High torque movable barrier actuation at low speeds...

Details High torque movable barrier actuation at low speeds... High torque movable barrier actuation at low speeds...

2008-02-19

2010-10-19

Ip, Paul (Department: 2837)

Electricity: motive power systems

Automatic and/or with time-delay means

Movement, position, or limit-of-travel

C318S280000, C318S283000, C318S266000

Reexamination Certificate

active

07816879

ABSTRACT:
The present invention is a system for high torque operation of a movable barrier utilizing a compact hub motor device, which may be directly coupled to a movable barrier without the use of additional gearing systems. The flat geometry provides high dynamic acceleration with short electrical and mechanical time constants, and its planetary gearing system implemented within the device allows for compact, more efficient access systems. Eliminating a gear system in accordance with the present invention lowers maintenance requirements, increases efficiency, and streamlines operation of movable barriers.

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Viking Access Systems, “Vehicle Gate Operator Q-4” Feb. 2007; Retrieved from Internet <http://web.archive.org/web/20070630124920/http://vikingaccess.com/Q4.html> p. 1.

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