초록 ▼

A tamper-proof window unit comprising similar first and second quadrilateral centrally open frame members adapted to be mounted about an opening respectively on opposite sides of a door. Each frame member has a narrow elongated quadrilateral front panel extending generally in a plane parallel to the

A tamper-proof window unit comprising similar first and second quadrilateral centrally open frame members adapted to be mounted about an opening respectively on opposite sides of a door. Each frame member has a narrow elongated quadrilateral front panel extending generally in a plane parallel to the door and marginally about the door opening with an outer edge portion partially overlapping the door adjacent the opening. A small countersunk front to rear screw hole is provided in each side of front panel of a first frame member and the opening is spaced inwardly from the outer edge of the panel so as to communicate with the door opening. A narrow elongated quadrilateral integral flange extends along and projects rearwardly toward the door from an outer edge of each front panel. A second narrow elongated quadrilateral and generally L-shaped integral flange extends along the inner edge of each front panel with each L-shaped flange comprising first and second panels. The first panel of each L-shaped flange projects generally rearwardly from its associated front panel but at a slight angle of inclination toward the center of the door opening. The second panel projects from the rear or inner edge of the first panel outwardly with respect to the center of the door opening and in a plane generally parallel with the door faces and the front panels.

대표청구항 ▼

A tamper-proof window unit for assembly in multi-lateral openings in doors and the like; said unit comprising similar first and second multilateral centrally open frame members adapted to be mounted about an opening respectively on opposite sides of a door, each of said frame members comprising a na

A tamper-proof window unit for assembly in multi-lateral openings in doors and the like; said unit comprising similar first and second multilateral centrally open frame members adapted to be mounted about an opening respectively on opposite sides of a door, each of said frame members comprising a narrow elongated multilateral front panel extending generally in a plane parallel to the door and marginally about the door opening with an outer edge portion partially overlapping the door adjacent the opening, the front panel of said first frame member having a small front to rear opening communicating with the door opening in each of at least two generally opposite sides of the panel, and each frame member also comprising a narrow elongated multilateral generally L-shaped integral flange extending along the inner edge of its said front panel, each L-shaped flange including a first narrow elongated panel which projects generally rearwardly from its associated front panel and a second narrow elongated panel which projects from a rear edge of the first panel outwardly with respect to the center of the door opening and in a plane generally parallel with the door faces and front panels, the two second panels on the opposite frame members being spaced apart in parallel relationship to define a groove which opens inwardly toward the center of the door opening and which is adapted to receive and hold a marginal portion of a pane of glass, a pane of glass disposed in the door and frame opening with a marginal portion thereof entered in said groove, said second panel of one of said frame members having an outer and free edge portion divided into first and second sections along each of at least two generally opposite sides of the panel, each first section being arranged substantially at right angles with the panel and projecting rearwardly toward the second panel on the other frame member and adjacent the marginal edge of the pane of glass, and each second section residing substantially in the plane of the panel, each of at least two generally opposite sides of said second panel of said second frame member having a small front to rear opening therein, said two front to rear openings being aligned in front to rear relationship respectively with the two openings in said front panel sides of said first frame member, and two screws entered and threadably engaged respectively in said aligned openings and serving to secure the window unit and door in assembly with said outer edge portions of said two front panels clampingly engaging opposite sides of the door adjacent its opening and with said two second panels clampingly holding the marginal portions of the pane of glass.