# US 4,396,241 A · Frame for furniture, in particular for display cabinets and showcases > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,396,241 A - Document ID: US4396241A - Status: Granted - Kind: A - Application number: 06/229,236 - Filed: 1981-01-28 - Granted: 1983-08-02 - Earliest claimed: 1980-01-31 - Assignees: Weyel KG Visuelle Einrichtungen - Inventors: Klaus Winn - Web page: https://patentgrep.com/patent/US4396241A ## CPC - E06B 3/9641: {part of which remains visible (E06B3/9647 takes precedence)} - A47F 3/00: Show cases or show cabinets - E06B 3/9636: {for frame members having longitudinal screw receiving channels} - F16B 12/30: using threaded bolts - F16B 2200/67: Rigid angle couplings - Y10T 403/555: Angle section - E06B: FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES (shades or blinds for greenhouses A01G9/22; curtains A47H; lids for car boots or bonnets B62D25/10; skylights E04B7/18; sunshades, awnings E04F10/00) - A47F: SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS - 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) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A frame for furniture, particularly for display cabinets and showcases, having profiles which form the frame walls and having corner pieces to which the profiles are connected at profile-corner piece connections. At least one profile abuts bluntly on an associated end surface of a corner piece and is pulled thereagainst by at least one screw on the associated end surface. Such screw has its head resting on the corner piece and is screwed into the butting profile. The corner pieces are of hollow construction and have on at least one end thereof an end wall which the screw grips. The corner pieces have, near the screw, a lateral opening through which the screw is accessible in a direction transverse to the longitudinal axis of the screw. ## Claims ### Claim 1 In a frame for furniture, display cabinets and showcases having plural profiles which form frame walls and at least one corner piece to which said profiles are connected, wherein at least one profile abuts end-to-end with an associated end surface of said corner piece and is pulled thereagainst by means of at least one screw on said associated end surface, said screw having an enlarged head which rests on said corner piece and is screwed into the abutting profile, comprising the improvement wherein said corner piece is of a hollow construction and has on at least one end thereof an end wall, said end wall having means defining a hole therethrough, said screw being received in said hole with the enlarged head thereof resting on the inside surface of said end wall, said corner piece having a lateral opening in a sidewall thereof adjacent said enlarged head of said screw and through which said enlarged head is accessible in a direction transverse of the longitudinal axis of said screw, whereby a rotating of said screw about said longitudinal axis thereof will effect a pulling of said end surface of said profile against the outer surface of said end wall. ### Claim 2 (depends on 1) A frame according to claim 1, wherein said corner piece has at the opposite end thereof a further end wall with means defining a further hole therethrough receiving a further screw therethrough, the space between said end walls defining a cavity. ### Claim 3 (depends on 2) A frame according to claim 2, wherein said lateral opening in said corner piece extends over the entire extent of said cavity in said hollow corner piece from end wall to end wall. ### Claim 4 (depends on 1) A frame according to claim 1, wherein said hole in said end wall for said screw is a slot having an inlet opening which is accessible from the laterally outer side of said corner piece through said lateral opening. ### Claim 5 (depends on 1) A frame according to claim 1, wherein the cross section of said corner piece is generally rectangular shaped, and wherein said lateral opening is located in a short side of said rectangle. ### Claim 6 (depends on 1) A frame according to claim 1, wherein near the end of said corner piece remote from said end wall there is a flap formed on said corner piece, said flap extending into a mutually adjacent hollow profile upon abutment of said mutually adjacent end surfaces thereof, and wherein a further screw is provided extending through an opening in said profile and said flap, the axis of which further screw extends transversely to the longitudinal direction of said adjacent profile. ### Claim 7 (depends on 1) A frame according to claim 1, wherein said lateral opening is closed off by a lid, said lid having holding flaps which engage cavities of the adjacent profiles. ### Claim 8 (depends on 1) A frame according to claim 1, wherein the end of said corner piece remote from said end wall is constructed as an insert part insertable into a further hollow and adjacent profile, said insert part having further means defining a further hole therein for receiving a further screw therein, said further screw extending through a wall of said further profile transversely to the longitudinal direction of said further profile. ### Claim 9 (depends on 8) A frame according to claim 8, wherein said further screw screwed into said insert part also extends through a still further profile of an adjacent frame mounted on the first-mentioned frame such that the said screw serves to connect both frames together. ### Claim 10 (depends on 8) A frame according to claim 8, including bars formed on said insert part to create a sufficient length of thread where said further screws are screwed into said insert part, wherein said bars extend over the entire arc length of said corner piece and serve as reinforcing ribs. ### Claim 11 (depends on 8) A frame according to claim 8, wherein said insert part has a center rib, which extends the entire height of said adjacent profile and engages with its edge area a groove in a cavity in said adjacent profile. ### Claim 12 (depends on 1) A frame according to claim 1, wherein said screw extends parallel to said profiles and said enlarged head has a hexagonal recess therein. ### Claim 13 (depends on 1) A frame according to claim 1, wherein said corner piece is a die-cast part. ### Claim 14 (depends on 13) A frame according to claim 13, wherein said die-cast part is aluminum. ### Claim 15 (depends on 1) A frame according to claim 1, including pegs formed on said end wall of said corner piece and fitting into the hollow interior of said profile.