US3072951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner pickup head
Assignee: Fabmagic Inc
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Filing: 1961-05-16
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Granted: 1963-01-15
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Expires: 1981-05-16
Abstract
No abstract record available.
Inventors
- 👤 John J Kelnhofer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:24
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/06; A47L9/0666
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
199 words
A VACUUM CLEANER PICKUP HEAD COMPRISING: A TRANSVERSE CASING HAVING A HOLLOW INTERIOR TERMINATING IN A DOWNWARDLY FACING TRANSVERSE OPENING; A TRANSVERSE WIPER; MEANS MOUNTING SAID WIPER IN SAID INTERIOR FOR SWINGING MOVEMENT IN A FORE AND AFT DIRECTION, SAID MEANS INCLUDING AT LEAST ONE BLOCK MEMBER STATIONARILY SECURED IN SAID INTERIOR, SAID BLOCK MEMBER HAVING A TRANSVERSE BORE, THE LOWER CIRCUMFERENTIAL INNER SURFACE OF WHICH IS RADIALLY CUT TO DEFINE AN INVERTED V-SHAPED CHANNEL FACING DOWNWARDLY AND COMMUNICATING WITH SAID BORE; A SWIVELING ROD ROTATABLY HELD IN SAID BORE AND SECURED TO ONE EDGE OF SAID WIPER, THE REMAINING PORTION OF SAID WIPER EXTENDING DOWNWARDLY THROUGH SAID CHANNEL TO PASS THROUGH SAID TRANSVERSE OPENING ENGAGE A SURFACE TO BE CLEANED, WHEREBY FOWARD MOVEMENT OF SAID HEAD OVER SAID SURFACE SWINGS SAID WIPER AGAINST THE REAR EDGE OF SAID OPENING TO EXPOSE A SUCTION RECEIVING AREA BETWEEN THE FRONT SURFACE OF SAID WIPER AND THE FRONT EDGE OF SAID OPENING AND REARWARD MOVEMENT OF SAID HEAD OVER SAID SURFACE SWINGS SAID WIPER AGAINST THE FRONT EDGE OF SAID OPENING TO EXPOSE A SUCTION RECEIVING AREA BETWEEN THE REAR SURFACE OF SAID WIPER AND THE REAR EDGE OF SAID OPENING.
Claim 2
Dependent Claim
199 words
A VACUUM CLEANER PICKUP HEAD COMPRISING: A TRANSVERSE CASING HAVING A HOLLOW INTERIOR TERMINATING IN A DOWNWARDLY FACING TRANSVERSE OPENING; A TRANSVERSE WIPER; MEANS MOUNTING SAID WIPER IN SAID INTERIOR FOR SWINGING MOVEMENT IN A FORE AND AFT DIRECTION, SAID MEANS INCLUDING AT LEAST ONE BLOCK MEMBER STATIONARILY SECURED IN SAID INTERIOR, SAID BLOCK MEMBER HAVING A TRANSVERSE BORE, THE LOWER CIRCUMFERENTIAL INNER SURFACE OF WHICH IS RADIALLY CUT TO DEFINE AN INVERTED V-SHAPED CHANNEL FACING DOWNWARDLY AND COMMUNICATING WITH SAID BORE; A SWIVELING ROD ROTATABLY HELD IN SAID BORE AND SECURED TO ONE EDGE OF SAID WIPER, THE REMAINING PORTION OF SAID WIPER EXTENDING DOWNWARDLY THROUGH SAID CHANNEL TO PASS THROUGH SAID TRANSVERSE OPENING ENGAGE A SURFACE TO BE CLEANED, WHEREBY FOWARD MOVEMENT OF SAID HEAD OVER SAID SURFACE SWINGS SAID WIPER AGAINST THE REAR EDGE OF SAID OPENING TO EXPOSE A SUCTION RECEIVING AREA BETWEEN THE FRONT SURFACE OF SAID WIPER AND THE FRONT EDGE OF SAID OPENING AND REARWARD MOVEMENT OF SAID HEAD OVER SAID SURFACE SWINGS SAID WIPER AGAINST THE FRONT EDGE OF SAID OPENING TO EXPOSE A SUCTION RECEIVING AREA BETWEEN THE REAR SURFACE OF SAID WIPER AND THE REAR EDGE OF SAID OPENING.
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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |