US3254377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid cooled, lubricated and sealed piston means for casting devices
Assignee: Individual
•
Filing: 1963-04-22
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Granted: 1966-06-07
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Expires: 1983-04-22
Abstract
No abstract record available.
Inventors
- 👤 Glenn R Morton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:21
CPC Classifications
B; B22; B22D; B22D17/00; B22D17/08; B22D17/12; B22D17/20; B22D17/2015; B22D17/2038
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
IN COMBINATION, A CYLINDRICAL, A RECIRPOCATING PISTON IN SAID CYLINDER, A RECESSED PORTION IN SAID PISTON TO CREATE A COMPARTMENT BETWEEN SAID PISTON AND THE INTERIOR OF SAID CYLINDER, CONDUITS LEADING TO AND FROM THE INTERIOR OF SAID CYLINDER, SAID COMPARTMENT HAVING A SIZE TO COMMUNICATE WITH SAID CONDUITS AT ONE PORTION OF SAID PISTON''S RECIPROCATING PATH IN SAID CYLINDER, MEANS OPERATIVELY SECURED TO SAID CONDUITS FOR CIRCULATING A FLUID INTO SAID CYLINDER FROM ONE CONDUIT AND WITHDRAWING SAID FLUID THEREFROM THROUGH SAID OTHER CONDUIT, SAID ONE OF SAID CONDUITS BEING CONNECTED TO A VACUUM SOURCE, THE OTHER OF SAID CONDUITS BEING CONNECTED TO A SOURCE OF FLUID, AND MEANS ON SAID PISTON FOR EXPOSING SAID COMPARTMENT TO THE ATMOSPHERE AT ONE STAGE OF ITS RECIPROCAL MOVEMENT.
Claim 2
Dependent Claim
127 words
IN COMBINATION, A CYLINDRICAL, A RECIRPOCATING PISTON IN SAID CYLINDER, A RECESSED PORTION IN SAID PISTON TO CREATE A COMPARTMENT BETWEEN SAID PISTON AND THE INTERIOR OF SAID CYLINDER, CONDUITS LEADING TO AND FROM THE INTERIOR OF SAID CYLINDER, SAID COMPARTMENT HAVING A SIZE TO COMMUNICATE WITH SAID CONDUITS AT ONE PORTION OF SAID PISTON''S RECIPROCATING PATH IN SAID CYLINDER, MEANS OPERATIVELY SECURED TO SAID CONDUITS FOR CIRCULATING A FLUID INTO SAID CYLINDER FROM ONE CONDUIT AND WITHDRAWING SAID FLUID THEREFROM THROUGH SAID OTHER CONDUIT, SAID ONE OF SAID CONDUITS BEING CONNECTED TO A VACUUM SOURCE, THE OTHER OF SAID CONDUITS BEING CONNECTED TO A SOURCE OF FLUID, AND MEANS ON SAID PISTON FOR EXPOSING SAID COMPARTMENT TO THE ATMOSPHERE AT ONE STAGE OF ITS RECIPROCAL MOVEMENT.
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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |