Thermal insulated doorsill apparatus with insulating spacer fastener

• US 4,399,636 A
• Filed: 10/21/1981
• Issued: 08/23/1983
• Est. Priority Date: 10/21/1981
• Status: Expired due to Fees

• Current Assignee: Pozzi Window Company Incorporated
• Original Assignee: Pozzi Window Company Incorporated
• Inventors: Blackwell, Donald W.
• Primary Examiner(s): KANNAN, PHILIP
• Application Number:
  US06/313,452
• Time in Patent Office: 671 Days
• Field of Search: 49/467, 49/468, 49/469, 49/470, 49/425, 49/DIG. 1, 160/90, 160/91
• US Class Current: 49/469
• CPC Class Codes: E06B 3/26347 specially adapted for sliding doors or windows
• CPC Class Codes: Y10S 49/01 Thermal breaks for frames

Abstract

A doorsill apparatus for a sliding glass patio door or other exterior door is described including a heat insulating spacer fastener for securing inner and outer sill members of metal against relative movement. The heat insulating spacer fastener is preferably a synthetic plastic clip member. The plastic clip member is of a general W-shape and fastens the inner and outer doorsill members together by clipping onto first and second projections extending from such sill members. In addition, a moisture barrier member of synthetic plastic material is provided over the joint formed by the insulating spacer clip and extends along the upper surfaces of the sill members to prevent moisture from condensing and forming frost on the inside of the glass patio door.

Claims

1. Doorsill apparatus for installation beneath an exterior door, comprising:

an outer doorsill member of metal extending outside of said door and having a first projection thereon;

an inner doorsill member of metal extending inside of said door having a second projection thereon;

spacer clip means of synthetic plastic material for fastening said outer sill member and said inner sill member together against relative movement by clipping onto said first and second projections, said clip means spacing said outer sill member from said inner sill member for heat insulation thereof and including a bridge portion extending across the space between said inner and outer sill members providing a substantially continuous upper surface from said inner sill member to said outer sill member.

2. Apparatus in accordance with claim 1 in which the first and second projections project downward into first and second channel portions of a spacer clip member and the bridge portion extends between said channel portions to provide said continuous upper surface as a substantially flat surface.

3. Apparatus in accordance with claim 2 in which the projections are each provided with a shoulder intermediate the opposite ends of the projection and the channel portions of the clip member are each provided with an inner flange at the entrance of the channel which engages said shoulder to hold said projections in said channel portions.

4. Apparatus in accordance with claim 2 in which said bridge portion extends across the space between said inner and outer sill members to provide a continuous upper surface from the base end of the first projection to the base end of the second projection.

5. Apparatus in accordance with claim 4 which also includes a moisture barrier member of synthetic plastic material extending over said clip member along the continuous upper surface between said outer sill member and said inner sill member.

6. Apparatus in accordance with claim 1 in which the inner sill member is provided with a track means for the bottom of a sliding glass door.

7. Apparatus in accordance with claim 6 in which the track means includes a track rail means for engagement with rollers on said sliding door, said track rail means projecting from the top of said inner sill member so that the bottom of said sliding door is spaced above said clip means.

8. A sliding door assembly, comprising:

at least one sliding glass door mounted within a door frame for horizontal sliding movement;

an inner doorsill member of metal attached to said frame and extending beneath the sliding door to the inside of said doors;

an outer doorsill member of metal extending beneath the sliding door to the outside of said door; and

spacer means of non-metallic heat insulation material for fastening said outer sill member to said inner sill member against relative movement and spacing said inner sill member from said outer sill member for heat insulation thereof, said spacer means including a clip member of a generally W-shape cross-section including two pairs of legs of substantially equal length with each pair of legs separated by a channel into which extends one of the inner and outer sill members.

9. An assembly in accordance with claim 8 in which the spacer means is a clip member of synthetic plastic material which is fastened to the inner and outer sill members by clipping onto first and second projections extending from said inner and outer sill members.

10. An assembly in accordance with claim 9 in which said first and second projections project into first and second channel positions of said clip member which are joined by an intermediate bridge portion extending between said channel portions.

11. An assembly in accordance with claim 8 in which the outer sill member is a threshold member which extends under a fixed glass door panel to the exterior side thereof.

12. An assembly in accordance with claim 8 in which the inner sill member is provided with a track means for guiding the movement of the sliding glass door and includes a track rail portion which engages rollers on the bottom of said sliding door so that said bottom is spaced above said spacer means.

13. An assembly in accordance with claim 8 in which a moisture barrier member of synthetic plastic material extends over the spacer means along the upper surfaces of said inner and outer sill members.

14. An assembly in accordance with claim 13 in which the moisture barrier member includes a vertical end portion having a plurality of vertically spaced horizontal projections which are engaged by weather strip sealing means provided on the bottom of the sliding door.