00; H05B3/20; H05B3/22; H05B3/28; H05B3/286; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
72 words
A floor heating panel comprising: a substrate; a heating element arranged on the top surface of the substrate; a cover layer placed over said heating element to cover the entire top surface of said substrate; and a cushioning layer disposed on the bottom surface of said substrate; said substrate being formed on its bottom surface with rows of slits by which said substrate is allowed to resiliently flex to a limited extent.
Claim 2
Dependent Claim
72 words
A floor heating panel comprising: a substrate; a heating element arranged on the top surface of the substrate; a cover layer placed over said heating element to cover the entire top surface of said substrate; and a cushioning layer disposed on the bottom surface of said substrate; said substrate being formed on its bottom surface with rows of slits by which said substrate is allowed to resiliently flex to a limited extent.
Claim 3
Dependent Claim
17 words
A floor heating panel as set forth in claim 1 wherein said heating element is made flexible.
Claim 4
Dependent Claim
65 words
A floor heating panel as set forth in claim 1, wherein said heating element comprises an electric resistance heater arranged in a flat flexible configuration and disposed on the top surface of said substrate, and said substrate having a terminal unit for electrical connection of said electric heater to a source of electric power as well as to another heating panel of the like construction.
Claim 5
Dependent Claim
23 words
A floor heating panel as set forth in claim 3, wherein said terminal unit is received within a recess formed in said substrate.
Claim 6
Dependent Claim
129 words
A floor heating panel comprising: a substrate; an electric resistance heater arranged in a flat flexible configuration and disposed on the top surface of the substrate; a cover layer placed over said flat heating element to cover the entire top surface of said substrate; a cushioning layer disposed on the bottom surface of said substrate; said substrate having a terminal unit for electrical connection of said electric resistance heater to a source of electric power as well as to another floor heating panel having the same structural configuration, and said terminal unit includes at least one connector which is slidable along one dimension of said heating panel and includes lead jacks for receiving conductors leading to the electric source and to the adjacent heating panel of the like configuration.
Claim 7
Dependent Claim
129 words
A floor heating panel comprising: a substrate; an electric resistance heater arranged in a flat flexible configuration and disposed on the top surface of the substrate; a cover layer placed over said flat heating element to cover the entire top surface of said substrate; a cushioning layer disposed on the bottom surface of said substrate; said substrate having a terminal unit for electrical connection of said electric resistance heater to a source of electric power as well as to another floor heating panel having the same structural configuration, and said terminal unit includes at least one connector which is slidable along one dimension of said heating panel and includes lead jacks for receiving conductors leading to the electric source and to the adjacent heating panel of the like configuration.
Claim 8
Dependent Claim
23 words
A floor heating panel as set forth in claim 5, wherein said terminal unit is received within a recess formed in said substrate.
Claim 9
Dependent Claim
30 words
A floor heating panel as set forth in claim 5, wherein said connector is capable of being held on its outermost position along the one dimension of said heating panel.
Claim 10
Dependent Claim
115 words
A floor heating panel as set forth in claim 5, wherein said substrate is in the form of a rectangular configuration having a lengthwise dimension greater than a width dimension, said terminal units including a pair of connectors having lead jacks for receiving conductors leading to the source of electric power and to the adjacent heating panel, each of said connectors being slidably held in said recess formed in the bottom surface of said substrate to be movable along the width dimension thereof and capable of being held in its outermost position, and each of said connector having the lead jacks oriented outwardly in said width dimension so as to be accessible from that direction.
Claim 11
Dependent Claim
43 words
A floor heating panel as set forth in claim 8, further including a bottom cover which closes the bottom of said recess and is formed with a guide furrow into which the portion of each connector is slidably received to be guided therealong.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-27 | 1994-02-26 | 1994-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-27 | 1998-02-26 | 1998-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-27 | 2002-02-26 | 2002-08-28 | $7700.00 | Window Closed / Lapsed |