US3417976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring box support for rotary hearth furnace and the like
Assignee: PPG Industries Inc
•
Filing: 1966-09-27
•
Granted: 1968-12-24
•
Expires: 1986-09-27
Abstract
No abstract record available.
Inventors
- 👤 Cunningham Hugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:04
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/0037
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
71 words
A RESILIENT MOUNTING MEANS COMPRISING A SELF-CONTAINED SPRING ASSEMBLY HAVING A PLURALITY OF HELICAL COMPRESSION SPRING MEMBERS INTERPOSED BETWEEN A BASE PLATE MEMBER AND A COVER PLATE MEMBER, SAID BASE PLATE MEMBER CARRYING THEREON A PLURALITY OF VERTICAL GUIDE MEMBERS OVER WHICH SAID SPRING MEMBERS ARE RECEIVED AND MEANS FOR ADJUSTING THE SPACING BETWEEN SAID BASE PLATE MEMBER AND SAID COVER PLATE MEMBER AGAINST THE ACTION OF SAID COMPRESSION SPRING MEMBERS.
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) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |