Patent US2698332A successfully refreshed from Google Patents.
Patent US3218876A successfully refreshed from Google Patents.
US3218876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable speed power propelled appliances
Assignee: Hoover Co
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Filing: 1963-07-15
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Granted: 1965-11-23
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Expires: 1983-07-15
Abstract
No abstract record available.
Inventors
- 👤 Christian D Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:34
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/67; A01D34/68; A01D34/6806; A01D34/42; A01D34/46; A01D34/47; A01D34/475; A01D69/00; A01D69/06; A01G; A01G20/00; A01G20/40; A47; A47L; A47L11/00; A47L11/02; A47L11/10; A47L11/40; A47L11/4002; A47L11/4008; A47L11/4063; A47L11/4066; A47L11/4075; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/30; A01D2034/6843; A01D2101/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
AN APPLIANCE ADAPTED TO BE MOVED OVER A SUPPORTING SURFACE UPON PROPELLING TRACTION MEANS, (A) A POWER SOURCE ON SAID APPLIANCE, (B) TRANSMISSION MEANS DRIVINGLY CONNECTED BETWEEN SAID POWER SOURCE AND SAID PROPELLING TRACTION MEANS, (C) SAID TRANSMISSION MEANS INCLUDING AT LEAST ONE ROTATING DRIVING ELEMENT FRICTIONALLY ENGAGING A ROTATAABLE DRIVEN ELEMENT, SAID DRIVING ELEMENT BEING MOVABLE TOWARD AND AWAY FROM SAID DRIVEN ELEMENT, (D) A HANDLE ON SAID APPLIANCE, AND (E) MANUALLY ACTUATABLE FORCE APPLYING MEANS MOVABLY MOUNTED ON SAID HANDLE, (F) SAID MANUALLY ACTUATABLE FORCE APPLYING MEANS BEING CONNECTED THROUGH FORCE MULTIPLYING MEANS TO SAID DRIVING ELEMENT FOR MOVING SAID DRIVING ELEMENT TOWARD AND AWAY FROM SAID DRIVEN ELEMENT AND INFINITELY VARYING BETWEEN MINUMIM AND MAXIMUM LIMITS AND TOTAL FRACTIONAL FORCE BETWEEN SAID DRIVING AND DRIVEN ELEMENTS WHEREBY DURING NORMAL OPERATION OF SAID APPLIANCE SAID DRIVING ELEMENT ALWAYS SLIPS RELATIVE TO SAID DRIVEN ELEMENT AND THE SPEED RATIO OF THE DRIVEN ELEMENT TO THE DRIVING ELEMENT VARIES BETWEEN MIMUMUM AND MAXIMUM VALUES AND DOES NOT REACH ONE TO ONE.
Claim 2
Dependent Claim
171 words
AN APPLIANCE ADAPTED TO BE MOVED OVER A SUPPORTING SURFACE UPON PROPELLING TRACTION MEANS, (A) A POWER SOURCE ON SAID APPLIANCE, (B) TRANSMISSION MEANS DRIVINGLY CONNECTED BETWEEN SAID POWER SOURCE AND SAID PROPELLING TRACTION MEANS, (C) SAID TRANSMISSION MEANS INCLUDING AT LEAST ONE ROTATING DRIVING ELEMENT FRICTIONALLY ENGAGING A ROTATAABLE DRIVEN ELEMENT, SAID DRIVING ELEMENT BEING MOVABLE TOWARD AND AWAY FROM SAID DRIVEN ELEMENT, (D) A HANDLE ON SAID APPLIANCE, AND (E) MANUALLY ACTUATABLE FORCE APPLYING MEANS MOVABLY MOUNTED ON SAID HANDLE, (F) SAID MANUALLY ACTUATABLE FORCE APPLYING MEANS BEING CONNECTED THROUGH FORCE MULTIPLYING MEANS TO SAID DRIVING ELEMENT FOR MOVING SAID DRIVING ELEMENT TOWARD AND AWAY FROM SAID DRIVEN ELEMENT AND INFINITELY VARYING BETWEEN MINUMIM AND MAXIMUM LIMITS AND TOTAL FRACTIONAL FORCE BETWEEN SAID DRIVING AND DRIVEN ELEMENTS WHEREBY DURING NORMAL OPERATION OF SAID APPLIANCE SAID DRIVING ELEMENT ALWAYS SLIPS RELATIVE TO SAID DRIVEN ELEMENT AND THE SPEED RATIO OF THE DRIVEN ELEMENT TO THE DRIVING ELEMENT VARIES BETWEEN MIMUMUM AND MAXIMUM VALUES AND DOES NOT REACH ONE TO ONE.
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |