Patent ID: 11920854
Assignee: JAMISON DOOR COMPANY
Field: Civil engineering (Other fields)
Classification: CPC E  F | IPC E  F

Claim 0:
1. A roll-up door assembly, comprising:
(a) a first curtain;
(b) a second curtain; wherein the first curtain and the second curtain are configured to transition between a lowered position and a raised position, wherein the first curtain and the second curtain at least partially define an internal volume in the lowered position; and
(c) a side frame, wherein the side frame comprises:
(i) an elongated body defining a hollow interior,
(ii) a pair of curtain tracks configured to guide the first curtain and the second curtain between the lowered position and the raised position,
(iii) a heating assembly configured to circulate heated air into the internal volume, and
(iv) at least one inlet assembly configured to provide fluid communication between the heating assembly and a lower temperature conditioned space such that the heating assembly circulates air from the lower temperature conditioned space into the internal volume.