Steel door frame with thermal break

Claim 2

A thermal break frame suitable for framing a wall opening comprising a pair of metal members each having an edge flange along one side, and a one-piece plastic thermal break element adapted to be positioned between and to lockingly engage said edge flanges, thereby connecting said metal members together, said thermal break element having spaced apart, longitudinally extending, oppositely facing, L-shaped channels adapted to receive said edge flanges and to maintain them in spaced relation.

Claim 3

A thermal break frame as claimed in claim 1 wherein said thermal break element is symmetrical in shape, whereby it can be used to assemble right and left hand frames.

Claim 4

A thermal break frame suitable for framing a wall opening comprising a pair of metal members each having an edge flange along one side, a one-piece plastic thermal break element adapted to be positioned between and to lockingly engage said edge flanges, thereby connecting said metal members together, said thermal break element having spaced channels adapted to receive said edge flanges and to maintain them in spaced relation, said thermal break element further having means for engaging and supporting flexible weatherstripping.

Claim 5

A thermal break frame suitable for framing a wall opening comprising a pair of metal members each having an edge flange along one side, a one-piece plastic thermal break element adapted to be positioned between and to lockingly engage said edge flanges, thereby connecting said metal members together, said thermal break element having spaced channels adapted to receive said edge flanges and to maintain them in spaced relation, said thermal break element further having means for engaging and supporting flexible weatherstripping.

Claim 6

A thermal break frame suitable for framing a wall opening comprising a pair of metal members each having an edge flange along one side, a one-piece plastic thermal break element adapted to be positioned between and to lockingly engage said edge flanges, thereby connecting said metal members together, said thermal breaking element having spaced channels adapted to receive said edge flanges and to maintain them in spaced relation, said thermal break element further having a slot adjacent at least one of said channels, and a replaceable flexible weatherstripping element adapted to be inserted into said slot.

Claim 7

A thermal break frame suitable for framing a wall opening comprising a pair of metal members each having an edge flange along one side, a one-piece plastic thermal break element adapted to be positioned between and to lockingly engage said edge flanges, thereby connecting said metal members together, said thermal breaking element having spaced channels adapted to receive said edge flanges and to maintain them in spaced relation, said thermal break element further having a slot adjacent at least one of said channels, and a replaceable flexible weatherstripping element adapted to be inserted into said slot.

Claim 8

A thermal break door frame assembly comprising a first metal member which defines a soffet and has a stop forming flange along one side of said soffet, a second metal member which defines a rabbet and has an edge flange at right angles to said rabbet, and a one-piece plastic thermal break element having spaced apart, longitudinally extending, oppositely facing L-shaped channels adapted to receive said flanges to hold said metal members together, said channels including a first channel for receiving said stop-forming flange and part of said soffet and a second channel for receiving said edge flange and a portion of said rabbet, said thermal break element being effective to maintain said flanges in spaced relation.

Claim 9

A thermal break door frame assembly comprising a first metal member which defines a soffet and has a stop forming flange along one side of said soffet, a second metal member which defines a rabbet and has an edge flange at right angles to said rabbet, and a one-piece plastic thermal break element having spaced apart, longitudinally extending, oppositely facing L-shaped channels adapted to receive said flanges to hold said metal members together, said channels including a first channel for receiving said stop-forming flange and part of said soffet and a second channel for receiving said edge flange and a portion of said rabbet, said thermal break element being effective to maintain said flanges in spaced relation.

Claim 10

A thermal break door frame assembly as claimed in claim 5 wherein said thermal break element is symmetrical in cross-section and includes a pair of slots for selectively receiving replaceable weatherstripping.

Claim 11

A thermal break door frame assembly as claimed in claim 5 wherein said thermal break element includes a longitudinally extending slot between said channels for receiving weatherstripping means.