US3220470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soil refrigerating system
Assignee: Individual
•
Filing: 1962-10-08
•
Granted: 1965-11-30
•
Expires: 1982-10-08
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Balch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:33
CPC Classifications
E; E21; E21D; E21D1/00; E21D1/10; E21D1/12; E21D1/14; E02; E02D; E02D3/00; E02D3/11; E02D3/115; Y; Y10; Y10S; Y10S159/00; Y10S159/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
REFRIGERATION APPARATUS COMPRISING: (1) A HOLLOW ELONGATED MEMBER HAVING UPPER AND LOWER CLOSED ENDS, (2) A FLUID SUBSTANTIALLY FILLING SAID HOLLOW ELONGATED MEMBER, (3) AN INSERTABLE MEMBER ADAPTED TO BE POSITIONED WITHIN SAID HOLLOW ELONGATED MEMBER AT A POSITION REMOTE FROM EITHER END, SAID INSERTABLE MEMBER HAVING (A) A CIRCUMFERENTIAL SLEEVE-LIKE INSULATION PORTION HAVING ITS EXTERIOR CONTIGUOUS WITH THE INTERIOR OF SAID HOLLOW ELONGATED MEMBER AND EXTENDING ALONG A PORTION OF THE LENGTH OF SAID HOLLOW ELONGATED MEMBER, THE ENDS OF SAID SLEEVELIKE PORTION BEING SPACED FROM THE ENDS OF SAID HOLLOW ELONGATED MEMBER TO LEAVE SPACES ADJACENT THE ENDS THEREOF IN AN UNINSULATED STATUS, (B) A TUBE-LIKE PORTION OF LESSER DIAMETER THAN SAID SLEEVE-LIKE PORTION EXTENDING TO A POINT ADJACENT SAID LOWER CLOSED END, (C) MEANS JOINING SAID SLEEVE-LIKE PORTION AND SAID TUBE-LIKE PORTION, SAID MEANS HAVING AT LEAST ONE PASSAGEWAY EXTENDING THERETHROUGH, AND
Claim 2
Dependent Claim
145 words
REFRIGERATION APPARATUS COMPRISING: (1) A HOLLOW ELONGATED MEMBER HAVING UPPER AND LOWER CLOSED ENDS, (2) A FLUID SUBSTANTIALLY FILLING SAID HOLLOW ELONGATED MEMBER, (3) AN INSERTABLE MEMBER ADAPTED TO BE POSITIONED WITHIN SAID HOLLOW ELONGATED MEMBER AT A POSITION REMOTE FROM EITHER END, SAID INSERTABLE MEMBER HAVING (A) A CIRCUMFERENTIAL SLEEVE-LIKE INSULATION PORTION HAVING ITS EXTERIOR CONTIGUOUS WITH THE INTERIOR OF SAID HOLLOW ELONGATED MEMBER AND EXTENDING ALONG A PORTION OF THE LENGTH OF SAID HOLLOW ELONGATED MEMBER, THE ENDS OF SAID SLEEVELIKE PORTION BEING SPACED FROM THE ENDS OF SAID HOLLOW ELONGATED MEMBER TO LEAVE SPACES ADJACENT THE ENDS THEREOF IN AN UNINSULATED STATUS, (B) A TUBE-LIKE PORTION OF LESSER DIAMETER THAN SAID SLEEVE-LIKE PORTION EXTENDING TO A POINT ADJACENT SAID LOWER CLOSED END, (C) MEANS JOINING SAID SLEEVE-LIKE PORTION AND SAID TUBE-LIKE PORTION, SAID MEANS HAVING AT LEAST ONE PASSAGEWAY EXTENDING THERETHROUGH, AND
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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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |