Patent EP0103931A1 successfully refreshed from Google Patents.
EP0103931A1
Expired / Lapsed
EP
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Transmission, in particular for a motor vehicle
Assignee: Bosch Transmission Technology BV
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Filing: 1983-09-13
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Granted: —
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Expires: 2003-09-13
Abstract
Abstract A transmission unit for a motor vehicle comprises an infinitely variable V-belt transmission (1, 13, 2) and a reversing gearing (18) connecting the input shaft (14) to the primary pulley (3,4) of the V-belt transmission (1, 13, 2). The reversing gearing (18) is operated by means of a forward and a reverse signal in order to transmit rotation in an equal or opposite direction. A pitot tube (41) is positioned within a channel (42), carried by the primary pulley (3, 4), to produce a hydraulic signal function of the speed of rotation. Control means (36) actuated by the hydraulic signal are provided in order to prevent the engagement of the reverse gear.
Inventors
- 👤 Theodorus Petrus Maria Cadée
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 23:25
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/16; F16H37/00; F16H37/02; F16H37/021; F16H37/022
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
140 words
A transmission, in particular for a motor vehicle, provided with an infinitely variable V-belt transmission having a primary and a secondary pulley over which the V-belt has been looped, also provided with an input shaft which is connected through a reversing gear to the primary pulley, the said reversing gear being operated by means of a forward and a reverse command, respectively, in such a way as to transmit the same or the opposite direction of rotation, in which transmission the primary pulley is connected to an annular channel which is radially closed from the outside and into which a stationary pitot tube terminates for picking up a hydraulic signal depending on the speed of rotation, characterized by the incorporation of means of control which prevent the reverse signal putting into operation the reversing gear, depending on the hydraulic signal.
Claim 2
Dependent Claim
140 words
A transmission, in particular for a motor vehicle, provided with an infinitely variable V-belt transmission having a primary and a secondary pulley over which the V-belt has been looped, also provided with an input shaft which is connected through a reversing gear to the primary pulley, the said reversing gear being operated by means of a forward and a reverse command, respectively, in such a way as to transmit the same or the opposite direction of rotation, in which transmission the primary pulley is connected to an annular channel which is radially closed from the outside and into which a stationary pitot tube terminates for picking up a hydraulic signal depending on the speed of rotation, characterized by the incorporation of means of control which prevent the reverse signal putting into operation the reversing gear, depending on the hydraulic signal.
Claim 3
Dependent Claim
47 words
A transmission according to claim 1, characterized in that the means of control include a hydraulic valve which is controlled by the hydraulic signal of the pitot tube, that the reverse signal is given through a hydraulic line and that the valve may close this hydraulic line.
Claim 4
Dependent Claim
36 words
A transmission according to claim 2, characterized in that the hydraulic valve is provided with a valve body which is loaded by the hydraulic signal of the pitot tube against the force exerted by a spring.
References Cited (Backward Citations)
DE1081317B
Cited
DE2442951A1
Cited
FR2340486A1
Cited
GB2058251A
Cited
EP0027672A1
Cited
GB2076482A
Cited
GB2092246A
Cited
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