US3076555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid filters
Assignee: Tecalemit Ltd
•
Filing: 1959-06-29
•
Granted: 1963-02-05
•
Expires: 1979-06-29
Abstract
No abstract record available.
Inventors
- 👤 Jackson Harold Ernest
- 👤 Maurice Plympton St
- 👤 Stripp Peter William
- 👤 Farnfield Ronald Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:37
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/024; Y; Y10; Y10S; Y10S55/00; Y10S55/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A METHOD OF FORMING A FILTER ELEMENT FOR FILTERING FLUIDS, WHICH COMPRISES PLEATING A STRIP OF FILTRATION MATERIAL IN SHEET FORM ABOUT FOLD LINES TRANSVERSE TO THE LENGTH OF THE STRIP; FORMING SAID MATERIAL INTO AN ANNULUS WITH THE PLEATS EXTENDING LONGITUDINALLY ON RADII FROM THE CENTRAL AXIS OF THE ANNULUS; APPLYING A BONDING SUBSTANCE EXTERNALLY TO A TUBE TO FORM A SOLID BUT PARTIALLY UNCURED LAYER THEREON; FITTING SAID TUBE WITHIN SAID ANNULUS TO CLOSE THE SPACES BETWEEN THE PLEATS AT THE INNER ENDS THEREOF; APPLYING A RESILIENT BAND OF ELASTOMERIC MATERIAL TO THE OUTER CIRCUMFERENCE OF SAID ANNULUS SO AS TO SURROUND THE LATTER UNDER TENSION AND CLOSE THE SPACES THEREAT BETWEEN SAID PLEATS; THEREAFTER CAUSING THE SAID SUBSTANCE TO SOFTEN TO ALLOW THE OUTER BAND TO FORCE THE INNER EDGES OF SAID PLEATS IN SAID SUBSTANCE ON THE TUBE; AND THEN ALLOWING SAID SUBSTANCE TO HARDEN BONDING THE INNER EDGES TO SAID TUBE.
Claim 2
Independent Claim
156 words
A METHOD OF FORMING A FILTER ELEMENT FOR FILTERING FLUIDS, WHICH COMPRISES PLEATING A STRIP OF FILTRATION MATERIAL IN SHEET FORM ABOUT FOLD LINES TRANSVERSE TO THE LENGTH OF THE STRIP; FORMING SAID MATERIAL INTO AN ANNULUS WITH THE PLEATS EXTENDING LONGITUDINALLY ON RADII FROM THE CENTRAL AXIS OF THE ANNULUS; APPLYING A BONDING SUBSTANCE EXTERNALLY TO A TUBE TO FORM A SOLID BUT PARTIALLY UNCURED LAYER THEREON; FITTING SAID TUBE WITHIN SAID ANNULUS TO CLOSE THE SPACES BETWEEN THE PLEATS AT THE INNER ENDS THEREOF; APPLYING A RESILIENT BAND OF ELASTOMERIC MATERIAL TO THE OUTER CIRCUMFERENCE OF SAID ANNULUS SO AS TO SURROUND THE LATTER UNDER TENSION AND CLOSE THE SPACES THEREAT BETWEEN SAID PLEATS; THEREAFTER CAUSING THE SAID SUBSTANCE TO SOFTEN TO ALLOW THE OUTER BAND TO FORCE THE INNER EDGES OF SAID PLEATS IN SAID SUBSTANCE ON THE TUBE; AND THEN ALLOWING SAID SUBSTANCE TO HARDEN BONDING THE INNER EDGES TO SAID TUBE.
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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) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |