Patent ID: 11873866
Assignee: ZEROSHIFT TRANSMISSIONS LIMITED
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. A transmission system, including:
a first input shaft that is arranged to receive drive directly from a drive source;
a second input shaft that is arranged to receive drive from the drive source via a drive interruption means;
a first lay shaft;
a gear element rotatably mounted on the first input shaft;
a gear element mounted on the first lay shaft; and
a first selector assembly arranged to selectively lock the gear element rotatably mounted on the first input shaft for rotation with the first input shaft and to selectively lock the gear element mounted on the first lay shaft for rotation with the first input shaft,
the first selector assembly comprising a single engagement ring that includes:
a first side including a first set of engagement elements, wherein each engagement element in the first set of engagement elements includes a first drive face arranged to drivingly engage in a first rotational direction a first set of drive formations associated with the gear element rotatably mounted on the first input shaft and a first non-driving face that is arranged to slip with respect to the first set of drive formations in a second rotational direction, thereby preventing driving engagement with the first set of drive formations, and
a second side including a second set of engagement elements, wherein each engagement element in the second set of engagement elements includes a second drive face arranged to drivingly engage in the second rotational direction a second set of drive formations associated with the gear element mounted on the first lay shaft and a second non-driving face that is arranged to slip with respect to the second set of drive formations in the first rotational direction, thereby preventing driving engagement with the second set of drive formations,

wherein each of the first non-driving faces extends circumferentially along a first arcuate path from a first position adjacent its respective first drive face, and the arcuate extent of each first non-driving face is in the range 90° to 360°, and
wherein each of the second non-driving faces extends circumferentially along a second arcuate path from a second position adjacent its respective second drive face, and the arcuate extent of each second non-driving face is in the range 90° to 360°.