Door restraint

Abstract

A door restraint includes a base pad mounted on a wall adjacent to a designated door at a position where the doorknob would impact the wall if the door were fully opened. Attachable to the base pad is a housing having a deployable, spring-biased strap received therein. A loop at a distal end of the strap is secured to the doorknob to restrain the door in a fully opened position.

Claims

1. A door restraint comprising: a base component mounted on a wall, adjacent to a door at a position where an outer doorknob impacts the wall if the door were fully opened, said base component including a front surface having a plurality of keyways thereon; a housing having a front wall, a rear wall, and at least one peripheral edge; a plurality of rivets on the rear wall of said housing, said rivets positioned and configured to releasably slide within said keyways; a deployable strap received within said housing and wrapped around a spring-biased spool, said strap having a loop at a distal end for securing to a doorknob to maintain said door in an open position.

2. The door restraint according to claim 1 further comprising a pad on the front surface of said housing for absorbing impact from the doorknob thereby preventing the doorknob from puncturing said wall.

3. The door restraint according to claim 2 wherein said pad includes a planar or convex outer surface for absorbing impact from the doorknob.

4. The door restraint according to claim 1 further comprising a pull tab attached to said loop that prevents the strap from being completely retracted within the housing interior.

5. The door restraint according to claim 4 wherein said pull tab rests within a tapered slot that maintains the pull-tab parallel to the housing front surface to facilitate grasping by a user.

6. The door restraint according to claim 1 wherein said housing further includes a security locking mechanism that prevents a child from deploying or releasing the strap.

7. The door restraint according to claim 6 wherein said security locking mechanism includes a release button on said housing.

8. The door restraint according to claim 7 wherein said release button actuates a spring-biased shaft that moves a latch pawl into and out of a pawl drive to releasably lock the spool, whereby when said button is depressed, the spool is rotatable to permit extension of the strap while the spool retracts the strap as far as possible when the strap is subsequently released, and when said button is released, the latch pawl reseats to lock the spool and prevents the strap from being extended or retracted.

9. The door restraint according to claim 1 wherein said deployable strap is biased in a retracted position.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a front, plan view of the door restraint according to the present invention.

(2) FIG. 2 is a rear view of the base pad.

(3) FIG. 2A is an isolated, detailed view of an exemplary rivet.

(4) FIG. 3 is an isolated view of the base pad.

(5) FIG. 3A is a side view of the base pad

(6) FIG. 4 is a side view of the door restraint attached to a wall.

(7) FIG. 5 is an isolated view of the deployable strap.

(8) FIG. 6 depicts the device restraining a door in the fully opened position.

(9) FIG. 7 is an exploded view of the door restraint.

DESCRIPTION OF THE PREFERRED EMBODIMENT

(10) The present invention relates to a door restraint comprising a base component 1 mounted on a wall 2, adjacent to a designated door 3 at a position where the outer doorknob 4 would impact the wall if the door were fully opened. The base component 1 includes a front surface having a plurality of keyways 5 for removably securing a deployable strap mechanism 6.

(11) The strap mechanism 6 includes a circular housing 7 having a front wall, a rear wall, at least one peripheral edge and an interior chamber. Protruding from the rear wall are a plurality of T-rivets 20 that are positioned and configured to releasably slide within the keyways 5 on the base component. On the front surface of the housing is a pad 8 for absorbing the impact of the doorknob 4. Preferably, the pad includes a planar or convex surface 66 for receiving and conforming to the doorknob. Therefore, in addition to a door restraint, the device also functions as a wall protector that prevents the doorknob 4 from puncturing the adjacent wall 2. Extending from an opening 10 on the peripheral edge of the housing is a deployable strap 11 wound around a spring-biased spool 12. A distal end of the strap includes a loop 13 having a pull-tab 14 attached thereto that prevents the strap from being completely retracted within the housing interior. When the strap is retracted, it rests within a tapered slot that maintains the pull-tab parallel to the housing front surface to facilitate grasping by a user.

(12) The housing further includes a security release button 15 that prevents a child from deploying or releasing the strap. The release button 15 actuates a spring-biased shaft that moves a latch pawl into and out of a pawl drive to releasably lock the spool. When the button is depressed, the spool is rotatable to permit extension of the strap while the spool retracts the strap as far as possible when the strap is subsequently released. When the button is released, the latch pawl reseats to lock the spool and prevents the strap from being extended or retracted.

(13) To restrain a door, the user mounts the base component at a position where the outer doorknob 4 would impact the wall if the door were fully opened. The strap mechanism rivets 20 are inserted into the keyway and the housing is rotated to lock it in place. The user opens the door 3 fully, depresses the release button 15, and secures the loop 13 around the inner doorknob 25. When the strap 11 is released, the spring-biased spool 12 retracts it until the outer doorknob 4 is pulled against the strap mechanism 6 as depicted in FIG. 5.

(14) The above-described device is not limited to the exact details of construction and enumeration of parts provided herein. For example, although the security lock has been primarily described as rachet pawl mechanism, it could also include a tension mechanism with a manual lock and unlock feature, an automatic lock that utilizes a retractor mechanism with a release mechansim, a ratchet gear that keeps the spool locked until released by a user, or any similar equivalent. Furthermore, the size, shape, and materials of construction of the various components can be varied without departing from the spirit of the present invention.

(15) Although there has been shown and described the preferred embodiment of the present invention, it will be readily apparent to those skilled in the art that modifications may be made thereto which do not exceed the scope of the appended claims. Therefore, the scope of the invention is only to be limited by the following claims.