US3870843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical appliance with housing of plastic foam material
Assignee: Individual
•
Filing: 1972-12-22
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Granted: 1975-03-11
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Expires: 1992-12-22
Abstract
Abstract Electrical appliance, such as a flashlight, wherein the battery and light bulb socket are embedded in a plastic housing which is molded around them. Provision is made for the subsequent installation of an on-off switch. The invention also relates to the method of making the appliance.
Inventors
- 👤 Waldemar Witte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:59
CPC Classifications
F; F21; F21L; F21L4/00; F21L4/08; F21L4/085; F21V; F21V15/00; F21V15/01; F21V23/00; F21V23/04; F21V23/0414; F21V31/00; F21V31/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
63 words
A small cordless electrical appliance having a main body, comprising in combination, a plurality of stationary electrical components; said plurality of stationary electrical components being firmly embedded in solidified plastic foam material; said solidified plastic foam material forming a passage; a single slidably movable switching element mounted in said passage; said plastic foam material forming the final outer surface of said main body.
Claim 2
Dependent Claim
63 words
A small cordless electrical appliance having a main body, comprising in combination, a plurality of stationary electrical components; said plurality of stationary electrical components being firmly embedded in solidified plastic foam material; said solidified plastic foam material forming a passage; a single slidably movable switching element mounted in said passage; said plastic foam material forming the final outer surface of said main body.
Claim 3
Dependent Claim
63 words
A small cordless electrical appliance having a main body, comprising in combination, a plurality of stationary electrical components; said plurality of stationary electrical components being firmly embedded in solidified plastic foam material; said solidified plastic foam material forming a passage; a single slidably movable switching element mounted in said passage; said plastic foam material forming the final outer surface of said main body.
Claim 4
Dependent Claim
63 words
A small cordless electrical appliance having a main body, comprising in combination, a plurality of stationary electrical components; said plurality of stationary electrical components being firmly embedded in solidified plastic foam material; said solidified plastic foam material forming a passage; a single slidably movable switching element mounted in said passage; said plastic foam material forming the final outer surface of said main body.
Claim 5
Dependent Claim
18 words
The small cordless electrical appliance as set forth in claim 1, wherein said plastic foam material is polyurethane.
Claim 6
Dependent Claim
18 words
The small cordless electrical appliance as set forth in claim 2, wherein said polyurethane is integral-skin urethane foam.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |