US 12,467,297 B1
Window balance assembly with improved brake arrangement
Luke Liang, Somerset, NJ (US); and Joe Blackwell, Brick, NJ (US)
Assigned to Vision Industries Group, Inc., Somerset, NJ (US)
Filed by Vision Industries Group, Inc., Somerset, NJ (US)
Filed on Nov. 21, 2023, as Appl. No. 18/515,600.
Application 18/515,600 is a continuation in part of application No. 18/363,110, filed on Aug. 1, 2023.
Claims priority of provisional application 63/514,159, filed on Jul. 18, 2023.
Int. Cl. E05D 13/00 (2006.01); E05D 15/22 (2006.01)
CPC E05D 13/1292 (2013.01) [E05D 13/1276 (2013.01); E05D 15/22 (2013.01); E05Y 2201/10 (2013.01); E05Y 2201/21 (2013.01); E05Y 2201/25 (2013.01); E05Y 2201/26 (2013.01); E05Y 2900/148 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A window balance assembly comprising:
a housing, said housing defining a first interior space and a second interior space;
a receiver, said receiver being rotatably supported in said first interior space, said receiver comprising:
a hub; and
at least one cam, said at least one cam positioned on a first side of said hub;
a curl spring, said curl spring comprising: a first portion disposed within said second interior space and comprising: a plurality of convolutions; and a second portion, said second portion configured to extend outside of said second interior space;
at least one braking member, said at least one braking member being slidably mounted in said housing, and being configured to slide from a first position to a second position at which a portion of said at least one braking member protrudes outside of said housing; and
wherein when said receiver is rotated from a first position to a second position, said at least one cam drives said at least one braking member from said first position to said second position where said portion of said at least one braking member protruding out from said housing engages with a wall of a master window frame to releasably maintain a position of said window balance assembly with respect to the master window frame.