Patent US2803527A successfully refreshed from Google Patents.
US2803527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable electric fan unit
Assignee: Individual
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Filing: 1956-07-06
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Granted: 1957-08-20
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Expires: 1976-07-06
Abstract
No abstract record available.
Inventors
- 👤 Robert O Lundahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:06
CPC Classifications
F; F04; F04D; F04D25/00; F04D25/02; F04D25/08; F04D25/084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
250 words
A PORTABLE ELECTRIC FAN UNIT COMPRISING A CARRYING CASE OF AN ELECTRICAL INSULATING MATERIAL, SAID CASE COMPPRISING A PAIR OF SEPARABLE MATING SHELL MEMBERS, ONE SHELL MEMBER INCLUDING A TRANSVERSE PARTITION THEREIN DEFINING A LOWER BATTERY COMPARTMENT AND UPPER MOTOR AND FAN ASSEMBLY COMPARTMENT, A FIRST ELECTRICAL CONDUCTING STRIP ELEMENT EXTENDING ACROSS THE BOTTOM AND ONE SIDE OF THE BATTERY COMPARTMENT AND EXTENDING INTO THE UPPER COMPARTMENT, A SECOND ELECTRICAL CONDUCTING STRIP EXTENDING ACROSS THE LOWER SURFACE OF THE PARTITION AND INCLUDING A RESILIENT END PORTION EXTENDING INTO THE UPPER COMPARTMENT ADJACENT ONE SIDE PORTION THEREOF, A PUSH BUTTONN EXTENDING THROUGH THE SIDE PORTION OF THE UPPER COMPART-MENT IN ENGAGEMENT WITH SAID RESILIENT END PORTION, A MOTOR ASSEMBLY SECURED TRANSVERSELY OF THE UPPER SURFACE OF THE PARTITION AND INCLUDING A ROTATABLE FAN FACING ONE SIDE OF SAID UPPER COMPARTMENT, AN AIR INGRESS APERTURE EXTENDING THROUGH THE UPPER END OF THE UPPER COMPAARTMENT IN IN ALIGNMENT WITH FAN, AN AIR EGRESS APERTURE EXTENDING THROUGH THE UPPER END OF THE UPPER COMPARTMENT IN ALIGNMENT WITH THE OUTER PERIPHERY OF SAID FAN, SAID MOTOR ASSEMBLY INCLUDING A PAIR OF ELECTRICAL LEADS EXTENDING THEREFROM, ONE OF SAID LEADS BEING CONNECTED TO THE FIRSTT ELECTRICAL CONDUCTING STRIP, THE OTHER LEAD BEING DISPOSED IN SPACED RELATIONSHIP FORM THE RESILIENT END PORTION OF THE SECOND ELECTRICAL CONDUCTING STRIP FOR ENGAGEMENT THEREWITH TO CLOSE A CIRCUIT TO THE MOTOR ASSEMBLY, AND A BATTERY ASSEMBLY INTERPOSED BETWEEN THE ELECTRICAL CONDUCTING STRIPS FOR PROVIDING ELECTRICAL ENERGY TO THE MOTOR ASSEMBLY.
Claim 2
Dependent Claim
250 words
A PORTABLE ELECTRIC FAN UNIT COMPRISING A CARRYING CASE OF AN ELECTRICAL INSULATING MATERIAL, SAID CASE COMPPRISING A PAIR OF SEPARABLE MATING SHELL MEMBERS, ONE SHELL MEMBER INCLUDING A TRANSVERSE PARTITION THEREIN DEFINING A LOWER BATTERY COMPARTMENT AND UPPER MOTOR AND FAN ASSEMBLY COMPARTMENT, A FIRST ELECTRICAL CONDUCTING STRIP ELEMENT EXTENDING ACROSS THE BOTTOM AND ONE SIDE OF THE BATTERY COMPARTMENT AND EXTENDING INTO THE UPPER COMPARTMENT, A SECOND ELECTRICAL CONDUCTING STRIP EXTENDING ACROSS THE LOWER SURFACE OF THE PARTITION AND INCLUDING A RESILIENT END PORTION EXTENDING INTO THE UPPER COMPARTMENT ADJACENT ONE SIDE PORTION THEREOF, A PUSH BUTTONN EXTENDING THROUGH THE SIDE PORTION OF THE UPPER COMPART-MENT IN ENGAGEMENT WITH SAID RESILIENT END PORTION, A MOTOR ASSEMBLY SECURED TRANSVERSELY OF THE UPPER SURFACE OF THE PARTITION AND INCLUDING A ROTATABLE FAN FACING ONE SIDE OF SAID UPPER COMPARTMENT, AN AIR INGRESS APERTURE EXTENDING THROUGH THE UPPER END OF THE UPPER COMPAARTMENT IN IN ALIGNMENT WITH FAN, AN AIR EGRESS APERTURE EXTENDING THROUGH THE UPPER END OF THE UPPER COMPARTMENT IN ALIGNMENT WITH THE OUTER PERIPHERY OF SAID FAN, SAID MOTOR ASSEMBLY INCLUDING A PAIR OF ELECTRICAL LEADS EXTENDING THEREFROM, ONE OF SAID LEADS BEING CONNECTED TO THE FIRSTT ELECTRICAL CONDUCTING STRIP, THE OTHER LEAD BEING DISPOSED IN SPACED RELATIONSHIP FORM THE RESILIENT END PORTION OF THE SECOND ELECTRICAL CONDUCTING STRIP FOR ENGAGEMENT THEREWITH TO CLOSE A CIRCUIT TO THE MOTOR ASSEMBLY, AND A BATTERY ASSEMBLY INTERPOSED BETWEEN THE ELECTRICAL CONDUCTING STRIPS FOR PROVIDING ELECTRICAL ENERGY TO THE MOTOR ASSEMBLY.
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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) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |