# US 10,369,273 B2 · Interlocking base for mobile stand for use with intravenous delivery of medications > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,369,273 B2 - Document ID: US10369273B2 - Status: Granted - Kind: B2 - Application number: 15/628,570 - Filed: 2017-06-20 - Published: 2017-12-21 - Granted: 2019-08-06 - Earliest claimed: 2016-06-21 - Assignees: Pedigo Products, Inc. - Applicants: Pedigo Products, Inc. - Inventors: Randal W. Koehler - Web page: https://patentgrep.com/patent/US10369273B2 ## CPC - A61M 5/1413: {Modular systems comprising interconnecting elements} - A61M 5/1415: {Stands, brackets or the like for supporting infusion accessories} - A61M 5/1417: {Holders or handles for hanging up infusion containers} - F16M 11/04: Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand - F16M 11/043: {Allowing translations} - F16M 11/42: with arrangement for propelling the support {stands on wheels} - F16M 13/00: Other supports for positioning apparatus or articles (heads thereof F16M11/02 {; undercarriages thereof F16M11/20} ; adapted to be stuck in the ground A45F3/44 {; sockets or holders for poles or posts E04H12/22}); Means for steadying hand-held apparatus or articles {(supports for measuring instruments G01D11/30; supports for casings of remote control switching devices H01H9/025)} - A61G 12/008: {mounted on a mobile base, e.g. on a trolley} - A61G 2203/00: General characteristics of devices - A61M 5/14: Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor - A61M 5/1414: {Hanging-up devices} - A61M 2209/084: Supporting bases, stands for equipment - B62B 5/06: Hand moving equipment, e.g. handle bars (for cycles B62K11/14, B62K21/12) - B62B 5/061: {both ends or periphery of cart fitted with handles} - B62B 5/062: {elastically mounted, e.g. for wheelbarrows} - B62B 5/063: {for low-lift hand trucks} - B62B 5/064: {adaptable for different users, e.g. by means of pivoting elements} - B62B 5/065: {by means of telescopic elements} - B62B 5/066: {Handle bars rotatable about their longitudinal axis} - B62B 5/067: {Stowable or retractable handle bars} - B62B 5/068: {Connections to the body for moving the cart, e.g. harnesses} - B62B 5/069: {Removable sleeves on handle bars, e.g. for protection against germs} - B62B 9/20: Handle bars; Handles - F16M 11/00: Stands or trestles as supports for apparatus or articles placed thereon {; Stands for scientific apparatus such as gravitational force meters} (without heads F16M13/00; easels or stands for blackboards or the like A47B97/04; show-stands A47F7/00; for workmen E04G1/32; {sockets or holders for poles or posts E04H12/22;} supporting or suspending for lighting devices F21V21/00) - F16M 11/16: Details concerning attachment of head-supporting legs, with or without actuation of locking members thereof - F16M 2200/02: Locking means - F16M 2200/08: Foot or support base - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} - F16M: FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS - A61G: TRANSPORT, PERSONAL CONVEYANCES OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS (appliances for aiding patients or disabled persons to walk A61H3/00); OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES (embalming corpses A01N1/00) - B62B: HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES (characterised by animal propulsion B62C; propulsion of sledges by driver or engine B62M) ## Abstract A base having legs supported on wheels. A second leg may be positioned between first and third legs and the first leg may be positioned between the second leg and a fourth leg. A first gap is positioned between the second and third legs, and a second gap is positioned between the fourth and first legs. The first and second gaps are configured to at least partially receive a user's first and second feet, respectively. A keyway with a bridge may be defined between the first and second legs. A key that may be formed in a fifth leg is removably receivable inside a like keyway of a like base to thereby interlock the bases together so that they are moveable as a unit. An end portion of the key is positionable underneath a like bridge of the like keyway such that the like bridge limits upward movement of the key. ## Claims ### Claim 1 A base for use by a user having first and second feet, the base comprising: a plurality of wheels; first, second, third, fourth, and fifth legs supported on the plurality of wheels, the second leg being positioned between the first and third legs, the first leg being positioned between the fourth and second legs, the fifth leg being positioned between the third and the fourth legs, the first and second legs comprising first and second end portions respectively, a keyway being defined between the first and second legs, the first and second legs curving inwardly toward one another and defining an opening into the keyway between the first and second end portions, the fifth leg having a head portion and a connection portion, the head portion being configured to be removably received into a like keyway of a like base, a like opening being defined between like first and second end portions of the like first and second legs, respectively, the base and the like base being interlocked together by the head portion which is too large to pass through the like opening when the head portion is positioned inside the like keyway and the connecting portion of the fifth leg extends outwardly from the like keyway through the like opening; a first clearance gap positioned between the second leg and the third leg, the first clearance gap being configured to at least partially receive the user's first foot; and a second clearance gap positioned between the fourth leg and the first leg, the second clearance gap being configured to at least partially receive the user's second foot. ### Claim 2 (depends on 1) The base of claim 1, wherein the head portion has a rounded outer shape, and the keyway has a rounded inner shape. ### Claim 3 (depends on 1) The base claim 1, the base further comprising: a first gap defined between the fifth and fourth legs, the first gap being configured to receive the like first end portion of the like first leg of the like base; and a second gap defined between the third and fifth legs, the second gap being configured to receive the like second end portion of the like second leg of the like base. ### Claim 4 (depends on 1) The base claim 1, further comprising: a bridge portion overhanging a portion of the keyway, the head portion having a free distal end portion configured to be positioned underneath a like bridge portion of the like base when the head portion is positioned inside the like keyway. ### Claim 5 (depends on 4) The base of claim 4, wherein the head portion tapers toward the free distal end portion. ### Claim 6 (depends on 1) The base of claim 1, wherein sufficient space is defined between the head portion and the like keyway to allow the base and the like base to move with respect to one another and remain interlocked together while traversing obstacles. ### Claim 7 (depends on 1) The base of claim 1, wherein the third and fourth legs each extend forwardly, and the first and second legs each extend rearwardly. ### Claim 8 (depends on 1) The base of claim 1, further comprising: a center section, the first, second, third, and fourth legs each extending away from the center section other than radially. ### Claim 9 (depends on 1) The base of claim 1, further comprising: a center section, the first, second, third, and fourth legs each having an upper surface that tapers outwardly and downwardly from the center section. ### Claim 10 (depends on 9) The base of claim 9, wherein the upper surface of each of the first, second, third, and fourth legs is formed along a cone that has an apex at or near the center section. ### Claim 11 (depends on 1) The base of claim 1, further comprising: a connector configured to receive and retain a pole of an IV stand. ### Claim 12 A base comprising: a plurality of legs supported on a plurality of wheels; a keyway defined between first and second ones of the plurality of legs, the first and second legs having first and second end portions, respectively, that define an opening into the keyway; a bridge portion overhanging a portion of the keyway; and a key formed in a third one of the plurality of legs, the key being configured to be removably received inside a like keyway of a like base, and when so received, to interlock the base and the like base together, the like keyway having a like opening defined between like first and second end portions of like first and second legs, respectively, a connecting portion of the third leg being configured to extend outwardly through the like opening but the key being too large to pass through the like opening when the key is received inside the like keyway, the base and the like base being moveable as a unit when interlocked together in both first and second directions, the first direction being opposite the second direction, the unit being movable in the first direction when the base is pushed in the first direction, the unit being movable in the second direction when the base is pulled in the second direction, the key having a free distal end portion, the free distal end portion of the key being positioned underneath a like bridge portion of the like base when the key is removably received inside the like keyway of the like base, the like bridge portion of the like base limiting upward movement of the key relative to the like base. ### Claim 13 (depends on 12) The base of claim 12, wherein the like bridge portion of the like base rests upon and is supported by the key. ### Claim 14 (depends on 12) The base of claim 12, wherein the like bridge portion of the like base straddles the key and is spaced apart therefrom by a pre-determined gap. ### Claim 15 (depends on 12) The base of claim 12, further comprising: a fourth leg positioned between the first and third legs; and a first clearance gap positioned between the fourth leg and the first leg, the first clearance gap being configured to at least partially receive a user's foot. ### Claim 16 (depends on 15) The base of claim 15, further comprising: a fifth leg positioned between the second and third legs; and a second clearance gap positioned between the fifth leg and the second leg, the second clearance gap being configured to at least partially receive the user's foot. ### Claim 17 (depends on 16) The base of claim 16, the base further comprising: a first gap defined between the third and fourth legs, the first gap being configured to receive the like first end portion of the like first leg of the like base; and a second gap defined between the third and fifth legs, the second gap being configured to receive the like second end portion of the like second leg of the like base. ### Claim 18 (depends on 12) The base of claim 12, the base further comprising: a fourth leg positioned between the first and third legs; a fifth leg positioned between the second and third legs; a first gap defined between the third and fourth legs, the first gap being configured to receive the like first end portion of the like first leg of the like base; and a second gap defined between the third and fifth legs, the second gap being configured to receive the like second end portion of the like second leg of the like base. ### Claim 19 (depends on 12) The base of claim 12, wherein the key tapers toward the free distal end portion. ### Claim 20 (depends on 12) The base of claim 12, wherein sufficient space is defined between the key and the like keyway to allow the base and the like base to move with respect to one another and remain interlocked together while traversing obstacles. ### Claim 21 (depends on 12) The base of claim 12, wherein the first and second legs each curve toward the opening into the keyway. ### Claim 22 (depends on 12) The base of claim 12, the base further comprising: a fourth leg positioned between the first and third legs; and a fifth leg positioned between the second and third legs, the fourth and fifth legs each extending forwardly, the first and second legs each extending rearwardly. ### Claim 23 (depends on 22) The base of claim 22, further comprising: a center section, the first, second, fourth, and fifth legs each extending away from the center section other than radially, the third leg extending away from the center section radially. ### Claim 24 (depends on 12) The base of claim 12, further comprising: a center section, the first, second, and third legs each having an upper surface that tapers outwardly and downwardly from the center section. ### Claim 25 (depends on 24) The base of claim 24, wherein the upper surface of each of the first, second, and third legs is formed along a cone that has an apex at or near the center section. ### Claim 26 (depends on 12) The base of claim 12, further comprising: a connector configured to receive and retain a pole of an IV stand.