Synchronized segmentally interchanging pulley transmission system
US8753236B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2005 |
| Grant date | Jun 17, 2014 |
| Priority date | — |
| Expiry date | Apr 27, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H55/54
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A segmented pulley transmission [20] is provided. A pulley assembly [36] is rotationally mounted on an axle [32]. The pulley assembly [36] includes a core pulley [45] having a first set of mating features on a peripheral surface thereof. A pulley segment set comprises a number of pulley segments [48] slidably mounted in the pulley assembly and arranged in a ring concentric with the core pulley [45]. The pulley segments [48] are individually actuatable out of the pulley assembly into an engaging position and into the pulley assembly into a non-engaging position. The pulley segments [48] have a second set of mating features [52] on an peripheral surface matching the first set of mating features. An endless drive member [47] has corresponding mating features on an inside surface for engaging the first and second sets of mating features of the core pulley [45] and the pulley segments [48] in an engaging position. Contact between the endless drive member [47] and a core pulley defines a contact zone [CZ]. An actuator [80] actuates the pulley segments [48] between the engaging and non-engaging positions when the pulley segments [48] are outside of the contact zone [CZ]. One of the pulley…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.