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US 4,869,126 AGranted
Mechanical mode shifter
AssigneeSundstrand Corporation
InventorDavid E. Russ
Life of this patent
Estimating the term…
Abstract
A mechanical mode shifter is provided including an input and first and second outputs, which rotate simultaneously during a first portion of operation. The first output is coupled to the input for providing a continuous drive to the first output. Timing means including sector gears are coupled to the first output. At a preselected point in time, the timing means cause the engagement of the sector gears with other gears for the purpose of disengaging a jaw clutch and decelerating a shaft on the second output, such that the second output is driven cyclically while the first output is driven continuously.
Claims30
A mechanical mode shifter comprising:
- input means including a primary drive gear;
- first output means including gear means coupled to the primary drive gear of the input means for providing a continuous drive to the first output means;
- timing means including a driven gear coupled to said first output means, geneva means including sector gears attached thereto, and cam means for engagement with the geneva means;
- intermediate gear train means coupled to said timing means driven gear and cyclically coupled to said sector gears of said geneva means;
- and
- second output means coupled to the intermediate gear train means including clutch means, said second output means being disengageable through the engagement of said geneva means and said sector gears attached thereto with said intermediate gear train means, the engagement thereof causing said intermediate gear train means to decelerate and ground a shaft on said second output means and disengage said clutch means;
- whereby the second output means is driven cyclically while the first output means is driven continuously.
4 more elements
A mechanical mode shifter comprising:
- input means including a primary drive gear;
- first output means including gear means coupled to the primary drive gear of the input means for providing a continuous drive to the first output means;
- timing means including a driven gear coupled to said first output means, a geneva including sector gears attached thereto, a first axial cam in mesh relation with said first output means including a gear with a pin cooperable with the geneva for movement thereof, and a second axial cam for locking said geneva upon engagement thereof;
- intermediate gear train means coupled to said timing means driven gear and cyclically coupled to said sector gears of said geneva means;
- and
- second output means coupled to the intermediate gear train means including clutch means, and means for disengaging the clutch means, said second output means being disengageable through the engagement of the geneva and associated sector gears with said intermediate gear train means, the engagement thereof causing said intermediate gear train means to decelerate and ground the shaft on said second output means and disengage said clutch means;
- whereby the second output means is driven cyclically while the first output means is driven continuously.
4 more elements
A mechanical mode shifter, comprising:
- input means including a primary drive gear;
- intermediate means including gear means coupled to the primary drive gear of the input means for providing a continuous drive to said intermediate means, and clutch means;
- timing means including geneva means driven by said intermediate means, and cam means associated with said geneva means including first and second sector gears;
- and
- output means coupled to said intermediate means, said output means being disengageable from said input means through the engagement of said first and second sector gears on said cam means with said intermediate means to decelerate and ground a shaft and disengage the clutch means on said output means, thereby grounding the output means;
- whereby the output means is driven cyclically while the input means is driven continuously.
3 more elements
A mechanical mode shifter, comprising:
- input means including a primary drive gear;
- intermediate means including gear means coupled to the primary drive gear of said input means for providing a continuous drive to said intermediate means, and clutch means;
- timing means including a geneva drive gear in meshing relation with the intermediate means, the geneva drive gear including an axial pin engageable with a geneva wheel coupled to the geneva drive gear, said geneva wheel being coupled to and rotatable with a face cam, said face cam further including first and second sector gears for engagement with said intermediate means;
- and
- output means coupled to said intermediate means, said outside means disengageable from said input means through the engagement of the first and second sector gears on said face cam with the intermediate mean to decelerate and ground a shaft and disengage the clutch means on said output means, thereby grounding the output means;
- whereby the output means is driven cyclically while the input means is driven continuously.
3 more elements
Dependencies are inferred from the claim text.