# US 4,391,001 A · Soft toilet seat and hinge connector > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,391,001 A - Document ID: US4391001A - Status: Granted - Kind: A - Application number: 06/418,388 - Filed: 1982-09-15 - Granted: 1983-07-05 - Earliest claimed: 1982-09-15 - Assignees: Beatrice Foods Co. - Inventors: David E. Harrison - Web page: https://patentgrep.com/patent/US4391001A ## CPC - E05D 5/02: Parts for attachment, e.g. flaps - A47K 13/12: Hinges - E05Y 2999/00: Subject-matter not otherwise provided for in this subclass - E05D: HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS (pivotal connections in general F16C11/00) - A47K: SANITARY EQUIPMENT; ACCESSORIES THEREFOR, e.g. TOILET ACCESSORIES - E05Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF ## Abstract A toilet seat hinge has elongated male connector portions provided with saw-toothed shaped upper and lower surfaces which are inserted in female openings in the rear surface of a soft toilet seat and a soft toilet seat cover. The male connector portions lockingly engage with lock lugs provided in a rigid molded bed plate in the seat and cover to prevent retention so that the hinge is permanently connected to the seat and cover following insertion of the male connector member. Another aspect of the invention resides in a novel molding method in which two movable mold components provide openings extending both vertically and horizontally in a molded item. ## Claims ### Claim 1 A toilet seat component and hinge combination comprising: a hinge member including an elongated connector spike having an upper sawtooth-shaped surface and a lower sawtooth-shaped surface; and a toilet seat component including a female coupling means provided adjacent the rear edge of the toilet seat component for receiving and retaining said elongated connector spike to provide a permanent and secure attachment thereto, said female coupling means including: a plurality of horizontally aligned upper lock lugs; a plurality of horizontally aligned lower lock lugs positioned below and spaced from said upper lock logs; and said upper lock lugs and said lower lock lugs defining the upper extent and the lower extent of a coupling opening extending inwardly from the rear extent of said female coupling means, said coupling opening being dimensioned to matingly receive said elongated connector spike with the sawtoothed-shaped upper surface of the elongated connector spike lockingly engaging the upper lock lugs and the sawtooth-shaped lower surface of the elongated connector spike lockingly engaging the lower lock lugs for effecting automatic locked retention of the elongated connector spike in the female coupling in response to the insertion of the elongated connector spike into the female coupling opening. ### Claim 2 (depends on 1) The combination of claim 1 wherein said toilet seat component comprises a rigid molded plastic seat insert and wherein said upper lock lugs are horizontally offset from said lower lock lugs. ### Claim 3 (depends on 2) The combination of claim 2 wherein said upper lock lugs each include an inward lug surface facing inwardly of said toilet seat component and a downwardly facing lower lug surface intersecting said inward lug surface to define a horizontally extending lock corner. ### Claim 4 (depends on 3) The combination of claim 3 wherein each of said downwardly facing lower lug surfaces slopes downwardly from rear to front. ### Claim 5 (depends on 4) The combination of claim 4 wherein said upper lock lugs each include a rear lug surface which slopes rearwardly from top to bottom. ### Claim 6 (depends on 5) The combination of claim 5 wherein said inward lug surface slopes forwardly from top to bottom and has its lower extent defined by the intersection with said lower lug surface. ### Claim 7 (depends on 5) The combination of claim 5 wherein said upper sawtoothed-shaped surface is formed of generally vertical outwardly facing surfaces connected by front to rear upwardly sloping surfaces. ### Claim 8 (depends on 2) The combination of claim 2 wherein said lower lock lugs each include a lower lug inward surface facing inwardly of said toilet seat component and sloping rearwardly from bottom to top and upwardly facing upper lug surface sloping upwardly from rear to front which intersects said lower lug inward surface to define a horizontally extending lower lock corner. ### Claim 9 (depends on 8) The combination of claim 8 wherein said lower lock lugs each include a lower lug rearward surface sloping rearwardly from bottom to top and having its upper extent defined by an intersection with said upwardly facing upper lug surface. ### Claim 10 (depends on 8) The combination of claim 8 wherein said lower sawtoothed-shaped surface is formed of generally vertical outwardly facing surfaces connected by front to rear downwardly sloping surfaces. ### Claim 11 (depends on 1) The combination of claim 1 wherein said toiler seat component comprises a rigid plastic seat insert and further including a foam pad resting on said rigid plastic seat insert and a vinyl skin cover enclosing said foam pad and said rigid plastic seat insert. ### Claim 12 (depends on 11) The combination of claim 11 wherein said upper lock lugs each include an inward lug surface facing inwardly of said toilet seat component and a downwardly facing lower lug surface intersecting said inward lug surface to define a horizontally extending lock corner. ### Claim 13 (depends on 12) The combination of claim 12 wherein each of said downwardly facing lower lug surfaces slopes downwardly from rear to front. ### Claim 14 (depends on 13) The combination of claim 13 wherein said inward lug surface slopes forwardly from top to bottom and has its lower extent defined by the intersection with said lower lug surface. ### Claim 15 (depends on 14) The combination of claim 14 wherein said sawtooth-shaped surfaces of said connector spike comprise generally planar inwardly sloping surfaces connected by vertical planar surfaces. ### Claim 16 (depends on 11) The combination of claim 11 wherein a portion of said vinyl skin surrounding said connector spike serves to provide a sealed connection between said connector spike and said female coupling means. ### Claim 17 A toilet seat component, a toilet seat cover component, and hinge combination comprising: a hinge member including first and second elongated connector spikes each mounted for pivotal movement on a hinge base and each having an upper sawtooth-shaped surface and a lower sawtooth-shaped surface; a toilet seat component including a female coupling means provided adjacent the rear edge of the toilet seat component for receiving and retaining said first elongated connector spikes to provide a permanent and secure attachment thereto; a toilet seat cover component including a female coupling means provided adjacent the rear edge of the toilet seat cover component and including a female opening in the rear surface of the cover component for receiving and retaining said second elongated connector spike to provide a permanent and secure attachment thereto; each of said female coupling means including: a plurality of horizontally aligned upper lock lugs; a plurality of horizontally aligned and spaced lower lock lugs positioned below said upper lock logs; said upper lock lugs and said lower lock lugs defining the upper extent and the lower extent of a female coupling opening extending inwardly from the rear extent of said female coupling means dimensioned to matingly receive its respective elongated connector spike with the sawtoothed-shaped upper surface of the respective elongated connector spike lockingly engaging the upper lock lugs and the sawtooth-shaped lower surface of the respective elongated connector spike lockingly engaging the lower lock lugs for effecting automatic locked retention of the elongated connector spike in the female coupling in response to the insertion of the elongated connector spike into the female coupling opening. ### Claim 18 (depends on 17) The combination of claim 17 wherein said toilet seat component and said toilet seat cover component each comprises a rigid plastic insert. ### Claim 19 (depends on 18) The combination of claim 18 wherein said upper lock lugs each include an inward lug surface facing inwardly of said toilet seat component and a downwardly facing lower lug surface intersecting said inward lug surface to define a horizontally extending lock corner. ### Claim 20 (depends on 19) The combination of claim 19 wherein each of said downwardly facing lower lug surfaces slopes downwardly from rear to front. ### Claim 21 (depends on 20) The combination of claim 20 wherein said upper lock lugs each include a rear lug surface which slopes rearwardly from top to bottom. ### Claim 22 (depends on 21) The combination of claim 21 wherein said inward lug surface slopes forwardly from top to bottom and has its lower extent defined by the intersection with said lower lug surface. ### Claim 23 (depends on 18) The combination of claim 18 additionally including first and second foam pads respectively overlying said rigid plastic inserts comprising said toilet seat components and said toilet seat cover components and first and second vinyl skin covers enclosing said foam pads and their respective rigid plastic inserts. ### Claim 24 A toilet seat component, a toilet seat cover component, and hinge combination comprising: a hinge member including first and second elongated male connector members each mounted for pivotal movement on a hinge base; a toilet seat component including a female compling means provided adjacent the rear edge of the toilet seat component for receiving and retaining said first elongated connector members to provide a permanent and secure attachment thereto; a toilet seat cover component comprising a rigid plastic bed plate having a flat bottom surface and including a female coupling means provided adjacent the rear edge of the toilet seat cover component and including a female opening in the rear surface of the cover component for receiving and retaining said second elongated connector member to provide a permanent and secure attachment thereto; each of said female coupling means including locking and retention means for permitting the insertion of a male connector member therein while precluding the withdrawal of the male connector member therefrom whereby the flat bottom surface of the cover component facingly rests on the upper surface of the seat component when in a closed position. ### Claim 25 (depends on 24) The combination of claim 24 additionally including a foam pad overlying said bed plate and plastic skin means enclosing said foam pad and said bed plate.