Patent Publication Number: US-5020720-A

Title: Mailbox holder

Description:
BACKGROUND OF THE INVENTION 
     The use of a support arm which swings in a horizontal plane around a vertical support member to minimize impact damage to a mailbox is generally known. Illustrations of prior art setting forth such embodiments are Virblas U.S. Pat. No. 3,802,656; Steinman U.S. Pat. No. 4,172,576; Anderson U.S. Pat. No. 2,936,143; Hull U.S. Pat. No. 1,834,775; Chauncey U.S. Pat. No. 2,054,281; Conrad U.S. Pat. No. 2,433,763; Buck U.S. Pat. No. 2,605,073; and Dowker U.S. Pat. No. 4,187,978. Adaptations of this concept have included telescoping pipe joints providing a cam effect as in the Dowker patent and the Virblas patent; and a hinging mechanism attached to the vertical support member, as in the Buck patent. 
     Such existing devices essentially allow the horizontal support member to rotate about the primary vertical member. They, of necessity, have moving hinges, or joints, which are susceptible to corrosion, insertion of foreign matter and component failure. Further, these devices require some sort of incorporated gravity-activated cam action or an external, additional spring component to return the mailbox to its initial possession after any contact sufficient to activate the rotational feature. Additionally, the prior art generally provides for a horizontal, rotational, support arm which, when in its intended at-rest, functional position, is at right angles to the roadway and to the path of travel of vehicles, such as snowplows, whose contact with the mailbox causes the damage which these devices seek to eliminate or minimize. 
     The existing prior art fails to provide an apparatus which effectively reduces the potential for damage to the mailbox and support by vehicular contact and also provides for a return to the preferred initial position of the mailbox without manual assistance or without movable and external devices which are susceptible to breakage, corrosion or fouling by foreign material. 
     Accordingly, a need exists for a movable mailbox support which minimizes the damage effect of external contact and returns automatically to its intended position without the need for moving parts or external and superfluous return systems. 
     SUMMARY OF THE INVENTION 
     The present invention satisfies the need hereinbefore set forth by providing a mailbox support comprising a vertical support member with a support member extending horizontally therefrom. The support member is formed from a flexible resilient material and is further supported by a chain or cable extending from the top of the vertical member to the horizontal member at a point at or near the point where the mailbox is affixed. The horizontal support arm is positioned at approximately a 45 degree angle from a line extending at right angles from the roadway to the vertical member. Further protection is afforded to the mailbox by a steel flange, held under tension in a semi-circular radius around the actual mailbox support. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     Other objects, advantages and novel features of this invention will be set forth and will become apparent in the detailed description which follows and with reference to the accompanying drawings, in which 
     FIG. 1 is a perspective view of the invention in actual operation; 
     FIG. 2 is a perspective view of the turnbuckle means for adjusting the tension in the supporting cable; 
     FIG. 3 is a top perspective view of the invention illustrating a range of motion of the flexible horizontal member from position A to position B (shown in phantom outline). 
     FIG. 4 is a top perspective view of the invention (without mailbox) illustrating the range of motion of the flexible horizontal member from position A {shown in phantom outline) to position B necessary to move the mailbox and holder out of the path of an object striking the invention when the flexible horizontal member is positioned at right angles to the roadway. 
     FIG. 5 is a top perspective view of the invention (without mailbox) illustrating the range of motion of the flexible horizontal member from position A (shown in phantom outline) to position B necessary to move the mailbox and holder out of the path of an object striking the invention when the flexible horizontal member is positioned at a 45 degree angle from the roadway. 
     A preferred form of the invention is shown by reference to the drawings in particular. 
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The mailbox holder comprises a primary vertical member 10, of a height in excess of the normal distance above ground level for mailbox placement. Extending horizontally from the primary vertical member 10 is a relatively short hollow cylindrical member 11, at the normal distance above ground for mailbox placement. A flexible cylindrical member 12 of smaller diameter is affixed within the larger diameter cylindrical member and extends horizontally outward therefrom. Additional support for the flexible horizontal member 12 is provided by a cable or chain 13 affixed by clamps or other means 14 at or near the top of the primarily vertical member 10 and at or near the point of mailbox placement on the flexible horizontal member 12. The tension in said cable or chain is adjustable by a turnbuckle means 15. Located on the horizontal flexible member 12 outwardly of the point where the cable or chain 13 is affixed is a horizontal planar surface 16, preferably in rectangular form. Said planar surface 16 is aligned on the horizontal flexible member 12, at an angle 17 therefrom, sufficient to align the mailbox at right angles from the roadway. A standard mailbox 18 is mounted upon the horizontal planar surface 16 and affixed by bolts or other means. Affixed to the end of the flexible horizontal member 12 is a resilient flange 19 of spring steel or other matter capable of being bent and held under tension. Said flange 19 is aligned to form an externally convex protective bumper 20 held under tension by a bolt, or other means 21 located inwardly of the planar surface 16 on the flexible horizontal member 12. Said protective bumper will normally be turned on the side of the mailbox support which faces oncoming traffic. 
     In the preferred embodiment of the invention as shown in FIG. 1, the device is mounted so as to place the flexible horizontal member 12 at approximately a 45 degree angle from a line perpendicular to the roadway and flow of traffic 22, as shown in FIG. 5. Such placement greatly lessens the force of initial impact and requires a lesser amount of movement 23 of the flexible member 12 than does a placement wherein the flexible member 12 is perpendicular to the roadway 22, as shown in FIG. 4. 
     In a further embodiment of the invention the flexible horizontal member 12 is constructed of plastic conduit pipe. 
     While the best made and preferred embodiments of the invention have been presented and described in detail. It should be clearly understood that the invention is not limited thereto or thereby, and that various changes, adaptations and modifications may be made thereto and therein without departing from the spirit of the invention and the scope of the following claims.