Patent US3629790A successfully refreshed from Google Patents.
US3629790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
No shock electric plug
Assignee: Lee Raymond Organization Inc
•
Filing: 1970-12-04
•
Granted: 1971-12-21
•
Expires: 1990-12-04
Abstract
Abstract A sliding collar is secured to an electric plug having metal prongs by elastic means whereby the prongs are covered by the collar during insertion in and removal from an electrified socket.
Inventors
- 👤 Frank D Mcsherry Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:33
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/44; H01R13/447
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
92 words
In combination with an electric plug having a head with a pair of electrically conductive prongs extending thereout: AN ELECTRICALLY NONCONDUCTIVE CYLINDER OPEN AT BOTH ENDS, SAID PLUG BEING SLIDABLE BACK AND FORTH IN SAID CYLINDER AND SAID CYLINDER BEING SLIDABLE BACK AND FORTH LONGITUDINALLY ALONG THE PLUG; AND ELASTIC MEANS DISPOSED IN THE CYLINDER AND SECURED THEREIN AND TO SAID PLUG, SAID MEANS HAVING A NORMAL FULLY CONTRACTED POSITION AT WHICH SAID CYLINDER EXTENDS BEYOND SAID PRONGS, SAID MEANS BEING CAPABLE OF BEING TEMPORARILY EXTENDED TO EXPOSE PORTIONS OF SAID PRONGS.
Claim 2
Dependent Claim
92 words
In combination with an electric plug having a head with a pair of electrically conductive prongs extending thereout: AN ELECTRICALLY NONCONDUCTIVE CYLINDER OPEN AT BOTH ENDS, SAID PLUG BEING SLIDABLE BACK AND FORTH IN SAID CYLINDER AND SAID CYLINDER BEING SLIDABLE BACK AND FORTH LONGITUDINALLY ALONG THE PLUG; AND ELASTIC MEANS DISPOSED IN THE CYLINDER AND SECURED THEREIN AND TO SAID PLUG, SAID MEANS HAVING A NORMAL FULLY CONTRACTED POSITION AT WHICH SAID CYLINDER EXTENDS BEYOND SAID PRONGS, SAID MEANS BEING CAPABLE OF BEING TEMPORARILY EXTENDED TO EXPOSE PORTIONS OF SAID PRONGS.
Claim 3
Dependent Claim
17 words
The combination as set forth in claim 1 wherein said means is an elastic web or strip.
Claim 4
Dependent Claim
24 words
The combination as set forth in claim 2 wherein opposite ends of the strip are secured to corresponding oppositely disposed points on the cylinder.
Claim 5
Dependent Claim
34 words
The combination as set forth in claim 3 wherein the strip extends between the prongs and the center of the strip is secured to the head at a point centrally disposed between said prongs.
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |