# US 9,752,350 B2 · Hand and finger protector for use with doors > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,752,350 B2 - Document ID: US9752350B2 - Status: Granted - Kind: B2 - Application number: 14/568,482 - Filed: 2014-12-12 - Published: 2016-06-16 - Granted: 2017-09-05 - Earliest claimed: 2014-12-12 - Applicants: Raymond E Davis - Inventors: Raymond E Davis - Web page: https://patentgrep.com/patent/US9752350B2 ## CPC - E05B 17/005: {Preventing accidental lock-out, e.g. by obstruction in the striker (securing the bolt in the retracted position E05B63/18; stops and buffers preventing the slamming of wings E05F5/02)} - E05F 5/00: Braking devices, e.g. checks; Stops; Buffers (construction of pneumatic or liquid braking devices E05F3/00; braking devices, buffers or end stops on drawers for tables, cabinets or like furniture A47B88/473; combined with devices for holding wings open E05C17/00; devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing E05C17/04) - E05B 17/00: Accessories in connection with locks (buffers E05F5/00; means for preventing rattling of wings E05F7/04; means for taking the weight of the wing E05F7/06) - E05B 63/00: Locks {or fastenings} with special structural characteristics - E06B 7/36: Finger guards {or other measures preventing harmful access between the door and the door frame (safety devices for doors in railway cars B61D19/026; for lift doors B66B13/26; detection of obstructions E05F15/40)} - E05B 65/06: for swing doors {or windows, i.e. opening inwards and outwards} - E05B: LOCKS; ACCESSORIES THEREFOR; HANDCUFFS - E05F: DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING - 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) ## Abstract This invention relates to an apparatus and to a method designed to prevent hand and finger injuries resulting from inadvertent door closures. The apparatus for use with an existing door and door surround includes a door latching mechanism mountable to the door having a reversibly extendable bolt actuated by a turning member, a striker member mountable to the door surround wherein a portion of the striker member projects beyond the door surround, and when the bolt is extended, complete door closure is impeded by the projecting portion of the striker member with a gap width created between the leading edge of the door and the door surround sufficient to protect human hands and fingers from being crushed, injured, or amputated. When the bolt is intentionally retracted complete door closure is permitted. The apparatus is designed to be interchangeable with standard sized door knobs, latching mechanisms, lock assemblies, and striker plates. ## Claims ### Claim 1 An apparatus comprising: (1) a door with a lock having a lock bolt, which is normally extended, and a door surround including a door frame, and the lock bolt having a throw length and width; (2) a striker member having a portion projecting beyond the door surround, wherein the portion projecting beyond the door surround includes a lock bolt impact backstop region with boundaries exceeding the lock bolt throw length and width, and, whereby when the door is in an open state and the lock bolt of the lock is extended, complete closure of the door is impeded when the door is moved from the open state toward a closed state by direct contact between the lock bolt and the lock bolt impact backstop region such that a gap, having a width sufficient to prevent hands and fingers from being crushed or amputated, is formed between a leading edge of the door and the door frame, and when a door handle that actuates the lock bolt is rotated or levered to its limit, the lock bolt retracts and complete closure of the door is permitted; and, (3) a bumper member located on the striker member at least behind the lock bolt impact backstop region, wherein flanges of the striker are configured to distribute and dissipate the force of the lock bolt directly contacting the lock bolt impact backstop region of the striker member, and the bumper member is configured to rebound against the door surround when the force of the lock bolt directly contacting the lock bolt impact backstop region is excessive. ### Claim 2 (depends on 1) The apparatus according to claim 1, wherein a portion of the striker member is inset into the door frame. ### Claim 3 (depends on 1) The apparatus according to claim 1, wherein the striker member replaces a conventional door frame strike plate. ### Claim 4 (depends on 1) The apparatus according to claim 1, wherein the bumper member is positioned distally on the portion of the striker member projecting beyond the door surround. ### Claim 5 (depends on 1) The apparatus according to claim 1, wherein at least the bumper member is resilient. ### Claim 6 (depends on 1) The apparatus according to claim 1, wherein the door handle and lock is installable on either side of the door. ### Claim 7 A method for preventing injury to body parts resulting from door closure comprising the steps of: providing a door with a normally extended reversibly extendable door lock bolt, and a door surround which includes a door frame; installing a striker member on the door frame wherein the striker member includes a first portion that projects beyond the door surround, an impact region configured to receive a direct impact of the lock bolt when the lock bolt is in a normally extended position, and a bumper member located on a distal end of the first portion and behind the impact region, and the striker member is configured to impede progression of the door from an open state to a closed state when the lock bolt is in the normally extended position so as to directly contact the impact region which forms a gap between a leading edge of the door and the door frame sufficient to prevent hands and fingers from being crushed or amputated by complete closure of the door thereby placing the door in a closure impeded state and, extending or retracting the lock bolt by means of a handle to respectively place the door in the closure impeded state or to enable complete closure of the door wherein the lock bolt is received by a recess in the door frame. ### Claim 8 (depends on 7) The method according to claim 7 wherein the striker member includes an aperture that is circumjacent to the lock bolt when the lock bolt is received by the recess in the door frame. ### Claim 9 (depends on 7) The method according to claim 7 wherein the bumper portion is resilient. ### Claim 10 (depends on 7) The method according to claim 7 wherein the striker member includes portions braced against portions of the door surround to dissipate impact when the lock bolt directly contacts the impact region. ### Claim 11 An apparatus for protecting hands and fingers comprising: (1) a door lock assembly mountable to a door including a normally extended reversibly extendable lock bolt having at least a throw length and a width, and wherein the lock bolt is retractable solely by actuating a door handle; (2) a striker member including a proximal end mountable to a door frame, a projecting portion extending from the proximal end of the striker member and extending outwardly from the door frame and having a distal end including a lock bolt impact region with bounds defining a backstop for the width and throw length of the lock bolt when the lock-type bolt is in direct contact with the lock bolt impact region whereby a gap is formed between a leading edge of the door and the door frame, and the gap is sufficiently wide to prevent hands and fingers from being crushed or amputated between the leading edge of the door and the door frame; and, (3) a bumper member behind the lock bolt impact region and bordering the lock bolt impact region, the bumper member projecting in a direction toward the door frame, and the bumper member configured to rebound against the door surround when the force of the lock bolt directly contacting the lock bolt impact region is excessive. ### Claim 12 (depends on 11) The apparatus according to claim 11, wherein complete closure of the door is impeded by the lock bolt directly contacting the lock bolt impact region impacting region. ### Claim 13 (depends on 11) The apparatus according to claim 11, wherein the striker member replaces a conventional door frame strike plate. ### Claim 14 (depends on 11) The apparatus according to claim 11, wherein portions of the striker member extend into a bolt recess. ### Claim 15 (depends on 11) The apparatus according to claim 11, wherein at least the bumper member is resilient.