US3390873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring
Assignee: Lord Corp
•
Filing: 1966-08-01
•
Granted: 1968-07-02
•
Expires: 1986-08-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Leon Wallerstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:44
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02; F16F1/18; F16F15/00; F16F15/02; F16F15/04; F16F15/06; F16F15/073; F16F3/00; F16F3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
A SPRING COMPRISING SUPPORTING AND SUPPORTED MEMBERS HAVING OPPOSED LONGITUDINALLY EXTENDING FACES IN PARALLEL RELATION TO EACH OTHER, MEANS FOR GUIDING THE SUPPORTED MEMBER FOR LONGITUDINAL MOVEMENT RELATIVE TO THE SUPPORTING MEMBER WHILE MAINTAINING SAID PARALLEL RELATION, A STACK OF A PLURALITY OF SHEETS OF RESILIENT MATERIAL SUBSTANTIALLY FILLING THE SPACE BETWEEN SAID FACES, ADJACENT SHEETS IN THE STACK BEING IN FACE TO FACE SLIDING ENGAGMENT, CONNECTIONS AT ONE END OF THE STACK BETWEEN THE EDGES OF THE ADJACENT SHEETS, OTHER CONNECTIONS AT THE OPPOSITE END OF THE STACK IN STAGGERED RELATION TO THE FIRST CONNECTIONS AND BETWEEN EDGES OF DIFFERENT ADJACENT SHEETS WHEREBY THE SHEETS ARE CONNECTED LONGITUDINALLY IN SERIES FROM EDGE TO EDGE, A LOAD TRANSMITTING CONNECTION TO THE SUPPORTED MEMBER AT ONE SIDE OF THE STACK LOADING THE SHEETS EDGEWISE, A LOAD RECEIVING CONNECTION TO THE SUPPORTING MEMBER AT THE OPPOSITE SIDE OF THE STACK, AND MEANS FOR STIFFENING THE JOINED EDGES OF THE SHEETS TO RESTRAIN BENDING OF THE JOINED EDGES TRANSVERSE TO THE THICKNESS OF THE SHEETS OF INCREASE THE LOAD CARRYING ABILITY OF THE SPRING.
Claim 2
Dependent Claim
181 words
A SPRING COMPRISING SUPPORTING AND SUPPORTED MEMBERS HAVING OPPOSED LONGITUDINALLY EXTENDING FACES IN PARALLEL RELATION TO EACH OTHER, MEANS FOR GUIDING THE SUPPORTED MEMBER FOR LONGITUDINAL MOVEMENT RELATIVE TO THE SUPPORTING MEMBER WHILE MAINTAINING SAID PARALLEL RELATION, A STACK OF A PLURALITY OF SHEETS OF RESILIENT MATERIAL SUBSTANTIALLY FILLING THE SPACE BETWEEN SAID FACES, ADJACENT SHEETS IN THE STACK BEING IN FACE TO FACE SLIDING ENGAGMENT, CONNECTIONS AT ONE END OF THE STACK BETWEEN THE EDGES OF THE ADJACENT SHEETS, OTHER CONNECTIONS AT THE OPPOSITE END OF THE STACK IN STAGGERED RELATION TO THE FIRST CONNECTIONS AND BETWEEN EDGES OF DIFFERENT ADJACENT SHEETS WHEREBY THE SHEETS ARE CONNECTED LONGITUDINALLY IN SERIES FROM EDGE TO EDGE, A LOAD TRANSMITTING CONNECTION TO THE SUPPORTED MEMBER AT ONE SIDE OF THE STACK LOADING THE SHEETS EDGEWISE, A LOAD RECEIVING CONNECTION TO THE SUPPORTING MEMBER AT THE OPPOSITE SIDE OF THE STACK, AND MEANS FOR STIFFENING THE JOINED EDGES OF THE SHEETS TO RESTRAIN BENDING OF THE JOINED EDGES TRANSVERSE TO THE THICKNESS OF THE SHEETS OF INCREASE THE LOAD CARRYING ABILITY OF THE SPRING.
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) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |