초록 ▼

A skylight, having a wing actuated by pneumatic springs, can be moved to an emergency opening position thereby substantially exposing the opening area of the skylight case. The skylight also acts as a residential ceiling or attic skylight which has, in the normal open position, a considerably smalle

A skylight, having a wing actuated by pneumatic springs, can be moved to an emergency opening position thereby substantially exposing the opening area of the skylight case. The skylight also acts as a residential ceiling or attic skylight which has, in the normal open position, a considerably smaller opening than in the emergency open position. A locking device is provided to restrict the long extension stroke of the piston rod of the pneumatic springs to a partial stroke. This partial stroke allows an opening which essentially corresponds to the standard opening of the wing in a residential skylight. The locking device, located on the cylinder of the pneumatic spring, includes a specially designed latch which, in order to effect partial stroke restriction of the piston rod, lockingly engages a stop located on the side of the case by means of a catch pin.

대표청구항 ▼

A skylight comprising (a) a case defining an opening; (b) a wing mounted thereon for pivoting about a horizontal axis; (c) a weight-balancing means including at least one extendable pneumatic spring comprising a cylinder, a piston movable therein and an extendable piston rod coupled to the piston, t

A skylight comprising (a) a case defining an opening; (b) a wing mounted thereon for pivoting about a horizontal axis; (c) a weight-balancing means including at least one extendable pneumatic spring comprising a cylinder, a piston movable therein and an extendable piston rod coupled to the piston, the cylinder having a free end pivotably attached to said wing and the piston rod having an eye at a free end thereof pivotably attached to said case, the eye having a stop surface thereon, and said pneumatic spring being capable of extending under a pneumatic force sufficient to pivot said wing with respect to said case about said horizontal axis from a first closed position to a second opened position in which the opening defined by the case is substantially exposed; (d) a bearing fixed to the case for mounting the eye of the piston rod; (e) a hollow cylindrical sleeve surrounding, and fixedly coupled to the cylinder of the pneumatic spring; and (f) locking means operatively connected to the pneumatic spring for releasably locking the pneumatic spring in a partially extended position wherein the wing is held in a third position intermediate the first and second positions with respect to said case, the locking means comprising (1) a latch having a first and a second end, the first latch end being pivotably mounted on the hollow cylindrical sleeve for pivoting about an axis extending substantially perpendicular to a longitudinal axis of the piston rod, and the second latch end having a catch for engaging the stop surface of the eye.