HINGES FOR SELF-CLOSING DOOR Russian patent published in 2003 - IPC

FIELD: hinges for self-closing doors. SUBSTANCE: hinges for self-closing doors have upper and lower hinges, each having semihinge secured to door, and semihinge secured to door jamb. Axles of both hinges lie on same straight line interconnecting these axles. Each axle is chamfered relative to hinge at angle α, determined by trigonometric formula α=arc tg(h/L), where L is distance between hinges on door, and h is displacement of rotation axis of lower hinge relative to vertical line run from middle of upper hinge axle. End of lower hinge is bent towards side of limiting of angle of door self-closing. Offered hinges produce closing moment and provide hinges produce closing moment and provide for changing door self-closing angle to large or small side. EFFECT: higher efficiency of use. 4 dwg