# US 8,739,423 B1 · Marking and leveling device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,739,423 B1 - Document ID: US8739423B1 - Status: Granted - Kind: B1 - Application number: 13/344,337 - Filed: 2012-01-05 - Granted: 2014-06-03 - Earliest claimed: 2011-01-10 - Applicants: Robert Cortum; Jeffory D. Freed; Herbert O. Dixon, Jr.; Jonathan F. Freed - Inventors: Robert Cortum; Jeffory D. Freed; Herbert O. Dixon, Jr.; Jonathan F. Freed - Web page: https://patentgrep.com/patent/US8739423B1 ## CPC - A47G 1/205: {Devices for positioning picture hooks on a wall} - G01C 9/28: Mountings - A47G: HOUSEHOLD OR TABLE EQUIPMENT (book-ends A47B5/00; knives B26B) - G01C: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F; radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effects, propagation time, of radio waves, analogous arrangements using other waves G01S) ## Abstract A marking and leveling device for assisting in the hanging of an object such as a portrait on a structure such as a wall. The marking and leveling device generally includes a central portion having a first extension extending in a first direction from a first end of the central portion and a second extension extending in a second, opposite direction from a second end of the central portion. Each of the extension members include a guide member slidably positioned thereon. Each guide member includes a support member for supporting a fastener or marking device used. A leveling assembly which includes a liquid-based leveling member is rotatably secured within the central portion of the present invention. By utilizing the leveling assembly and guide members, an operator of the present invention may accurately level and mark/fasten a structure using a single device. ## Claims ### Claim 1 A marking and leveling device, comprising: a central portion, wherein said central portion includes a first end and a second end; a first extension extending from said first end of said central portion in a first direction; a second extension extending from said second end of said central portion in a second direction; and a leveling member rotatably positioned within said central portion; a first guide member slidably positioned on said first extension; a second guide member slidably positioned on said second extension; wherein the first extension is slidably engaged with the central portion; wherein the second extension is slidably engaged with the central portion; a fastener removably securable within said first guide member. ### Claim 2 (depends on 1) The marking and leveling device of claim 1, wherein the first extension and the second extension are non-round and matingly engage the central portion such that the first extension and the second extension maintain angular alignment with the central portion as they slid upon the central portion between a retracted position and an extended position. ### Claim 3 (depends on 1) The marking and leveling device of claim 1, wherein the first extension and the second extension have a cross section that is generally square or rectangular in shape. ### Claim 4 (depends on 1) The marking and leveling device of claim 1, wherein said first guide member and said second guide member are each comprised of a collar and a support member extending from said collar. ### Claim 5 (depends on 1) The marking and leveling device of claim 1, wherein said first guide member extends fully around said first extension. ### Claim 6 (depends on 1) The marking and leveling device of claim 1, wherein said leveling member is positioned within a leveling assembly. ### Claim 7 (depends on 6) The marking and leveling device of claim 6, wherein said leveling assembly is comprised of a rotation member having a raised outer rim. ### Claim 8 (depends on 1) The marking and leveling device of claim 1, wherein said second guide member extends fully around said second extension. ### Claim 9 (depends on 8) The marking and leveling device of claim 8, further comprising a marker removably secured within said first guide member. ### Claim 10 (depends on 1) The marking and leveling device of claim 1, wherein said leveling member is comprised of a liquid-based leveling member. ### Claim 11 (depends on 1) The marking and leveling device of claim 1, wherein said first extension member and said second extension member are each adjustable. ### Claim 12 (depends on 11) The marking and leveling device of claim 11, wherein said first extension member and said second extension member are each telescopically adjustable. ### Claim 13 A marking and leveling device, comprising: a central portion, wherein said central portion includes a first end and a second end; a first extension extending from said first end of said central portion in a first direction; wherein the first extension is slidably engaged with the central portion to slidably extend in the first direction; wherein the first extension extends from a first end to a second end; a second extension extending from said second end of said central portion in a second direction; wherein the second extension is slidably engaged with the central portion to slidably extend in the second direction; wherein the second extension extends from a first end to a second end; a first guide member slidably positioned on said first extension; wherein the first guide member slides a length of the first extension between the first end of the first extension and the second end of the first extension; a second guide member slidably positioned on said second extension; and a leveling assembly rotatably positioned within said central portion. ### Claim 14 (depends on 13) The marking and leveling device of claim 13, wherein each of said guide members is comprised of a collar and a support member. ### Claim 15 (depends on 13) The marking and leveling device of claim 13, wherein the second guide member slides a length of the second extension between the first end of the second extension and the second end of the second extension. ### Claim 16 (depends on 13) The marking and leveling device of claim 13, wherein said leveling assembly includes a slot extending therethrough and further comprising a leveling member positioned within said slot. ### Claim 17 (depends on 16) The marking and leveling device of claim 16, wherein said leveling assembly is comprised of a rotation member having a raised outer rim. ### Claim 18 A marking and leveling device, comprising: a central portion, wherein said central portion includes a first end and a second end, wherein said central portion is comprised of a circular configuration; a first extension extending from said first end of said central portion in a first direction, wherein said first extension is comprised of a linear, elongated member; wherein the first extension is slidably engaged with the central portion to slidably extend in the first direction; wherein the first extension extends from a first end to a second end; a second extension extending from said second end of said central portion in a second direction, wherein said first end of said central portion is 180 degrees from said second end of said central portion, wherein said second extension is comprised of a linear, elongated member; wherein the second extension is slidably engaged with the central portion to slidably extend in the second direction; wherein the second extension extends from a first end to a second end; a first guide member slidably positioned on said first extension; a second guide member slidably positioned on said second extension; a leveling assembly rotatably positioned within said central portion, wherein said leveling assembly is comprised of a rotation member; and a liquid-based leveling member positioned within a slot. ### Claim 19 (depends on 18) The marking and leveling device of claim 18, wherein the second guide member slides a length of the second extension between the first end of the second extension and the second end of the second extension.