Sash window brake
First Claim
Patent Images
1. A sash window brake comprising:
- a main frame of a generally u-shaped configuration so as to have a pair of generally parallel co-extensive legs joined by a base, free ends of said legs including transversely outwardly facing brake pad areas, an internal ramp surface on each leg arranged so that the ramp surfaces converge away from said base, said frame being formed of resilient material so that said legs are resiliently transversely reflectable;
a wedge member generally captively located between said legs and movable generally longitudinally relative thereto, said wedge member having a pair of wedge faces, with each wedge face co-operating with an associated ramp face so that said wedge faces diverge towards said base, said wedge member upon movement away from said base towards the free ends of said legs causing resilient transverse outward deflection of said legs as a result of the co-operation of the wedge and ramp surfaces to move said brake pad areas into frictional engagement with a supporting window frame; and
spring means extending between said base and wedge member biasing said wedge member to deflect said legs transversely outwardly.
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Accused Products
Abstract
A brake is provided for sash windows. The brake comprises a frame having symmetrical and opposed arms, each arm comprising an outwardly facing brake pad area and inwardly, downwardly facing ramps. A wedge member is slidably received between the arms. The ramp and wedges cooperate to spread the arms as the wedge member is withdrawn from the frame.
12 Citations
4 Claims
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1. A sash window brake comprising:
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a main frame of a generally u-shaped configuration so as to have a pair of generally parallel co-extensive legs joined by a base, free ends of said legs including transversely outwardly facing brake pad areas, an internal ramp surface on each leg arranged so that the ramp surfaces converge away from said base, said frame being formed of resilient material so that said legs are resiliently transversely reflectable; a wedge member generally captively located between said legs and movable generally longitudinally relative thereto, said wedge member having a pair of wedge faces, with each wedge face co-operating with an associated ramp face so that said wedge faces diverge towards said base, said wedge member upon movement away from said base towards the free ends of said legs causing resilient transverse outward deflection of said legs as a result of the co-operation of the wedge and ramp surfaces to move said brake pad areas into frictional engagement with a supporting window frame; and spring means extending between said base and wedge member biasing said wedge member to deflect said legs transversely outwardly. - View Dependent Claims (2, 3, 4)
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Specification