# US 4,392,436 A · Knockdown metal table > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,392,436 A - Document ID: US4392436A - Status: Granted - Kind: A - Application number: 06/207,295 - Filed: 1980-11-17 - Granted: 1983-07-12 - Earliest claimed: 1980-11-17 - Assignees: BMC Products - Inventors: Raywood C. Weiler - Web page: https://patentgrep.com/patent/US4392436A ## CPC - B60B 33/06: mounted retractably - A47B 1/04: with supplementary leaves or drop leaves {arranged at the periphery (A47B1/08 takes precedence)} - F16B 12/52: Metal leg connections (F16B12/50 takes precedence) - B60B: VEHICLE WHEELS (making wheels or wheel parts by rolling B21H1/00, by forging, hammering or pressing B21K1/28); CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION - A47B: TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE (furniture jointing F16B) - F16B: DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING (couplings for transmitting rotation F16D) ## Abstract A knockdown metal table having legs and a flanged top and including auxiliary components such as a drop leaf and modesty panel having attaching means which in assembly are clamped between the legs and the table flanges. A lift assembly including casters is attached to the legs and is adapted to be selectively actuated to move first one pair of casters and then the other into or out of engagement with a floor surface to permit rolling of the table over said floor surface or to rest the table on the floor surface in a desired position. ## Claims ### Claim 1 In combination a generally rectangular table and an auxiliary component removably attached thereto, said table including a horizontal member having depending flanges forming a plurality of corners, and a plurality of legs each being defined by four sides with adjacent sides being perpendicular so that said legs are generally square shaped in cross section, a diagonal connecting member at each of said corners, each of said diagonal connecting members having threaded means, a screw member received in each of said threaded means, said screw members being adjustable relative to said legs, a U-shaped member diagonally positioned and engaged by each of said screw members with spaced sides of each of said U-shaped members engaging the innermost right angle corner of one of said legs and adapted to apply pressure against said leg to hold said leg in one of said corners formed by said depending flanges, said screw members when retracted permitting removal of said legs, said auxiliary component including a pair of spaced attaching means each having a flat portion with each such portion being adapted to be received between a corresponding one of said legs and flanges before the screw member is adjusted to secure said leg to one of said corners formed by said depending flanges. ### Claim 2 (depends on 1) The invention as defined in claim 1 in which said auxiliary component comprises a panel extending between a pair of said legs. ### Claim 3 (depends on 1) The invention as defined in claim 1 in which said auxiliary component comprises a drop leaf hinged to said attaching means and adapted to be selectively moved to horizontal or vertical positions. ### Claim 4 (depends on 3) The invention as defined in claim 3 in which said attaching means includes a flange integral with said flat portion and in which said flange and said flat portion engage adjacent sides of one of said legs when in assembled relation. ### Claim 5 (depends on 3) The invention as defined in claim 3 including a pair of toggle links connecting said drop leaf and said attaching means. ### Claim 6 In combination with a table having two pairs of legs, lift means including a plate member secured to each of said pairs of legs, two pairs of lift arms with each of said pairs of lift arms pivotally secured intermediate its ends to one of said plate members with the inner ends of said pairs of lift arms overlapping each other, a caster supported at the outer end of each of said lift arms, a lift rod journalled in said plate members and having a pair of cam elements with one disposed at each end so as to engage the inner ends of a respective pair of said lift arms, means for rotating said lift rods so as to effect sequential engagement of said cam elements first with one of said pairs of lift arms and then with the other of said pairs of lift arms so as to effect substantially vertical movement of said casters, one delayed behind the other, into or away from engagement with a floor space to thereby elevate or lower said table. ### Claim 7 (depends on 1) The invention as defined in claim 1 including lift means attached to said legs of said table for selectively elevating or lowering said legs in relation to a floor surface so as to permit movement of said table over said floor surface for location of said table in a desired position. ### Claim 8 (depends on 7) The invention as defined in claim 7 in which said table includes two pairs of said legs and said lift means includes a plate member secured to each pair of said legs, two pairs of lift arms with each of said pairs of lift arms pivotally secured intermediate its ends to one of said plate members with the inner ends of said lift arms overlapping each other, a caster supported at the outer ends of each of said lift arms, a lift rod journalled in said plate members and having a pair of cam elements with one disposed at each end so as to engage the inner ends of a respective pair of said lift arms, and means for rotating said lift rod so as to effect sequantial engagement of said cam elements first with one of said pairs of lift arms and then with the other of said pairs of lift arms so as to effect substantially vertical movement of said casters, one delayed behind the other, into or away from engagement with a floor surface to thereby elevate or lower said table.