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

Claim 18:
19. A roll-up door assembly, comprising:
(a) a pair of curtains configured to transition between a lowered position and a raised position, wherein the pair of curtains at least partially define an internal volume in the lowered position; and
(b) 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 pair of curtains between the lowered position and the raised position,
(iii) a heating assembly configured to circulate heated air into the internal volume, wherein the heating assembly is located adjacent to a top portion of the elongated body,
(iv) an inlet in fluid communication with the heating assembly, wherein the inlet is located adjacent to the top portion of the elongated body, and
(v) an outlet in fluid communication with the heating assembly and the hollow interior, wherein the outlet is located adjacent to a bottom portion of the elongated body.