Device for opening and closing a vehicle top
US4766356A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Dec 3, 1986 |
| Grant date | Aug 23, 1988 |
| Priority date | — |
| Expiry date | Dec 3, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60J7/1273
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A device for opening and closing a vehicle top by rotations of drive shafts rotatably provided with both right and left sides of the vehicle, comprises two individual motors which actuate the individual drive shafts through speed reduction mechanisms, switching relays which switch the direction of rotation of both said motors respectively, switching relay actuation transistors which individually actuate both the switching relays, top-open and top-close command switches which command the opening and closing of said vehicle top, a switch command determination means which ascertains whether the top-open or top-close command switches are operated, an actuation means which conducts the top opening or closing by actuation of said switching relays via said switching relay actuation transistors on the basis of a signal from the switch command determination means when the top-open or top-close command switches are operated, rotation synchronization sensors which are possessed by at least one of the two motors and generate a pulse synchronized to the rotation of the motor, and a rotation synchronization correction means which synchronizes the rotation speed of both the motors when the pulses…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.