US3146501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Side camming balance spring lock
Assignee: Individual
•
Filing: 1962-09-24
•
Granted: 1964-09-01
•
Expires: 1982-09-24
Abstract
No abstract record available.
Inventors
- 👤 Lowell E Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:44
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/50; E06B3/5054; E06B3/5063
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
112 words
A BALANCE SPRING LOCK FOR USE IN A VERTICAL CHANNEL OF A WINDOW SIDE JAMB COMPRISING A BLOCK SLIDABLE IN EACH SAID CHANNEL, SAID BLOCK HAVING A RECESS IN ONE SURFACE THEREOF, A PIN HAVING A BASE AT ONE END ROTATABLY MOUNTED IN SAID RECESS AND HAVING THE OTHER END PROJECTING FROM SAID BLOCK, SAID PIN BASE HAVING A LOCKING SURFACE NORMALLY LYING WITHIN THE CONFINES OF SAID BLOCK BUT BEING PROJECTABLE BEYOND THE SIDE OF SAID BLOCK INTO ENGAGEMENT WITH THE WALL OF SAID CHANNEL UPON ROTATION OF SAID PIN THROUGH APPROXIMATELY 90*, THE OTHER END OF SAID PIN BEING RECEIVABLE BY A SASH FOR ROTATION UPON PIVOTING OF SAID SASH.
References Cited (Backward Citations)
US2987758A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |