US3311222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor
Assignee: SPX Technologies Inc
•
Filing: 1965-05-20
•
Granted: 1967-03-28
•
Expires: 1985-05-20
Abstract
No abstract record available.
Inventors
- 👤 Louis L Crawford
- 👤 Thor E Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:14
CPC Classifications
B; B65; B65G; B65G21/00; B65G21/20; B65G21/22; B65G17/00; B65G17/06; B65G17/067
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
IN A CONVEYOR; A FRAME, SPROCKETS ROTATABLY MOUNTED AT EACH END OF SAID FRAME, EACH SPROCKET HAVING AN ANNULAR GROOVE, A CONTINUOUS CABLE TRAINED OVER SAID OPPOSED SPROCKETS AT EACH SIDE OF SAID FRAME IN THEIR RESPECTIVE GROOVES, UPPER AND LOWER LONGITUDINALLY EXTENDING SUPPORTS AT EACH SIDE OF SAID FRAME, AN UPPER SUPPORT IN A GENERALLY CENTRAL ZONE BETWEEN SAID UPPER SIDE SUPPORTS, EACH OF SAID SUPPORTS HAVING A WEAR STRIP AT ITS UPPER SURFACE, SAID WEAR STRIPS EACH HAVING A RELATIVELY LOW SOEFFICIENT OF FRICTION, LOAD CARRYING MEMBERS EXTENDING TRANSVERSELY OF SAID FRAME, EACH LOAD CARRYING MEMBER HAVING A PLANAR PORTION AND HAVING A MARGINAL PORTION UNDERLYING AN ADJACENT LOAD CARRYING MEMBER, EACH OF SAID MARGINAL PORTIONS INCLUDING A FIRST FLANGE HAVING A PLANAR UPPER SURFACE WHICH SUPPORTS AN ADJACENT LOAD CARRYING MEMBER, A FIRST WEB JOINING SAID FIRST FLANGE AND SAID PLANAR PORTION AND BEING DIMENSIONED SO THAT THE UPPER SURFACE OF ADJACENT PLANAR PORTIONS LIE IN A PLANE, A
Claim 2
Dependent Claim
162 words
IN A CONVEYOR; A FRAME, SPROCKETS ROTATABLY MOUNTED AT EACH END OF SAID FRAME, EACH SPROCKET HAVING AN ANNULAR GROOVE, A CONTINUOUS CABLE TRAINED OVER SAID OPPOSED SPROCKETS AT EACH SIDE OF SAID FRAME IN THEIR RESPECTIVE GROOVES, UPPER AND LOWER LONGITUDINALLY EXTENDING SUPPORTS AT EACH SIDE OF SAID FRAME, AN UPPER SUPPORT IN A GENERALLY CENTRAL ZONE BETWEEN SAID UPPER SIDE SUPPORTS, EACH OF SAID SUPPORTS HAVING A WEAR STRIP AT ITS UPPER SURFACE, SAID WEAR STRIPS EACH HAVING A RELATIVELY LOW SOEFFICIENT OF FRICTION, LOAD CARRYING MEMBERS EXTENDING TRANSVERSELY OF SAID FRAME, EACH LOAD CARRYING MEMBER HAVING A PLANAR PORTION AND HAVING A MARGINAL PORTION UNDERLYING AN ADJACENT LOAD CARRYING MEMBER, EACH OF SAID MARGINAL PORTIONS INCLUDING A FIRST FLANGE HAVING A PLANAR UPPER SURFACE WHICH SUPPORTS AN ADJACENT LOAD CARRYING MEMBER, A FIRST WEB JOINING SAID FIRST FLANGE AND SAID PLANAR PORTION AND BEING DIMENSIONED SO THAT THE UPPER SURFACE OF ADJACENT PLANAR PORTIONS LIE IN A PLANE, A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-27 | 1970-09-26 | 1971-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-27 | 1974-09-26 | 1975-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-27 | 1978-09-26 | 1979-03-28 | $7700.00 | Window Closed / Lapsed |