Device for converting a uniform circular movement into a variable or uniform longitudinal movement
US4203329A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 8, 1977 |
| Grant date | May 20, 1980 |
| Priority date | — |
| Expiry date | Aug 8, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19828
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a device for converting a uniform circular movement into a variable or uniform longitudinal movement. The device comprises being arranged an assembly of rods forming the generatrices of a right cylinder having a circular section. The rods may rotate with a constant angular speed. The rods are grooved with notches at equal or different distances between the notches, which grooves house a wire or cable, wound helicoidally on the cylindrical body established by the rods, so that upon the latter rods rotating, the cable generates a longitudinal movement in the direction of the axis of the rods. The movement is uniform on the stretches in which the grooves are equidistant, and is in such a form that if the distance between grooves varies in accordance with differential elements, the longitudinal movement is obtained whose velocities in relation to time would vary from zero to a maximum and again to zero. This makes it possible to establish a distribution of speeds that would respond to a pre-established law of velocities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.