US4114969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plug release mechanism
Assignee: Individual
•
Filing: 1977-09-29
•
Granted: 1978-09-19
•
Expires: 1997-09-29
Abstract
Abstract A plug release mechanism consisting of a spring mounted reciprocatable member to which is attached an electrical plug. The reciprocatable member carries an inner tubular member coaxially therewith, a stationary member between the inner member and the reciprocatable member, a spring acting between the reciprocatable member and the stationary member and a lever mounted on an extension projecting outwardly from the stationary member through the reciprocatable member. An electrical cord is introduced through a sleeve pivotally mounted between the outer ends of the lever, down through the stationary member and connected to the electrical plug in the usual manner. When the cord is aligned with the lever, a tug on the cord will disconnect the plug from the outlet. When the cord is at an angle to the plug, the sleeve will be at a similar angle so that a pull on the cord causes the lever to rotate and disengage from the locked position with the reciprocatable member whereupon the spring activates the reciprocatable member to withdraw the plug from the outlet.
Inventors
- 👤 John P. Borg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:22
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/62; H01R13/629; H01R13/633; H01R13/635
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
232 words
A plug release mechanism comprising: (i) a reciprocatable member having an open end and an end wall closing the opposite end, said member being movable between a locked position and a released position; (ii) a tubular member in the reciprocatable member and coaxial therewith, the inside end of the tubular member being adapted to have mounted thereon an electric plug having terminal prongs thereon and said inner member being mounted for movement with the reciprocatable member between said locked and released positions; (iii) a stationary member mounted within the reciprocatable member and coaxial therewith, said stationary member being positioned between the inner member and the reciprocatable member, said stationary member having an elongated extension projecting outwardly through an orifice formed through the end wall of the reciprocatable member; (iv) a spring acting between the reciprocatable member and the stationary member; and (v) a lever pivotally mounted on the extension, the fulcrum of the lever being located between the end wall and the projecting end of the extension whereby, with the lever coaxial with the reciprocatable member, one end of the lever engages the end wall and holds the inner member in a locked position with the spring under compression so that when the lever is released from the locked position, the inner member is actuated to the released position with the terminal prongs being moved to a position within the stationary member.
Claim 2
Dependent Claim
232 words
A plug release mechanism comprising: (i) a reciprocatable member having an open end and an end wall closing the opposite end, said member being movable between a locked position and a released position; (ii) a tubular member in the reciprocatable member and coaxial therewith, the inside end of the tubular member being adapted to have mounted thereon an electric plug having terminal prongs thereon and said inner member being mounted for movement with the reciprocatable member between said locked and released positions; (iii) a stationary member mounted within the reciprocatable member and coaxial therewith, said stationary member being positioned between the inner member and the reciprocatable member, said stationary member having an elongated extension projecting outwardly through an orifice formed through the end wall of the reciprocatable member; (iv) a spring acting between the reciprocatable member and the stationary member; and (v) a lever pivotally mounted on the extension, the fulcrum of the lever being located between the end wall and the projecting end of the extension whereby, with the lever coaxial with the reciprocatable member, one end of the lever engages the end wall and holds the inner member in a locked position with the spring under compression so that when the lever is released from the locked position, the inner member is actuated to the released position with the terminal prongs being moved to a position within the stationary member.
Claim 3
Dependent Claim
32 words
An electric plug release mechanism according to claim 1 in which the spring is mounted within the reciprocatable member between the end wall thereof and a shoulder formed on the stationary member.
Claim 4
Dependent Claim
30 words
An electric plug release mechanism according to claim 1 including means mounting the lever for relative rotative movement about an axis perpendicular to the movement axis of the reciprocatable member.
Claim 5
Dependent Claim
217 words
An electric plug release mechanism comprising: (i) a reciprocatable cylindrical member having an end wall at one end and being open at the other end, said member being movable between a locked position and a released position; (ii) an inner tubular member depending from the end wall of the reciprocatable member and coaxial therewith, the inside end of the tubular member adapted to have mounted thereon an electric plug having terminal prongs thereon; (iii) a cylindrical stationary member mounted within the reciprocatable member and coaxial therewith, said stationary member being positioned between the inner tubular member and the outer wall of the reciprocatable member, said stationary member having a pair of elongated arms projecting outwardly through orifices formed through the end wall of the reciprocatable member; (iv) a spring acting between the reciprocatable member and the stationary member; and (v) a lever pivotally mounted on the arms, the fulcrum of the lever being located between the end wall and the projecting ends of the arms, whereby with the lever coaxial with the reciprocatable member, one end of the lever engages the end wall and holds the reciprocatable member in a locked position with the spring under compression so that when the lever is released from the locked position, the reciprocatable member is actuated to the release position.
Claim 6
Dependent Claim
217 words
An electric plug release mechanism comprising: (i) a reciprocatable cylindrical member having an end wall at one end and being open at the other end, said member being movable between a locked position and a released position; (ii) an inner tubular member depending from the end wall of the reciprocatable member and coaxial therewith, the inside end of the tubular member adapted to have mounted thereon an electric plug having terminal prongs thereon; (iii) a cylindrical stationary member mounted within the reciprocatable member and coaxial therewith, said stationary member being positioned between the inner tubular member and the outer wall of the reciprocatable member, said stationary member having a pair of elongated arms projecting outwardly through orifices formed through the end wall of the reciprocatable member; (iv) a spring acting between the reciprocatable member and the stationary member; and (v) a lever pivotally mounted on the arms, the fulcrum of the lever being located between the end wall and the projecting ends of the arms, whereby with the lever coaxial with the reciprocatable member, one end of the lever engages the end wall and holds the reciprocatable member in a locked position with the spring under compression so that when the lever is released from the locked position, the reciprocatable member is actuated to the release position.
Claim 7
Dependent Claim
23 words
An electric plug release according to claim 4 having a sleeve pivotally mounted on said arms adjacent the opposite end of the arms.
References Cited (Backward Citations)
US2955273A
Cited
US4045106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |