Drive mechanism for a barrier
US6272943A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2000 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | Jan 14, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2186
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drive mechanism for a barrier or a stop or gate device includes a drive unit having a drive motor (17) to which at least one single-stage step-down gear, worm gear and/or spur gear with an articulation to a pivoting crank (38) is connected, with the crank being mounted on a primary shaft (46) pivoting preferably around a horizontal axis at bearing points on both sides. The shaft is provided with a fixing device (40) for the barrier beam (41) or gate element which can generally pivot at an angle of approximately 90.degree. in addition to abutments for the compensation springs (48) which act upon their spring crank. The drive mechanism further includes a single-part, single-piece drive casing (G) with open, flat securing flange strips (2) on all sides and a receiving flange (14) to secure the drive motor (17) which can be dismantled and removed. The motor shaft (36) of the drive motor is introduced into a gear case (9) which can be closed by a cover (10) and which contains a set-down gear. An output crank (31) is fastened to the gear output shaft (30) and hingedly connected to the pivoting crank (38) of the drive shaft (46) by means of a swivelling arm (37). The pivoting crank (38)…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.