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Non-circular gear

About: Non-circular gear is a research topic. Over the lifetime, 10001 publications have been published within this topic receiving 94403 citations.


Papers
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Patent
30 Jan 2007
TL;DR: In this article, a powered surgical cutting and fastening instrument includes a drive shaft; a motor; and a gear shifting assembly connected to the drive shaft and the motor, which is used for operating the gear shift assembly in a first gear setting.
Abstract: A powered surgical cutting and fastening instrument includes a drive shaft; a motor; and a gear shifting assembly connected to the drive shaft and the motor. The gear shifting assembly may include at least a first stage gear assembly coupled to the motor and to the drive shaft for operating the gear shifting assembly in a first gear setting; and a gear coupling assembly for selectively coupling at least one additional gear to the drive shaft for operating the gear shifting assembly in a second gear setting.

961 citations

Journal ArticleDOI
TL;DR: In this article, the design and performance of a magnetic gear, which employs rare-earth magnets, has been described, which simulation studies have shown to have a transmitted torque density exceeding 100 kNm/m/sup 3.
Abstract: Mechanical gearboxes are used extensively to match the operating speed of prime-movers to the requirements of their loads. Although, high system torque densities can be achieved, gear lubrication and cooling are often required, whilst noise, vibration and reliability can be significant issues. The paper describes the design and performance of a magnetic gear, which employs rare-earth magnets, which simulation studies have shown to have a transmitted torque density exceeding 100 kNm/m/sup 3/.

943 citations

Journal ArticleDOI
01 Mar 2004
TL;DR: In this paper, a new magnetic gear topology which combines a highly competitive torque transmission capability and a very high efficiency is described, which is based on the magnetic circuit topology.
Abstract: Magnetic gears offer significant potential advantages compared with mechanical gears, such as reduced maintenance and improved reliability, inherent overload protection, and physical isolation between the input and output shafts. However, to date they have received relatively little attention, probably due to the relatively poor torque transmission capability of the magnetic circuit topologies which have been proposed. A new magnetic gear topology which combines a highly competitive torque transmission capability and a very high efficiency is described.

582 citations

Patent
16 Apr 2004
TL;DR: In this article, a marine propulsion system uses a cone clutch in such a way that, when in a forward gear position, torque is transmitted from an input shaft or driving shaft, to an output shaft, or driven shaft, solely through the cone clutch.
Abstract: A transmission for a marine propulsion system uses a cone clutch in such a way that, when in a forward gear position, torque is transmitted from an input shaft, or driving shaft, to an output shaft, or driven shaft, solely through the cone clutch. When in forward gear position, driving torque between the driving and driven shafts is not transmitted through any gear teeth. When in reverse gear position, torque is transmitted through an assembly of the bevel gears.

576 citations

Patent
13 May 1998
TL;DR: In this article, a synchronized gear shift mechanism for a marine propulsion system is described, which uses a hub and a sleeve that are axially movable relative to an output shaft but rotationally fixed to the shaft and to each other.
Abstract: A synchronized gear shift mechanism is provided for a marine propulsion system. Using a hub and a sleeve that are axially movable relative to an output shaft but rotationally fixed to the shaft and to each other, the gear shift mechanism uses associated friction surfaces to bring the output shaft up to a speed that is synchronism with the selected forward or reverse gear prior to mating associated gear tooth surfaces together to transmit torque from an input shaft to an output shaft. The friction surfaces on the forward and reverse gears can be replaceable to facilitate repair after the friction surfaces experience wear.

571 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202351
2022115
20218
202011
201911
201827