US4830626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Christmas-tree securable extension cord
Assignee: Individual
•
Filing: 1988-07-27
•
Granted: 1989-05-16
•
Expires: 2008-07-27
Abstract
Abstract An extension cord includes: an extension cord having a plurality of loops formed thereon; and a plurality of sockets each connected with a loop of the cord and each socket having fasteners for securing the socket on a Christmas tree so that the extension cord can be concealedly mounted on a Christmas tree for further connecting plural lighting-bulb sets in the sockets for better decorative effect.
Inventors
- 👤 Tzu-Chen Liu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:12
CPC Classifications
H; H01; H01R; H01R25/00; H01R25/003; F; F21; F21S; F21S4/00; F21S4/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
192 words
An extension cord securable on a Christmas tree comprising: a two-conductor extension cord having one end formed with a plug for connecting a power source and having a plurality of rectangular loops formed thereon; and a plurality of socket means connected on the rectangular loops of said extension cord; the improvement which comprises: each said socket means including a base portion having a rectangular slot formed therein, two electrically conductive plates respectively embedded in two longitudinal slots within said rectangular slot; each said rectangular loop of said extension cord having two cords split from said extension cord respectively engaged in a lower portion of said rectangular slot in said base portion, electrically contacting said two conductive plates embedded in said base portion; an upper cover, having a plurality of pin slots formed therein for receiving a plug, combined with said base portion to form said socket means, each said pin slot being aligned with a said longitudinal slot in said base portion; and said upper cover having at least two fasteners, each fastener operatively clamping a Christmas tree trunk or branch for firmly securing each said socket means on a Christmas tree.
Claim 2
Dependent Claim
192 words
An extension cord securable on a Christmas tree comprising: a two-conductor extension cord having one end formed with a plug for connecting a power source and having a plurality of rectangular loops formed thereon; and a plurality of socket means connected on the rectangular loops of said extension cord; the improvement which comprises: each said socket means including a base portion having a rectangular slot formed therein, two electrically conductive plates respectively embedded in two longitudinal slots within said rectangular slot; each said rectangular loop of said extension cord having two cords split from said extension cord respectively engaged in a lower portion of said rectangular slot in said base portion, electrically contacting said two conductive plates embedded in said base portion; an upper cover, having a plurality of pin slots formed therein for receiving a plug, combined with said base portion to form said socket means, each said pin slot being aligned with a said longitudinal slot in said base portion; and said upper cover having at least two fasteners, each fastener operatively clamping a Christmas tree trunk or branch for firmly securing each said socket means on a Christmas tree.
Claim 3
Dependent Claim
57 words
An extension cord according to claim 1, wherein said rectangular loop of said extension cord includes an expansion end portion by divergently splitting said two-conductor cord into two separate cords engageable with the two longitudinal slots in said base portion, and a contraction end portion by convergently combining the two separate cords to form said two-conductor cord.
Claim 4
Dependent Claim
46 words
An extension cord according to claim 1, wherein a final said socket means terminated on an outermost end of said extension cord includes a Y-shaped bifurcate cord by splitting the two-conductor cord into two separate cords engageable with the two longitudinal slots in said base portion.
Claim 5
Dependent Claim
101 words
An extension cord according to claim 1, wherein said base portion includes a side extension protruding upwardly from a bottom plate of said base portion proximate to an outermost edge of said bottom plate, a central extension protruding upwardly from a central portion of said bottom plate, a rectangular slot defined between said side extension and said central extension for inserting said rectangular loop of said extension cord in said rectangular slot, said rectangular slot including two longitudinal slots on its two longitudinal sides adapted for the insertion of mating plug pins inserted through the pin slots in said upper cover.
Claim 6
Dependent Claim
76 words
An extension cord according to claim 4, wherein said bottom plate of said base portion is formed with two recessed notches engageable with two hook portions of two locking members of the upper cover, so that said upper cover is combined to said base portion by poking said two locking members of said upper cover through two sockets formed in said central extension of said base portion to engage said bottom plate of said base portion.
Claim 7
Dependent Claim
28 words
An extension cord according to claim 4, wherein said bottom plate is formed as an arcuate shape and formed with an anti-slipping surface on a bottom surface thereof.
Claim 8
Dependent Claim
87 words
An extension cord according to claim 1, wherein each said conductive plate includes plural teeth formed on its lower edge poking into a sheathed said conductor of the said extension cord to electrically contact said conductor, and plural bent portions formed on an upper portion of each said conductive plate being crimped or fixed on said central extension so that each said conductive plate is firmly embedded in said base portion within a said longitudinal slot for electrically contacting a plug pin inserted into said socket means.
Claim 9
Dependent Claim
68 words
An extension cord according to claim 1, wherein each said fastener of said upper cover includes a right strip having a plurality of cross bars formed thereon, and a left strip having a plurality of slits formed therein, whereby upon an engagement of the cross bar into the slit, the right strip will be fastened to the left strip for securing said socket means on a Christmas tree.
Claim 10
Dependent Claim
22 words
An extension cord according to claim 8, wherein each said fastener is formed with an anti-slipping surface on a bottom surface thereof.
Claim 11
Dependent Claim
60 words
An extension cord according to claim 1, wherein said side extension of said base portion is formed with a front opening and a rear opening, and said upper cover is also formed with a front and rear opening on its side walls to allow the passing and fixation of said extension cord except said rectangular loop through all said openings.
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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) | 1992-05-15 | 1992-11-14 | 1993-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-15 | 1996-11-14 | 1997-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-15 | 2000-11-14 | 2001-05-16 | $7700.00 | Window Closed / Lapsed |