US3815078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable extension cord unit
Assignee: Individual
•
Filing: 1972-08-31
•
Granted: 1974-06-04
•
Expires: 1992-08-31
Abstract
Abstract A retractable extension cord unit including a small housing within which the cord can be stored but formed from two relatively rotatable members whose rotation enables selected extension or retraction of the cord.
Inventors
- 👤 N Fedrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:12
CPC Classifications
H; H02; H02G; H02G11/00; H02G11/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
151 words
A retractable extension cord unit which comprises a housing formed by first and second relatively rotatable members, said first member having an opening therethrough, an electrical connector in said second member, an extension cord electrically connected to said electrical connector within said housing and extending therefrom through said opening, means automatically operative in response to relative rotation of said two housing members in one direction to wind said cord within said housing and in the opposite direction to permit unwinding of said cord through said opening, said automatic winding means including a centerpost connected to said second member and rotatively engaging a center opening in said first member to maintain the aligned relation of said members but enabling the relative rotation thereof, and cord holding means including a member on said second housing member adjacent said centerpost to form a slot dimensioned for the releasable pressed holding of said extension cord.
Claim 2
Dependent Claim
151 words
A retractable extension cord unit which comprises a housing formed by first and second relatively rotatable members, said first member having an opening therethrough, an electrical connector in said second member, an extension cord electrically connected to said electrical connector within said housing and extending therefrom through said opening, means automatically operative in response to relative rotation of said two housing members in one direction to wind said cord within said housing and in the opposite direction to permit unwinding of said cord through said opening, said automatic winding means including a centerpost connected to said second member and rotatively engaging a center opening in said first member to maintain the aligned relation of said members but enabling the relative rotation thereof, and cord holding means including a member on said second housing member adjacent said centerpost to form a slot dimensioned for the releasable pressed holding of said extension cord.
Claim 3
Dependent Claim
140 words
A retractable extension cord unit which comprises a housing formed by first and second relatively rotatable members, said first member having an opening therethrough, an electrical connector in said second member, an extension cord electrically connected to said electrical connector within said housing and extending therefrom through said opening, and means automatically operative in response to relative rotation of said two housing members in one direction to wind said cord within said housing and in the opposite direction to permit unwinding of said cord through said opening, said housing members each having the form of generally shallow cylindrical cups of like diameters arranged in edgewise-abutting relation to form said housing, said cup-shaped housing members being formed of resilient plastic and the respective edges thereof having recesses and protuberances capable of registering interengagement to resiliently hold said members against relative rotation.
Claim 4
Dependent Claim
140 words
A retractable extension cord unit which comprises a housing formed by first and second relatively rotatable members, said first member having an opening therethrough, an electrical connector in said second member, an extension cord electrically connected to said electrical connector within said housing and extending therefrom through said opening, and means automatically operative in response to relative rotation of said two housing members in one direction to wind said cord within said housing and in the opposite direction to permit unwinding of said cord through said opening, said housing members each having the form of generally shallow cylindrical cups of like diameters arranged in edgewise-abutting relation to form said housing, said cup-shaped housing members being formed of resilient plastic and the respective edges thereof having recesses and protuberances capable of registering interengagement to resiliently hold said members against relative rotation.
References Cited (Backward Citations)
US914772A
Cited
US1730104A
Cited
US2007699A
Cited
US2070561A
Cited
US2801303A
Cited
US2856470A
Cited
US2979576A
Cited
US2976374A
Cited
US3056863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |