Patent US157753A successfully refreshed from Google Patents.
Patent US3124306A successfully refreshed from Google Patents.
US3124306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Figure
Assignee: —
•
Filing: —
•
Granted: 1964-03-10
•
Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:38
CPC Classifications
F; F21; F21L; F21L2/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
291 words
A PORTABLE HAND LAMP COMPRISING A CASING INCLUDING A HOLLOW ELONGATED SHANK PORTION AND AN OUTWARDLY FLARING INTEGRALLY CONNECTING HOLLOW HEAD PORTION, SAID SHANK PORTION BEING CLOSED AT ITS END OPPOSITE ITS HEAD PORTION, SAID SHANK PORTION DEFINING A PAIR OF GENERALLY PARALLEL WELLS FOR RECEIVING THE BATTERIES FOR POWERING SAID LAMP, SAID HEAD PORTION BEING SUBSTANTIALLY COAXIAL WITH THE AXIS OF ONE OF SAID WELLS AND HAVING A PLURALITY OF INWARDLY PROJECTING WALL PORTIONS ARRANGED AROUND SAID AXIS BUT SPACED FROM THE OTHER OF SAID PAIR OF WELLS, A RECESS IN EACH OF SAID PROJECTING WALL PORTIONS FACING INWARDLY OF SAID HEAD PORTION, A SPLIT SPRING RING MOUNTED IN SAID RECESSES AND SLIDABLE THEREIN CONCENTRIC TO SAID ONE WELL, SAID SPRING RING HAVING AN OPEN SECTION BETWEEN ITS ENDS, ONE END OF SAID RING BEING FORMED WITH A U LOOP EXTENDING GENERALLY NORMAL TO SAID RING IN A DIRECTION AWAY FROM SAID HEAD FOR OVERLYING AND CONTACTING THE TERMINAL END OF A BATTERY RECEIVED IN SAID OTHER WELL AND ONE OF THE LEGS OF SAID LOOP EXTENDING GENERALLY NORMAL TO SAID RING IN A DIRECTION AWAY FROM SAID SHANK FOR FORMING A RING MANIPULATING PROJECTION, THE OTHER END OF SAID RING BEING FORMED WITH A LATERAL PROJECTION TO PROVIDE A LIMIT STOP FOR SLIDING MOVEMENT OF SAID RING, SAID RING BEING MOVABLE FROM A POSITION WHEREIN SAID LOOP IS IN CONTACT WITH THE SAID TERMINAL END OF A BATTERY IN SAID OTHER WELL TO A POSITION WHEREIN SAID LOOP PORTION IS CLEAR OF THE SAID BATTERY AND WITH THE LATTER POSITIONED RELATIVE TO THE RING WITH ITS BODY WITHIN THE OPEN SECTION BETWEEN THE ENDS OF SAID RING WHEREBY TO PASS THE SAME FOR REMOVING SAID BATTERY FROM SAID LAMP.
References Cited (Backward Citations)
US1689457A
Cited
US2006175A
Cited
US2145368A
Cited
US2226353A
Cited
US2249858A
Cited
US2420634A
Cited
US2420585A
Cited
US2564612A
Cited
US2643327A
Cited
US2681982A
Cited
US2772349A
Cited
US2931005A
Cited
US2806100A
Cited
US2942102A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |