4. Movable or removable closures
  5. With operator for movably mounted closure
  6. Operating lever or link and closure swing about parallel axes

Doorking Inc.

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Apparatus and method for opening and closing a gate

Movable or removable closures – Safety means responsive to obstruction to closure – Closure drive stopping or reversal
Patent

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Apparatus and method for opening and closing a gate

Movable or removable closures – Safety means responsive to obstruction to closure – Closure drive stopping or reversal
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Apparatus and method for opening and closing a gate

Movable or removable closures – Safety means responsive to obstruction to closure – Closure drive stopping or reversal
Patent

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Gate operator providing impact reduction at a fixed end position

Electricity: motive power systems – Motor-reversing
Patent

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Gate operator with extensible actuating arm

Electricity: motive power systems – Motor-reversing – Periodic- or intermittent-reversing
Patent

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