# US 8,769,889 B2 · Spacer for insulating glass panes > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,769,889 B2 - Document ID: US8769889B2 - Status: Granted - Kind: B2 - Application number: 13/201,833 - Filed: 2010-02-15 - Published: 2011-12-08 - Granted: 2014-07-08 - Earliest claimed: 2009-02-18 - Assignees: Plus Inventia AG - Applicants: Karl Lenhardt - Inventors: Karl Lenhardt - Web page: https://patentgrep.com/patent/US8769889B2 ## CPC - E06B 3/66342: {characterised by their sealed connection to the panes} - E06B 3/66361: {with special structural provisions for holding drying agents, e.g. packed in special containers} - Y10T 29/49: Method of mechanical manufacture - E06B: FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES (shades or blinds for greenhouses A01G9/22; curtains A47H; lids for car boots or bonnets B62D25/10; skylights E04B7/18; sunshades, awnings E04F10/00) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A method for the production of a frame-shaped spacer for insulating glass panes which includes individual glass plates spaced by adhering the spacer to them, including the steps of selecting a metallic hollow profile bar, which includes an outer wall, an inner wall opposite the outer wall and two flanks which are parallel to one another, the inner wall and the outer wall being narrower than the hollow profile bar, and forming the spacer from the hollow profile bar, so that their flanks face the glass plates. ## Claims ### Claim 1 A method for the production of a frame-shaped spacer for insulating glass panes which comprise two individual glass plates spaced by adhering the spacer to the two individual glass plates, comprising the steps of: selecting a hollow profile bar, which comprises an outer wall, an inner wall opposite the outer wall and two oppositely disposed flanks connecting the inner and outer walls, the flanks each comprising a middle flat partial region disposed substantially parallel to the two individual glass plates including an inner side recessed partial region between the middle flat partial region and the inner wall and an outer side recessed partial region between the middle flat partial region and the outer wall, where the length of the inner wall and the outer wall are narrower than the distance between the middle flat partial regions of the flanks and wherein the hollow profile bar is airtight or gastight and also empty wherein the hollow profile bar does not contain a desiccant; and forming the frame-shaped spacer by bending the hollow profile bar at least two times. ### Claim 2 (depends on 1) The method according to claim 1, wherein the hollow profile bar is designed asymmetrically in regards to its longitudinal center plane intersecting the flanks. ### Claim 3 (depends on 2) The method according to claim 2, wherein a cross section of the recessed partial regions of the hollow profile bar on one side of the longitudinal center plane intersecting the flanks is smaller than the cross section of the recessed partial regions on the other side of this longitudinal center plane. ### Claim 4 (depends on 1) The method according to claim 1, wherein the hollow profile bar is designed mirror-symmetrically to its longitudinal center plane intersecting the outer wall and the inner wall. ### Claim 5 (depends on 1) The method according to claim 1, wherein the hollow profile bar is formed from a metal band, whose longitudinal edges meet on a flank of the hollow profile bar and are there connected to one another by welding or bonding. ### Claim 6 (depends on 1) The method according to claim 1, wherein none of the walls of the hollow profile bar comprises an opening. ### Claim 7 (depends on 1) The method according to claim 1, wherein the hollow profile bar comprises aluminum, aluminum alloy or of a non-corrosive steel. ### Claim 8 (depends on 1) The method according to claim 1, wherein the inner side recessed partial region adjoining the inner wall of the hollow profile bar is narrower than the outer side recessed partial region adjoining the outer wall of the hollow profile bar. ### Claim 9 (depends on 1) The method according to claim 1, wherein the inner wall of the hollow profile bar comprises grooves which have an orientation at right angle to its flanks. ### Claim 10 (depends on 9) The method according to claim 9, wherein the grooves end at a distance before the flanks. ### Claim 11 (depends on 1) The method according to claim 1, wherein the frame-shaped spacer is produced by bending the hollow profile bar to form corners of the spacer. ### Claim 12 (depends on 1) The method according to claim 1, wherein the spacer is formed from the hollow profile bar in which the recessed partial regions of the flanks adjoining the respective middle flat partial regions of the flanks have such a contour that the spacer profile tapers from the middle flat partial regions of the flanks towards the outer wall and towards the inner wall of the spacer profile or first of all tapers and then passes over into a region of a reduced constant width. ### Claim 13 (depends on 1) The method according to claim 1, wherein the inner wall and the outer wall of the hollow profile bar are provided with grooves which have an orientation at right angle to its flanks. ### Claim 14 (depends on 13) The method according to claim 13, wherein the grooves are so provided in the inner wall and in the outer wall of the hollow profile bar that they end at a distance before the flanks. ### Claim 15 (depends on 1) The method according to claim 1, including the step of placing a sealant along each of the flanks including the middle flat partial region, the inner side recessed partial region and the outer side partial recessed partial region. ### Claim 16 (depends on 15) The method according to claim 15, wherein the step of placing the sealant is before the step of forming the frame-shaped spacer by bending the hollow profile bar. ### Claim 17 (depends on 1) The method according to claim 1, wherein a first end and a second end of the frame-shaped spacer meet after bending the hollow profile bar creating a complete perimeter extending around all the sides of the two individual glass plates. ### Claim 18 A method for the production of a frame-shaped spacer for insulating glass panes which comprise two individual glass plates spaced by adhering the spacer to the two individual glass plates, comprising the steps of: selecting a hollow profile bar, which comprises an outer wall, an inner wall opposite the outer wall and two oppositely disposed flanks connecting the inner and outer walls, the flanks each comprising a middle flat partial region disposed substantially parallel to the two individual glass plates including an inner side recessed partial region between the middle flat partial region and the inner wall and an outer side recessed partial region between the middle flat partial region and the outer wall, where the length of the inner wall and the outer wall are narrower than the distance between the middle flat partial regions of the flanks, and wherein the hollow profile bar is airtight or gastight; forming the frame-shaped spacer by bending the hollow profile bar; and placing a sealant along each of the flanks including the middle flat partial region, the inner side recessed partial region and the outer side partial recessed partial region. ### Claim 19 (depends on 18) The method according to claim 18, wherein a first end and a second end of the frame-shaped spacer meet after bending the hollow profile bar creating a complete perimeter extending around all the sides of the two individual glass plates. ### Claim 20 A method for the production of a frame-shaped spacer for insulating glass panes which comprise two individual glass plates spaced by adhering the spacer to the two individual glass plates, comprising the steps of: selecting a hollow profile bar, which comprises an outer wall, an inner wall opposite the outer wall and two oppositely disposed flanks connecting the inner and outer walls, the flanks each comprising a middle flat partial region disposed substantially parallel to the two individual glass plates including an inner side recessed partial region between the middle flat partial region and the inner wall and an outer side recessed partial region between the middle flat partial region and the outer wall, where the length of the inner wall and the outer wall are narrower than the distance between the middle flat partial regions of the flanks, and wherein the hollow profile bar is airtight or gastight; placing a sealant along each of the flanks including the middle flat partial region, the inner side recessed partial region and the outer side partial recessed partial region; and forming the frame-shaped spacer by bending the hollow profile bar, wherein the step of placing the sealant is before the step of forming the frame-shaped spacer by bending the hollow profile bar.