The present invention relates generally to door openers and, more particularly, to removable hands-free door pull openers.
The spread of infectious disease can be partly mitigated by reducing the number of shared objects required for touching in community spaces, including door handles, knobs, and lever sets.
There are devices currently marketed that permit arm-pull or foot-pull action to open the door, without requiring hand-touching of the knob or lever. These devices may be intended to minimize hand-touching of community shared door knobs and levers to prevent the spread of contagious disease. However, many of these devices require permanent attachment to the doors and can damage the look and integrity of the door surface, potentially altering fire safety ratings, as well as requiring more difficult installation and later removal of the devices.
A need exists for improved hands-free door pull openers, particularly those that can be non-permanently attached to doors, and be easily installed and removed leaving the doors damage-free.
The present invention relates generally to door openers and, more particularly, to removable hands-free door pull openers. Door latch bolt covers are also provided that allow doors to be opened without turning a knob or handle to disengage a latch if present, permitting the arm or foot-pull openers to be used on doors that would otherwise still require hand-touching to open the door. On many community/public doors such as external doors of a business, latches are completely disengaged during open business hours; or for community/public restrooms, there is often no latching mechanism. In these cases, the arm or foot pulls can be used completely hands-free; without the need for an additional “latch blocking” mechanism.
While the invention will be described in connection with certain embodiments, it will be understood that the invention is not limited to these embodiments. To the contrary, this invention includes all alternatives, modifications, and equivalents as may be included within the spirit and scope of the present invention.
According to one embodiment of the present invention, a removable hands-free door pull opener is provided for joining to a door. The door has a front surface, a back surface, and a free edge that receives a lock, and at least a portion of the front and back surfaces are generally planar. The door pull opener comprises:
a door clamping portion configured to clamp to a portion of the front and back surfaces of a door around the free edge of the door; and
a hook portion joined to the door clamping portion, wherein the hook portion comprises: an extension portion that is configured to extend away from the plane of the door; and a bend portion that extends in a direction that forms an angle with the extension portion, wherein the extension portion has a length that spaces the bend portion away from the plane of the door a sufficient distance for a person to insert their forearm between one surface of the door and the bend portion.
A method of attaching a hands-free door pull opener (such as that described above) to a door is also provided. The method may comprise placing the door clamping portion of the door pull opener around the free edge of a door on the side of the door so that the door clamping portion clamps to a portion of the front and back surfaces of the door. The door clamping portion exerts inwardly oriented forces against the front and back surfaces of the door that are sufficient to hold the centerline of the door clamping portion in a generally horizontal orientation on the door. In some embodiments, the door clamping portion may be adjustable, and the method may include a step of adjusting the door clamping portion. The extension portion of the door pull opener extends away from the plane of the door a sufficient distance for a person to insert their forearm between one surface of the door and the bend portion.
A foot pull door opener for joining to a bottom portion of a door is also provided. The foot pull door opener can either be joined to the bottom edge of the door, or the side edge of the door adjacent the bottom of the door. In some embodiments, the foot pull door opener comprises: a generally L-shaped base component comprising a base leg for placing adjacent to a bottom or side edge of a door and a first upright leg; a grip plate; and a clamping mechanism for adjusting the movement of the grip plate relative to the first upright leg and toward or away from the plane of a door.
The door pull opener and the foot pull door opener are constructed with the strength to attach firmly, retain their position with pulling arm (or foot) force, and may be ergonomically designed to be appropriate for arm or foot placement.
A door latch bolt cover is also provided. The door latch bolt cover comprises a door clamping portion configured in the form of a spring to clamp the free edge of a door that receives a lock and cover the door latch bolt.
Additional objects, advantages, and novel features of the invention will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following or may be learned by practice of the invention. The objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with a general description of the invention given above, and the detailed description of the embodiments given below, serve to explain the principles of the present invention.
It should be understood that the appended drawings are not necessarily to scale, presenting a somewhat simplified representation of various features illustrative of the basic principles of the invention. The specific design features of the sequence of operations as disclosed herein, including, for example, specific dimensions, orientations, locations, and shapes of various illustrated components, will be determined in part by the particular intended application and use environment. Certain features of the illustrated embodiments have been enlarged or distorted relative to others to facilitate visualization and clear understanding. In particular, thin features may be thickened, for example, for clarity or illustration.
The present invention relates generally to door openers and, more particularly, to removable hands-free door pull openers. Door latch bolt covers are also provided that functionally disengage door latches, thus allowing doors to be opened hands-free in conjunction with a door pull device and without requiring the additional actions of turning a knob or handle.
The door pull opener 30 comprises a door clamping portion (or “door attach clasp”) 32 configured to clamp to opposing sides of the lock stile 12 around the free edge 14 of the door, and a hook portion 34 that is joined to the door clamping portion 32. The door clamping portion 32 and the hook portion 34 can be integral parts of a single component, or they may comprise separate components that are joined together. In the embodiment shown in
The door clamping portion 32 can comprise any suitable structure that is capable of removably joining the door pull opener 30 to a door 10 as described above. The terms “removable” and “removably”, as used herein, mean that the door clamping portion 32 can be joined to the door without fasteners that penetrate the surface of the door and without marking, marring, or damaging the surface of the door. In the embodiment shown in
As shown in
In the embodiment shown in
As shown in
The hook portion 34 allows the door pull opener 30 to be pulled by a person's arms or feet, thus swinging a door open towards the user (in-swing). The hook portion 34 may have any suitable configuration that permits a person to insert their forearm between one side of the door and the hook portion 34 so that they can open the door with their forearm without touching the door 10 or the door pull opener 30 with their hands. The hook portion 34 may comprises a spacing/extension portion (or simply the “extension portion”) 50 and a bend portion 52.
The extension portion 50 is configured to extend outwardly away from the plane of the door 10. The extension portion 50 in these embodiments is joined to the inner leg portion 38 of the door clamping portion 32, and forms an angle, such as an angle of about 90° therewith. The extension portion 50 has a length that is sufficient to space the bend portion 52 away from the plane of the door 10 a distance sufficient for a person to insert their forearm between one side of the door and the bend portion 52. In some embodiments, the length of the extension portion 50 may be about 5 inches.
The bend portion 52 forms an angle with the extension portion 50. The angle formed therebetween is such that the bend portion 52 doubles back and extends in a direction generally parallel to the inner leg portion 38, but in the opposite direction as the distal end 44 of the outer leg portion 40. The extension portion 50 and the bend portion 52 may be considered to form a second generally U-shaped configuration in combination with the inner leg portion 38. The U-shaped structure formed in combination with the inner leg portion 38 forms a second mouth 54 (for a person's forearm) that opens in the opposite direction as the mouth 48 of the door clamping portion 32. This second mouth 54 may be any width suitable for allowing a person's forearm to fit therein. In some cases, the width of the second mouth 54 may range from greater than 3 inches to about 9 inches. In one embodiment, the width of the second mouth 54 may be about 5 inches.
The angle between the extension portion 50 and the bend portion 52 can be any suitable angle that permits a person to pull the door open with their forearm. In some cases, the hook portion 34 may have a generally L-shaped top view configuration. As shown in
The door pull opener 30 may be made from any suitable material or materials. The door pull opener 30 may be made out of a material that is thin enough so that when the device is placed on the door 10, the door can still shut and the latch functionality is retained if so desired (by fitting in the gap between the door, frame, and door jamb). Any appropriately resilient and/or strong material can be utilized for this purpose. In some cases, the door pull opener 30 may be made out of a thin piece of steel.
The door pull opener 30 with the adjustable clamping mechanism can be provided in several different configurations. In the embodiment shown in
The second component 66 comprises an L-shaped component that is movably (e.g., slidably) joinable to the first component 64. The second component 66 comprises a second partial clamp portion 72 that is configured for placing on a second side of the door 10 which is the same side that the hook portion 34 extends outward from. The second partial clamp portion 72 combines with the first partial clamp portion 70 to form the door clamping portion 32. The second component 66 is movably joined to the first component 64 in this embodiment by providing the first component 64 with a pair of parallel horizontally-oriented slots 74, and the adjustable portion 76 of the second component 66 that forms the other part of the L-shape and which in contact with the first component 64 with a pair of holes therein for screws with wing nuts thereon. This provides adjustability in direction of toward and away from the plane of the door (that is, normal to the plane of the door).
In addition to its adjustability, the adjustable door pull opener 30 shown in
As shown in
The foot pull door opener 80 shown in
The grip plate 86 may comprise a generally planar component at least a portion of which is movable relative to the second upright leg 92. All or a portion of the grip plate 86 is movable toward and away from the plane of the door 10. The lower edge of the grip plate 86 may be in contact with the base leg 88, joined to the base leg, or it may be raised above the base leg 88. If the lower edge of the grip plate 86 is joined to the base leg 88, then the upper portion of the grip plate 86 should be movable toward and away from the plane of the door 10. The grip plate 86 is movable relative to the second upright leg 92 in this embodiment by utilizing a clamping mechanism. Any suitable type or number of clamping mechanisms can be used, including, but not limited to: clamping knobs (twist or screw clamps), ratcheting mechanisms, spring mechanisms, and cam-style friction clamps.
In the embodiment shown in
The components of the foot pull door opener 80 shown in
The door latch bolt cover 120 comprises a door clamping element configured to clamp the lock stile 12 of a door (free edge of a door that receives a lock) and cover a door latch bolt. The door latch bolt cover 120 effectively disables a door's latching system, so that the door handle does not have to be utilized (virtually any door can thus be turned into a hands-free arm-pull door). The term “door handle”, as used herein, includes any type of handle, knob, or lever used to retract a door latch bolt.
The door latch bolt cover 120 may comprise any suitable structure that fits over the door latch bolt and maintains the door latch bolt in a retracted position while allowing the door 10 to close. In some cases, as shown in
The door latch bolt cover 120 shown in
The present invention may also be provided in the form of a kit of system comprising a door pull opener 30 and/or a foot pull door opener 80, and a door latch bolt cover 120.
The door pull opener 30, such as the embodiments shown in
There are numerous, non-limiting embodiments of the invention. All embodiments, even if they are only described as being “embodiments” of the invention, are intended to be non-limiting (that is, there may be other embodiments in addition to these), unless they are expressly described as limiting the scope of the invention. Any of the embodiments described herein can also be combined with any other embodiments in any manner to form still other embodiments.
For example, in one alternative embodiment, the adjustable door pull opener shown in
The door pull openers described herein can provide a number of advantages. It should be understood, however, that these advantages need not be required unless they are set forth in the appended claims. The door pull openers are important for minimizing the spread of germs by hand contact to shared surfaces, so would be beneficial for entry doors, educational facilities, even for handicapped persons (who might lack ability to grasp door knobs or levers). The door pull openers are unique in that the device installation is easy, non-permanent, and damage-free. The door pull openers are capable of being joined to either wood doors or metal doors.
The term “joined”, as used herein, encompasses configurations in which an element is directly secured to another element by affixing the element directly to the other element; configurations in which the element is indirectly secured to the other element by affixing the element to intermediate member(s) which in turn are affixed to the other element; and configurations in which one element is integral with another element, i.e., one element is essentially part of the other element. The term “joined” includes both those configurations in which an element is temporarily joined to another element, or in which an element is permanently joined to another element.
It should be understood that every maximum numerical limitation given throughout this specification includes every lower numerical limitation, as if such lower numerical limitations were expressly written herein. Every minimum numerical limitation given throughout this specification includes every higher numerical limitation, as if such higher numerical limitations were expressly written herein. Every numerical range given throughout this specification includes every narrower numerical range that falls within such broader numerical range, as if such narrower numerical ranges were all expressly written herein.
While the present invention has been illustrated by a description of one or more embodiments thereof and while these embodiments have been described in considerable detail, they are not intended to restrict or in any way limit the scope of the appended claims to such detail. Additional advantages and modifications will readily appear to those skilled in the art. The invention in its broader aspects is therefore not limited to the specific details, representative apparatus and method, and illustrative examples shown and described. Accordingly, departures may be made from such details without departing from the scope of the general inventive concept.
The invention described herein may be manufactured and used by or for the Government of the United States for all governmental purposes without the payment of any royalty.