# US 4,922,064 A · Door position indicator > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,922,064 A - Document ID: US4922064A - Status: Granted - Kind: A - Application number: 07/320,702 - Filed: 1989-03-08 - Granted: 1990-05-01 - Earliest claimed: 1989-03-08 - Assignees: Adtec Incorporated - Inventors: Dean C. Price; Quentin H. Young - Web page: https://patentgrep.com/patent/US4922064A ## CPC - E05D 11/00: Additional features or accessories of hinges {(edge protecting devices E06B3/88)} - H01H 3/162: {associated with a hinge of the closing member} - E05Y 2400/324: Switches - E05Y 2400/326: of the angular type - E05Y 2400/354: End positions - E05Y 2900/132: Doors - H01H 3/166: {Self-adjusting mountings, transmissions and the like} - E05D: HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS (pivotal connections in general F16C11/00) - H01H: ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B7/10; electrolytic self-interrupters H01G9/18; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K17/00) - 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 door position indicator for indicating when the door is open or ajar from the doorjamb comprises a proximity switch which is adjustably mounted on the frame leaf attached to the doorjamb. An actuator is adjustably mounted on the door leaf attached to the door and positioned thereon for alignment with the proximity switch when the door is closed. The indicator also comprises a spring which urges the actuator toward the proximity switch when the actuator and switch are aligned. ## Claims ### Claim 1 A device for indicating the opened and closed position of a door relative to its associated jamb which comprises: a frame leaf formed with an extention, said frame leaf being fixedly mounted on said jamb; a proximity switch changeable between an ON and an OFF condition and fixedly positioned on said frame leaf; a door leaf fixedly mounted on said door; and an actuator adjustably mounted on said door leaf for movement therewith into proximity with said switch to activate said switch into an ON condition when said actuator is in proximity with said switch and for adjustable movement on said door leaf into alignment with said switch upon contact of said actuator with said extension. ### Claim 2 (depends on 1) A device for indicating the opened and closed position of a door as recited in claim 1 wherein said door leaf has a knuckle, said door leaf being fixedly attached to said door and said actuator being adjustably mounted on said knuckle of said door leaf; and wherein said frame leaf has a knuckle, said frame leaf being fixedly attached to said jamb and said proximity switch being rotatably mounted on said knuckle of said frame leaf. ### Claim 3 (depends on 2) A device for indicating the opened and closed position of a door as recited in claim 2 further comprising an actuator housing for mounting said actuator thereon, said actuator housing having means for releasably holding said actuator housing in said knuckle of said door leaf. ### Claim 4 (depends on 2) A device for indicating the opened and closed position of a door as recited in claim 2 further comprising a switch housing for mounting said proximity switch thereon, said switch housing having means for releasably holding said proximity switch in said knuckle of said frame leaf. ### Claim 5 (depends on 2) A device for indicating the opened and closed position of a door as recited in claim 2 further comprising means for urging said actuator toward said proximity switch. ### Claim 6 (depends on 2) A device for indicating the opened and closed position of a door as recited in claim 2 wherein said knuckle of said leaf frame is formed with a hinge pin, said hinge pin being engageable with said knuckle of said door leaf for rotation of said door about said axis substantially parallel to said jamb. ### Claim 7 (depends on 6) A device for indicating the opened and closed position of a door as recited in claim 6 wherein said hinge pin is formed with an extension, said extension being selectively engageable with said actuator to urge said actuator into position for alignment with said proximity switch to change said switch to the ON condition when the door is closed. ### Claim 8 (depends on 1) A device for indicating the opened and closed position of a door as recited in claim 1 further comprising an alarm electronically connected to and activated by the OFF condition of said proximity switch to indicate when the door is open or ajar. ### Claim 9 A door hinge assembly for indicating when the door is ajar from its associated jamb which comprises: a door leaf with a knuckle, said door leaf being fixedly mounted on said door; a frame leaf with a knuckle having an extension, said frame leaf being fixedly mounted on said jamb; an actuator adjustably mounted on said knuckle of said door leaf, said actuator being movable upon contact with said extension; and a proximity switch fixedly positioned in said knuckle of said frame leaf and responsive to the proximity of said actuator to indicate when the door is ajar. ### Claim 10 (depends on 9) A device for indicating the opened and closed position of a door as recited in claim 9 further comprising an actuator housing for mounting said actuator thereon, said actuator housing having means for releasably holding said actuator housing in said knuckle of said door leaf. ### Claim 11 (depends on 9) A device for indicating the opened and closed position of a door as recited in claim 9 further comprising a switch housing for mounting said proximity switch thereon, said switch housing having means for releasably holding said proximity switch in said knuckle of said frame leaf. ### Claim 12 (depends on 9) A device for indicating the opened and closed position of a door as recited in claim 9 further comprising means for urging said actuator toward said proximity switch. ### Claim 13 (depends on 9) A device for indicating the opened and closed psotion of a door as recited in claim 9 wherein said knuckle of said leaf frame is formed with a hinge pin, said hinge pin being engageable with said knuckle of said door leaf for rotation of said door about an axis substantially parallel to said jamb. ### Claim 14 (depends on 13) A device for indicating the opened and closed position of a door as recited in claim 13 wherein said hinge pin is formed with an extension, said extension being selectively engageable with said actuator to urge said actuator into position for alignment with said proximity switch when the door is closed.