US3130990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Knob spring
Assignee: Rohden Manufacturing Co Inc
•
Filing: 1961-09-11
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Granted: 1964-04-28
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Expires: 1981-09-11
Abstract
No abstract record available.
Inventors
- 👤 William J Leitmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:28
CPC Classifications
G; G05; G05G; G05G1/00; G05G1/08; G05G1/10; G05G1/12; F; F16; F16B; F16B2200/00; F16B2200/10; Y; Y10; Y10S; Y10S116/00; Y10S116/29; Y10T; Y10T292/00; Y10T292/85; Y10T292/854; Y10T403/00; Y10T403/70; Y10T403/7018; Y10T403/7021; Y10T403/7022; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20732; Y10T74/20834; Y10T74/2084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A SPRING FOR MOUNTING IN A KNOB FOR ENGAGEMENT WITH A SHAFT RECEIVED IN SAID KNOB, SAID SPRING COMPRISING A FLAT MOUNTING PORTION ADAPTED TO BE RECEIVED BETWEEN OPPOSED FLATTENED SURFACES OF SAID KNOB AND SHAFT, A SPRING LEAF OF LONGITUDINAL SPREAD Z CONFIGURATION FORMING A PART OF SAID MOUNTING PORTION AND ATTACHED AT OPPOSITE ENDS THERETO, SAID MOUNTING PORTION BEING SLOTTED TO EITHER SIDE OF SAID LEAF TO PROVIDE FOR FREE RESILIENT MOVEMENT OF SAID LEAF RELATIVE THERETO, SAID LEAF BEING COMPOSED OF FLAT INTERCONNECTED END SEGMENTS AND AN INTERMEDIATE SEGMENT, ONE OF SAID END SEGMENTS BEING INCLINED UPWARDLY AND REARWARDLY RELATIVE TO ONE END OF SAID MOUNTING PORTION FOR ENGAGEMENT WITH SAID SHAFT, THE OTHER OF SAID END SEGMENTS BEING INCLINED DOWNWARDLY AND REARWARDLY RELATIVE TO THE OPPOSITE END OF SAID MOUNTING PORTION, SAID INTERMEDIATE SEGMENT INTERCONNECTING THE RESPECTIVE UPPER AND LOWER ENDS OF SAID END SEGMENTS AND EXTENDING DIAGONALLY THROUGH SAID MOUNTING PORTION, SAID SPRING BEING SEMI-CYLINDRICAL AND HAVING COOPERATING ARCUATE PORTIONS JOINED WITH SAID MOUNTING PORTION.
Claim 2
Dependent Claim
170 words
A SPRING FOR MOUNTING IN A KNOB FOR ENGAGEMENT WITH A SHAFT RECEIVED IN SAID KNOB, SAID SPRING COMPRISING A FLAT MOUNTING PORTION ADAPTED TO BE RECEIVED BETWEEN OPPOSED FLATTENED SURFACES OF SAID KNOB AND SHAFT, A SPRING LEAF OF LONGITUDINAL SPREAD Z CONFIGURATION FORMING A PART OF SAID MOUNTING PORTION AND ATTACHED AT OPPOSITE ENDS THERETO, SAID MOUNTING PORTION BEING SLOTTED TO EITHER SIDE OF SAID LEAF TO PROVIDE FOR FREE RESILIENT MOVEMENT OF SAID LEAF RELATIVE THERETO, SAID LEAF BEING COMPOSED OF FLAT INTERCONNECTED END SEGMENTS AND AN INTERMEDIATE SEGMENT, ONE OF SAID END SEGMENTS BEING INCLINED UPWARDLY AND REARWARDLY RELATIVE TO ONE END OF SAID MOUNTING PORTION FOR ENGAGEMENT WITH SAID SHAFT, THE OTHER OF SAID END SEGMENTS BEING INCLINED DOWNWARDLY AND REARWARDLY RELATIVE TO THE OPPOSITE END OF SAID MOUNTING PORTION, SAID INTERMEDIATE SEGMENT INTERCONNECTING THE RESPECTIVE UPPER AND LOWER ENDS OF SAID END SEGMENTS AND EXTENDING DIAGONALLY THROUGH SAID MOUNTING PORTION, SAID SPRING BEING SEMI-CYLINDRICAL AND HAVING COOPERATING ARCUATE PORTIONS JOINED WITH SAID MOUNTING PORTION.
References Cited (Backward Citations)
US2733083A
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US1240940A
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US2149746A
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US2225086A
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US2249837A
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US2293615A
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US2745689A
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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) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |