# US 10,246,886 B2 · Adjustable shim and pre-hung door with the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,246,886 B2 - Document ID: US10246886B2 - Status: Granted - Kind: B2 - Application number: 15/392,141 - Filed: 2016-12-28 - Published: 2017-07-20 - Granted: 2019-04-02 - Earliest claimed: 2016-01-15 - Assignees: Endura Products, Inc. - Applicants: Endura Products, Inc. - Inventors: Michael K. Mitchell - Web page: https://patentgrep.com/patent/US10246886B2 ## CPC - E04F 21/0015: {for mounting frames} - E06B 2003/7098: {with bracing means crossing each other, e.g. diagonally disposed} - E04F: FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS (windows, doors E06B) - 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) ## Abstract An adjustable shim is described for attachment to a pre-hung door or a rough opening. The adjustable shim may include a base bracket for mounting the adjustable shim to the pre-hung door or the rough opening, an inner shim, an outer shim, and a first actuator operably attached between the base bracket and the inner shim. At least one of the inner shim and the outer shim is tapered. Rotation of the first actuator translates the inner shim substantially linearly relative to the outer shim, thereby adjusting a combined height of the inner shim and the outer shim. ## Claims ### Claim 1 An adjustable shim, the adjustable shim comprising: a base bracket configured to mount the adjustable shim to a pre-hung door or a rough opening; an inner shim; an outer shim; a first actuator operably attached between the base bracket and the inner shim; a plumb adjustment bracket slideably attached to the base bracket and configured for attachment to a rough opening frame that defines a rough opening; and a second actuator configured to convert rotational motion of the second actuator into linear motion, sliding the plumb adjustment bracket relative to the base bracket along a direction into and out of the rough opening, wherein at least one of the inner shim and the outer shim is tapered, wherein rotation of the first actuator translates the inner shim substantially linearly relative to the outer shim, thereby adjusting a combined height of the inner shim and the outer shim. ### Claim 2 (depends on 1) The adjustable shim of claim 1, wherein the first actuator is a first adjustment screw. ### Claim 3 (depends on 1) The adjustable shim of claim 1, wherein a first portion of the base bracket is configured to be mounted at non-zero angle relative to a back face of a frame member of the pre-hung door. ### Claim 4 (depends on 3) The adjustable shim of claim 3, wherein the first portion is a plate including a channel in which the inner shim is positioned. ### Claim 5 (depends on 3) The adjustable shim of claim 3, wherein the outer shim comprises guide legs, and the first portion of the base bracket includes notches therethrough, wherein the guide legs are positioned to travel within the notches such that the outer shim moves perpendicular to the base bracket. ### Claim 6 (depends on 1) The adjustable shim of claim 1, further comprising: a supplemental shim removably attached to the outer shim to selectively increase a maximum height of the adjustable shim. ### Claim 7 (depends on 6) The adjustable shim of claim 6, wherein the supplemental shim is provided integrally with the outer shim, and wherein the supplemental shim is configured to be separated from a first portion of the outer shim and stacked on a second portion of the outer shim to provide additional shim thickness to accommodate larger margins between the pre-hung door and a rough opening. ### Claim 8 (depends on 1) The adjustable shim of claim 1, wherein the base bracket comprises a slot extending into the base bracket from an edge thereof, wherein the slot is configured for securing a string used to judge a planar condition of the pre-hung door. ### Claim 9 (depends on 1) The adjustable shim of claim 1, further comprising: at least one strap rotatably attached to the base bracket for attaching the adjustable shim to a rough opening frame. ### Claim 10 An adjustable shim, the adjustable shim comprising: a base bracket configured to mount the adjustable shim to a pre-hung door or a rough opening; an inner shim; an outer shim; a first actuator operably attached between the base bracket and the inner shim; and at least one strap rotatably attached to the base bracket for attaching the adjustable shim to a rough opening frame, wherein at least one of the inner shim and the outer shim is tapered, wherein rotation of the first actuator translates the inner shim substantially linearly relative to the outer shim, thereby adjusting a combined height of the inner shim and the outer shim. ### Claim 11 (depends on 10) The adjustable shim of claim 10, wherein the at least one strap is bent away from the pre-hung door to overlap a portion of a face of the rough opening frame. ### Claim 12 (depends on 10) The adjustable shim of claim 10, further comprising: a plumb adjustment bracket slideably attached to the base bracket and configured for attachment to a rough opening frame that defines a rough opening; and a second actuator for sliding the plumb adjustment bracket relative to the base bracket along a direction into and out of the rough opening. ### Claim 13 (depends on 12) The adjustable shim of claim 12, wherein the first actuator is a first adjustment screw and the second actuator is a second adjustment screw. ### Claim 14 (depends on 10) The adjustable shim of claim 10, further comprising: a supplemental shim removably attached to the outer shim to selectively increase a maximum height of the adjustable shim. ### Claim 15 A pre-hung door, comprising: a pair of vertical frame members, a header spanning across a top of the vertical frame members; a threshold spanning across a bottom of the vertical frame members; a door panel hinged to one of the vertical frame members; and at least one adjustable shim, the at least one adjustable shim comprising: a base bracket configured to mount the adjustable shim to a pre-hung door or a rough opening; an inner shim; an outer shim; and a first actuator operably attached between the base bracket and the inner shim, wherein at least one of the inner shim and the outer shim is tapered, wherein rotation of the first actuator translates the inner shim substantially linearly relative to the outer shim, thereby adjusting a combined height of the inner shim and the outer shim, wherein a receiving recess is formed in a back face of at least one of the vertical frame members into which a respective one of the at least one adjustable shim is mounted. ### Claim 16 (depends on 15) The pre-hung door of claim 15, wherein the at least one adjustable shim includes a plurality of adjustable shims, the plurality of adjustable shims attached to the pair of vertical frame members adjacent to respective upper and lower ends of each vertical frame member. ### Claim 17 (depends on 15) An entryway comprising: at least a pair of studs, the studs at least partially defining a rough opening through a building; and the pre-hung door of claim 15 positioned within the rough opening. ### Claim 18 (depends on 15) The pre-hung door of claim 15, wherein the at least one adjustable shim further comprises: a plumb adjustment bracket slideably attached to the base bracket and configured for attachment to a rough opening frame that defines a rough opening; and a second actuator configured to convert rotational motion of the second actuator into linear motion, sliding the plumb adjustment bracket relative to the base bracket along a direction into and out of the rough opening. ### Claim 19 (depends on 15) The pre-hung door of claim 15, wherein the at least one adjustable shim further comprises: at least one strap rotatably attached to the base bracket for attaching the adjustable shim to a rough opening frame. ### Claim 20 (depends on 15) The pre-hung door of claim 15, wherein the at least one adjustable shim further comprises: a supplemental shim removably attached to the outer shim to selectively increase a maximum height of the adjustable shim.