US4354723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric plug
Assignee: Individual
•
Filing: 1980-11-28
•
Granted: 1982-10-19
•
Expires: 2000-11-28
Abstract
Abstract An electric plug having a threaded top cap has an internal spring loaded ratchet pin extending into engagement with tapered teeth about the inside of the cap and a manual pin retracting element on the outside of the plug body for removably locking the cap on the body and a ring and prong retainer for an electrical cord extending through the cap into the plug body.
Inventors
- 👤 Hop Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:27
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/58; H01R13/585; H01R13/46; H01R13/502; H01R13/512; H01R13/59
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
120 words
An improved electrical plug having a body with a cap threaded on the rear thereof and engaging a retaining collar about an electric cord comprising a ratchet pin slidably mounted in said body and having a spring urging the pin outwardly from the rear of the body, said cap having interior ratchet teeth facing said body in position for engagement with said ratchet pin whereby said pin rides over said teeth during threading of the cap on the body and locks with said teeth for reverse cap rotation, and release means extending exteriorly of said body for depressing said ratchet pin to retract same from engaging the teeth on said cap and release the cap for unthreading from the body.
Claim 2
Dependent Claim
120 words
An improved electrical plug having a body with a cap threaded on the rear thereof and engaging a retaining collar about an electric cord comprising a ratchet pin slidably mounted in said body and having a spring urging the pin outwardly from the rear of the body, said cap having interior ratchet teeth facing said body in position for engagement with said ratchet pin whereby said pin rides over said teeth during threading of the cap on the body and locks with said teeth for reverse cap rotation, and release means extending exteriorly of said body for depressing said ratchet pin to retract same from engaging the teeth on said cap and release the cap for unthreading from the body.
Claim 3
Dependent Claim
46 words
The improved plug of claim 1 further defined by said release means including a tab slidably disposed in an exterior recess on said body and being connected through a slot in said body to said ratchet pin for manual retraction of the pin against spring pressure.
Claim 4
Dependent Claim
61 words
The improved plug of claim 1 further defined by said ratchet pin having a rectangular cross section fitting a rectangular body opening for preventing pin rotation and said pin having at least one shoulder thereon engaging a spring compressed against a portion of said body for urging an end of the pin toward said cap to engage the ratchet teeth thereon.
Claim 5
Dependent Claim
98 words
The plug of claim 1 further defined by said retaining collar having a tapered axial opening therethrough and a flange thereabout adapted to fit into a rear body recess and to engage the underside of said cap as the cap is threaded onto said body, and gripping means having a ring with limitedly flexible fingers having facing serrated surfaces extending from one side thereof and fitting into said collar opening for compression of said fingers against an electric cord extending therethrough as said gripping means is forced into said collar by said cap being threaded onto said body.
References Cited (Backward Citations)
US4053198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-10-18 | 1986-04-19 | 1986-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-18 | 1990-04-19 | 1990-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-18 | 1994-04-19 | 1994-10-19 | $7700.00 | Window Closed / Lapsed |