# US 5,707,539 A · Concrete form with safety bar > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,707,539 A - Document ID: US5707539A - Status: Granted - Kind: A - Application number: 08/524,652 - Filed: 1995-09-08 - Granted: 1998-01-13 - Earliest claimed: 1995-09-08 - Assignees: Symons Corporation - Inventors: Robert J. Flathau; Alan E. Soltysik; Robert A. Spindler - Web page: https://patentgrep.com/patent/US5707539A ## CPC - E04G 17/00: Connecting or other auxiliary members for forms, falsework structures, or shutterings - E04G 11/10: of elements without beams {which are mounted during erection of the shuttering to brace or couple the elements}(E04G11/18 takes precedence) - Y10T 29/49716: Converting - E04G: SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A concrete form having a frame with a first pair of outer frame members and a second pair of outer frame members. The first pair of outer frame members are disposed perpendicular to the second pair of outer frame members so that the first and second pairs of outer frame members define a substantially rectangular shape. The concrete form has two inner frame members connected between two of the outer frame members, the inner frame members being spaced to define a rectangular bay area therebetween. The concrete form has a flat concrete-forming member fixed to the outer frame, and a support member with a pair of end portions and a middle portion disposed between the end portions. The support member is connected to the first and second inner frame members so that the middle portion of the support member is spaced from the concrete-forming member by a first distance and so that the end portions of the support member are spaced from the concrete-forming member by a second distance smaller than the first distance. ## Claims ### Claim 1 A concrete form, comprising: a frame having a first pair of outer frame members and a second pair of outer frame members, said first pair of outer frame members being disposed substantially perpendicular to said second pair of outer frame members so that said first and second pairs of outer frame members define a substantially rectangular shape; a first inner frame member connected between two of said outer frame members; a second inner frame member connected between said two of said outer frame members and being spaced from said first inner frame member to define a substantially rectangular bay area; a flat concrete-forming member fixed to said frame, said concrete-forming member having a shape substantially the same as said substantially rectangular shape defined by said outer frame members; and a nonlinear support member having a pair of end portions and a middle portion disposed between said end portions, said nonlinear support member being connected to said first and second inner frame members so that one of said end portions of said nonlinear support member is spaced from said concrete-forming member by a first distance and so that said middle portion of said support member is spaced from said concrete-forming member by a second distance greater than said first distance. ### Claim 2 (depends on 1) A concrete form as defined in claim 1 wherein said nonlinear support member comprises a rod. ### Claim 3 (depends on 2) A concrete form as defined in claim 2 wherein said nonlinear support member comprises a rod having a circular cross-section. ### Claim 4 (depends on 2) A concrete form as defined in claim 2 wherein said nonlinear support member is positioned so that both of said end portions of said nonlinear support member are spaced from said concrete-forming member by said first distance. ### Claim 5 (depends on 2) A concrete form as defined in claim 2 wherein said middle portion of said nonlinear support member has a substantially linear central axis. ### Claim 6 (depends on 1) A concrete form as defined in claim 1 wherein each of said ends of said support member comprises a semi-circular curved rod. ### Claim 7 (depends on 6) A concrete form as defined in claim 6 wherein each of said semi-circular curved rods defines a plane which is substantially parallel to a plane defined by said concrete-forming member. ### Claim 8 (depends on 1) A concrete form as defined in claim 1 wherein each of said ends of said support member passes through one of said inner frame members twice. ### Claim 9 (depends on 1) A concrete form as defined in claim 1 wherein one of said ends of said support member comprises a threaded portion. ### Claim 10 (depends on 9) A concrete form as defined in claim 9 additionally comprising a nut secured to said threaded portion of said support member. ### Claim 11 (depends on 10) A concrete form as defined in claim 10 additionally comprising a weld which secures said nut to said threaded portion of said support member. ### Claim 12 (depends on 1) A concrete form as defined in claim 1 wherein said support member is generally parallel to said two of said outer frame members and is connected to said first and second inner frame members so as to be disposed closer to one than the other of said two of said outer frame members. ### Claim 13 A concrete form, comprising: a frame having a first pair of outer frame members and a second pair of outer frame members, said first pair of outer frame members being disposed substantially perpendicular to said second pair of outer frame members so that said first and second pairs of outer frame members define a substantially rectangular shape; a plurality of support members; a flat concrete-forming member fixed to said frame, said concrete-forming member having a shape substantially the same as said rectangular shape defined by said outer frame members; and a plurality of inner frame members connected between two of said outer frame members, said inner frame members being substantially parallel to each other so that said inner frame members and said two outer frame members form a plurality of substantially rectangular bays, said bays including: a pair of outer bays which have three sides defined by said outer frame members and a fourth side defined by one of said inner frame members; a plurality of inner bays which have two sides defined by said outer frame members and two sides defined by a pair of said inner frame members, said inner and outer bays including: a plurality of unobstructed bays which are unobstructed by one of said support members; and a plurality of safety bays, each safety bay having one of said support members disposed across said safety bay, said one support member being connected to two of said inner frame members which partially define said safety bay, said unobstructed and safety bays being positioned so that each of said safety bays is separated from another of said safety bays by at least one of said unobstructed bays. ### Claim 14 (depends on 13) A concrete form as defined in claim 13 wherein each of said outer bays comprises an unobstructed bay. ### Claim 15 (depends on 13) A concrete form as defined in claim 13 wherein said unobstructed and safety bays are positioned so that one of said safety bays is separated from another of said safety bays by a plurality of said unobstructed bays. ### Claim 16 (depends on 13) A concrete form as defined in claim 13 wherein said unobstructed and safety bays are positioned so that at least one of said inner bays comprises an unobstructed bay. ### Claim 17 (depends on 13) A concrete form as defined in claim 13 wherein said inner and outer frame members define seven bays which include two outer unobstructed bays and five inner bays which include three obstructed bays and two unobstructed bays. ### Claim 18 (depends on 13) A concrete form as defined in claim 13 wherein said inner and outer frame members define eight bays which include two outer unobstructed bays and six inner bays which include three obstructed bays and three unobstructed bays. ### Claim 19 (depends on 13) A concrete form as defined in claim 13 wherein one of said support members comprises a nonlinear support member having a pair of end portions and a middle portion disposed between said end portions, said nonlinear support member being connected to a pair of said inner frame members so that one of said end portions of said nonlinear support member is spaced from said concrete-forming member by a first distance and so that said middle portion of said nonlinear support member is spaced from said concrete-forming member by a second distance, said second distance being greater than said first distance. ### Claim 20 (depends on 19) A concrete form as defined in claim 19 wherein each of said ends of said nonlinear support member comprises a semi-circular curved rod. ### Claim 21 (depends on 20) A concrete form as defined in claim 20 wherein each of said semi-circular curved rods defines a plane which is substantially parallel to a plane defined by said concrete-forming member. ### Claim 22 (depends on 19) A concrete form as defined in claim 19 wherein each of said ends of said nonlinear support member passes through one of said inner frame members twice. ### Claim 23 (depends on 19) A concrete form as defined in claim 19 wherein one of said ends of said nonlinear support member comprises a linear threaded portion. ### Claim 24 (depends on 23) A concrete form as defined in claim 23 additionally comprising a nut secured to said threaded portion of said nonlinear support member.