Claims
- 1. A method of making a transparent reach-in door for a refrigerated product merchandiser, comprising the steps of:providing a thermally and electrically insulating spacer member having an inner central separator body portion with an outer wall forming side sealing flanges on each side of the body portion; applying a locking key member to secure the ends of the spacer member to thereby define a continuous peripheral edging for a glass panel subassembly; forming an unsealed captured glass panel subassembly by: (1) preassembling the spacer member on first and second glass lites with the separator body portion engaging the opposed inner surfaces of the glass lites and the peripheral margins of the lites being captured by the sealing side flanges of the spacer member to form the glass panel subassembly; and (2) applying a moisture barrier material to the outer wall surface of the spacer and locking key members; and molding a non-metal frame to peripherally encase and seal the captured glass panel subassembly to form a reach-in door having opposed vertical inner hinge and outer handle side edges.
- 2. The method of claim 1, including providing heating means on the inner surface of one of the first and second glass lites, and providing an electrical connection to the heating means through the locking key member.
- 3. The method of claim 2, including positioning the one glass lite having the inner surface heating means to be on the outer side of the door remote from the product merchandiser.
- 4. The method of claim 2, including positioning the one glass lite having the inner surface heating means to be located on the inner side of the door nearest to the product merchandiser.
- 5. The method of claim 4 in which the other of said first and second glass lites is formed of low-E glass.
- 6. The method of claim 5, including providing three glass lites captured and spaced by the spacer member and of which the middle glass lite is the other glass lite.
- 7. The method of claim 2, in which the electrical connection through the locking key member provides a pair of electrical leads, and including the step of orienting the key member leads to extend in opposite vertical directions, and adhering conductive connector means to extend the key member leads to the opposed top and bottom margins of the panel.
- 8. The method of claim 7 wherein said conductive connector means includes conductors and bus bars, the step of adhering the conductive connector means comprises the step of adhering the conductors to the separator body portion along one of the sides of the spacer member prior to preassembling the spacer member with the glass lites.
- 9. The method of claim 8, including locating the conductors along a remote side of the spacer member from te one glass lite having heating means on its inner surface.
- 10. The method of claim 9 wherein the step of adhering said conductive connector means comprises the step of adhering the bus bars to the opposed top and bottom margins of the separator body portion along the side of the spacer member in contact with the one glass lite.
- 11. The method of claim 10 comprising the step of placing crossover connector means in the spacer member in a position for making electrical contact between the conductors and the bus bars.
- 12. The method of claim 2 wherein the step of preassembling the spacer member on the first and second glass lites further includes first assembling a third lite with the spacer member in position to be located between the first and second lites.
- 13. The method of claim 12 including forming the third lite from low-E glass.
- 14. The method of claim 13 including positioning one of the first and second lites on the side of the third lite nearest to the product merchandiser.
- 15. The method of claim 1 wherein the step of applying the moisture barrier material further includes applying the moisture barrier material so as to overlap a predetermined outer surface area of said glass lites adjacent to the peripheral marginal edges thereof.
- 16. The method of claim 15 including selectively applying sealant to the locking key member to promote bonding and sealing thereof to the molded frame.
- 17. The method of claim 1 wherein the step of molding the non-metal frame includes molding horizontally extending reinforcing means into the frame adjacent to said inner hinge side edge for reinforcing the hinged connection of the door when installed on a product merchandiser.
- 18. The method of claim 1 further comprising an assembly step following said molding step of inserting torsion means and torque adjustment means for said torsion means into the molded frame whereby adjustment of the closing force applied to the door by said torsion means may be adjusted by accessing the torque adjustment means on the door frame.
- 19. The method of claim 1 further comprising the steps of:locating the first glass lite so that in use of the door on the merchandiser the first glass lite is positioned nearest to the product area of the merchandiser and locating the second lite in an outwardly spaced relation with the first lite, forming one of said first and second glass lites from a low-E glass and forming a heat conductive film on the other of said lites.
- 20. The method of claim 19 in which said first lite is said other of said lites, and forming the heat conductive film on the interiorly facing surface of said first lite opposed to said second lite.
- 21. The method of claim 20 including providing a third glass lite on the panel outwardly of the first and second glass lites whereby the middle glass lite of the panel is formed of low-E glass.
- 22. The method of claim 1 further comprising the step of applying a moisture barrier material to overlap a predetermined outer surface area of said glass lites adjacent to the peripheral marginal edges thereof.
- 23. The method of claim 1 wherein the step of molding the non-metal frame includes molding horizontally extending reinforcing means into the frame adjacent to said inner hinge side edge for reinforcing the inner hinged side of the door when installed on a product merchandiser.
- 24. The method of claim 1 further comprising an assembly step following said molding step of inserting torsion means and torque adjustment means for said torsion means into the molded frame whereby adjustment of the closing force applied to the door by said torsion means may be adjusted by accessing the torque adjustment means on the door frame.
- 25. The method of forming a non-metallic, thermally insulated, transparent door for a reach-in merchandiser, in which said door has first and second glass lites, comprising the steps of:providing a thermally and electrically insulating one-piece spacer member having an outer wall portion and a separator body portion projecting from the inner side of the wall portion and forming a sealing flange on an outer side along the body portion; forming angled notches in the separator body portion to define the respective corners of the first and second glass lites; folding the spacer member at the angled notches to extend along-the sides of one of the glass lites with the body portion in surface contact with the inner surface of the first glass lite and the sealing flange in engagement with the adjacent marginal edges thereof; bringing the free ends of the spacer member into juxtaposition and securing them together with locking means for holding the spacer member in assembled peripheral contact around the one glass lite; positioning the other glass lite in surface contact with the body portion of the spacer member and spaced relation with the one glass lite to form a glass subassembly of said spacer with the first and second glass lites; and molding a non-metallic frame of a preselected plastic material to peripherally encase the subassembly of glass lites and spacer member and create an air-tight seal therearound.
- 26. The method of claim 25 in which the plastic material is polyurethane.
- 27. The method claim of claim 25 in which the glass subassembly is unsealed against fluid passage prior to the molding step, and the method includes the step of assembling a moisture barrier material to cover the outer wall portion of the spacer member.
- 28. The method of claim 27 in which the step includes shaping the moisture barrier material to overlap the peripheral edges of the glass lites adjacent to the outer wall portion of the spacer member.
- 29. The method of claim 25 in which said locking means comprises a locking key member and includes the step of engaging the free spacer member ends in locked position on the key member and forming a matching continuation of the spacer member outer wall configuration across the key member.
- 30. The method of claim 29, including the step of covering the outer wall portion of the spacer member and the matching key member configuration with a moisture barrier material.
- 31. The method of claim 29, including positioning the locking key member to lockingly engage the free spacer member ends together on the hinge side of the door, and providing the locking key member with electrical connection means for the door.
- 32. The method of claim 31, in which the glass panel subassembly includes heating means on the inner surface of the first glass lite and the electrical connection means of the key member includes a pair of electrical leads, and including the step of orienting the key member leads to extend along a vertical side of the spacer body portion adjacent to the second glass lite, and adhering conductive connector means to engage and extend the key member leads to the horizontal top and bottom sides of the second glass lite.
- 33. The method of claim 32 wherein said conductive connector means includes conductors and bus bars, the step of adhering the conductive connector means comprises the step of adhering the conductors to the vertical side of the separator body portion of the spacer member prior to assembling the spacer member with the glass lites.
- 34. The method of claim 33 wherein the step of adhering said conductive connector means comprises the step of adhering the bus bars to the top and bottom sides of the separator body portion of the spacer member to be oriented against the heating means on the first glass lite.
- 35. The method of claim 34 comprising the step of placing crossover connector means in the spacer member in a position for making electrical contact between the conductors and the bus bars.
- 36. The method of claim 25 wherein the step of assembling the spacer member on the first and second glass lites further includes the step of assembling a third lite with the spacer member to be in spaced relation with the first and second lites.
- 37. The method of claim 36 including forming the third lite from low-E glass.
- 38. The method of claim 25 wherein the step of molding the non-metal frame includes molding horizontally extending reinforcing means into the frame adjacent to the hinge side of the door for reinforcing a hinged connection of the door to the merchandiser.
- 39. The method of claim 25 further comprising an additional step following said molding step of providing means to create openings in the molded frame for accommodating door hardware, and inserting torsion means and torque adjustment means for said torsion means into the molded frame openings.
- 40. A method of making a transparent door adapted for use on a refrigerated enclosure and having at least two glass lites that are thermally and electrically encased within a non-metallic molded frame, comprising the steps of:providing a thermally and electrically insulating one-piece spacer member having a continuous flat outer wall section and a separator body section projecting inwardly therefrom, and which wall section also forms a sealing flange on each side of the body section; forming spaced angled notches in the separator body section to define body section segments corresponding to the respective sides of the glass lites; folding the spacer member at the angled notches around one of the glass lites to mate the body section segments at the corners and lie in surface contact along the inner surface of the one glass lite; bringing the free ends of the spacer member into juxtaposition and securing them together with locking means for holding the spacer member in assembled peripheral contact around the one glass lite; assembling an other glass lite in surface contact with the body section of the spacer member and in spaced relation with the one glass lite; and with the sealing flange of the spacer member wall section being engaged peripherally along the adjacent marginal edge of the other glass lite; covering the outer wall section with a moisture barrier material; and molding an outer door frame of non-metallic, electrically non-conductive material to peripherally encase the assembled glass lites and spacer member and create an air-tight seal therebetween.
- 41. The method of claim 40 in which the one glass lite is formed from low-E glass.
- 42. The method of claim 40 in which the other glass lite has a heat conductive film on its interiorly facing surface.
- 43. A method of making a transparent reach-in door for a refrigerated product merchandiser, comprising the steps of:providing a thermally and electrically insulating spacer member having an inner central separator body portion with an outer wall forming extended side sealing flanges on each side of the body portion; forming an unsealed glass panel subassembly by preassembling the spacer member around first and second glass lites with the separator body portion engaging the opposed inner surfaces of the glass lites and the peripheral margins of the lites being engaged by the side sealing flanges of the spacer member to form a captured glass panel subassembly; and molding an outer non-metal frame to peripherally encase and seal the captured glass panel subassembly to form a reach-in door.
- 44. The method of claim 43 further comprising the steps of:locating the first glass lite so that in use of the door on the merchandiser the first glass lite is positioned nearest to the product area of the merchandiser and locating the second lite in an outwardly spaced relation with the first lite, forming one of said first and second glass lites from a low-E glass and forming a heat conductive film on the other of said lites.
- 45. The method of claim 43 in which said first lite is said other of said lites, and forming the heat conductive film on the interiorly facing surface of said first lite opposed to said second lite.
- 46. The method of claim 45 including providing a third glass lite on the panel outwardly of the first and second glass lites whereby the middle glass lite of the panel is formed of low-E glass.
- 47. The method of claim 43 including applying a locking member to secure the ends of the spacer members, thereby defining a continuous peripheral edging for the glass panel subassembly, and providing heating means on the inner surface of one of the first and second glass lites, and providing an electrical connection to the heating means through the locking key member.
- 48. The method of claim 43 wherein the step of preassembling the spacer member on the first and second glass lites further includes first assembling a third lite with the spacer member in position to be located between the first and second lites.
- 49. The method of making a refrigerated merchandiser having a product area, comprising the steps of:constructing a casing defining the product area therein and having an opening for accessing the product area; constructing and arranging the door to have a transparent panel with first and second glass lites, mounting the door on the casing generally over the opening such that the first glass lite is nearest to the product area and the second lite is in an outwardly spaced relation with the first lite, forming the second glass lite from a low-E glass and forming a heat conductive film on the first glass lite.
- 50. The method of claim 49 wherein said step of forming the heat conductive film comprises forming the film on the interiorly facing surface of said first lite opposed to said second lite.
- 51. The method of claim 49 including providing a third glass lite on the panel outwardly of the first and second glass lites whereby the middle glass lite of the panel is formed of low-E glass.
Parent Case Info
This application is a division of patent application Ser. No. 09/276,456 filed Mar. 25, 1999 for Reach-In Door For Refrigerated Merchandiser, now U.S. Pat. No. 6,148,563.
US Referenced Citations (86)
Foreign Referenced Citations (1)
Number |
Date |
Country |
580944 |
Aug 1959 |
CA |