US4120712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of securing two non-metal surfaces together using a hot melt type fastener heatable by induction heating
Assignee: Boeing Co
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Filing: 1975-12-11
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Granted: 1978-10-17
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Expires: 1995-12-11
Abstract
Abstract A fastening device having a sheet of eddy current conducting material sandwiched between two sheets of heat-activatable plastic material, the sheet of eddy current conducting material having a matrix of apertures, the sheets of heat-activatable plastic material covering the matrix area, and the device including means on an outer surface for releasably holding the device against a non-metallic surface prior to heat activation of the sheets of plastic material by an induction heater apparatus and system.
Inventors
- 👤 Melvin R. Sindt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:33
CPC Classifications
H; H02; H02M; H02M5/00; H02M5/40; H02M5/42; H02M5/44; H02M5/443; H02M5/45; H02M5/4505; B; B29; B29C; B29C65/00; B29C65/02; B29C65/34; B29C65/36; B29C65/3604; B29C65/3644; B29C65/44; B29C65/46; B29C65/48; B29C65/4805; B29C65/481; B29C65/4815; B29C65/483; B29C65/4835; B29C65/50; B29C65/5007; B29C65/5021; B29C65/5057; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/20; B29C66/21; B29C66/40; B29C66/41; B29C66/43; B29C66/47; B29C66/472; B29C66/70; B29C66/72; B29C66/725; B29C66/7252; B29C66/72525; B29C66/74; B29C66/742; B29C66/80; B29C66/81; B29C66/818; B29C66/8181; B29C66/81811; B29C66/83; B29C66/832; B29C66/8322; B29C66/84; B29C66/861; B29C65/3672; B29C65/3676; B29C65/368; B29C65/486; B29C66/45; B29C66/81812; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2848
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
The method of securing a sheet of nonmetallic panelling to a nonmetallic support structure which comprises: selecting a hot melt type fastener having a pressure contact sensitive outer surface portion, a pair of sheets of heat activatable material and an inner eddy current conducting sheet, said eddy current conducting sheet disposed between said pair of sheets of heat activatable material, said pressure contact sensitive outer surface portion comprising a coating disposed on a first of said pair of sheets; positioning said fastener with the pressure contact sensitive outer surface portion thereof against said support structure; applying pressure between said outer surface portion and said support structure by applying forces against said fastener; removing said pressure; positioning said sheet of panelling against said nonmetallic support structure in overlying relationship with respect to said fastener; positioning an induction heater apparatus against said sheet of panelling and in overlying relationship with respect to said fastener; then energizing said induction heater to transmit electrical energy and induce eddy currents in said eddy current conducting sheet for a predetermined time period.
Claim 2
Independent Claim
176 words
The method of securing a sheet of nonmetallic panelling to a nonmetallic support structure which comprises: selecting a hot melt type fastener having a pressure contact sensitive outer surface portion, a pair of sheets of heat activatable material and an inner eddy current conducting sheet, said eddy current conducting sheet disposed between said pair of sheets of heat activatable material, said pressure contact sensitive outer surface portion comprising a coating disposed on a first of said pair of sheets; positioning said fastener with the pressure contact sensitive outer surface portion thereof against said support structure; applying pressure between said outer surface portion and said support structure by applying forces against said fastener; removing said pressure; positioning said sheet of panelling against said nonmetallic support structure in overlying relationship with respect to said fastener; positioning an induction heater apparatus against said sheet of panelling and in overlying relationship with respect to said fastener; then energizing said induction heater to transmit electrical energy and induce eddy currents in said eddy current conducting sheet for a predetermined time period.
References Cited (Backward Citations)
US2039284A
Cited
US3846204A
Cited
US3165431A
Cited
US3649438A
Cited
US3916055A
Cited
US3733231A
Cited
US3730804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-16 | 1982-04-17 | 1982-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-16 | 1986-04-17 | 1986-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-16 | 1990-04-17 | 1990-10-17 | $7700.00 | Window Closed / Lapsed |