Patent ID: 9211010
Filing Date: 2015-12-15
Classification: A47B

Abstract:
1. An earthquake-activated shelf security system comprising: a shelf; a first guide rail having a first retainer rest portion disposed along a top portion thereon; a second guide rail having a second retainer rest portion disposed along a top portion thereon; said first and second guide rails being attached to said shelf and having a portion generally perpendicular to said shelf; said first and second retainer rest portion forming a selected angle from a horizontal axis wherein a forward portion of said first and second retainer rest portion is lower than a rearward portion; a first upper retainer stop disposed on said first guide rail; a first lower retainer stop disposed on a lower portion of said first guide rail; said first upper retainer stop being disposed above said first lower retainer stop; said first upper retainer stop being smaller in diameter than said first lower retainer stop; a second upper retainer stop disposed on said second guide rail; a second lower retainer stop disposed on a lower portion of said second guide rail; said second upper retainer stop being disposed above said second lower retainer stop; said second upper retainer stop being smaller in diameter than said second lower retainer stop; an upper retainer having a first and second end; an upper looped end disposed on each of said first and second end; each upper looped end movably disposed on a respective one of said first and second guide rails wherein said upper retainer is constrained to move along said first and second guide rails; a lower retainer having a third and fourth end; a lower looped end disposed on each of said third and fourth end; said lower retainer being disposed below said upper retainer; each lower looped end movably disposed on a respective one of said first and second guide rails wherein said lower retainer is constrained to move along said first and second guide rails; said upper looped ends having a smaller diameter than said lower looped ends wherein said lower looped ends being adapted to fit over said upper retainer stops and being adapted to stop on said lower retainer stops; said upper looped ends being adapted to stop on said upper retainer stops; wherein said upper and lower retainers hold and protect items on said shelf from falling during a shaking event; and a first extra retainer stop disposed above said first lower retainer stop on said first guide rail; said first extra retainer stop having a smaller upper diameter and a larger lower diameter; a second extra retainer stop disposed above said second lower retainer stop on said second guide rail; said second extra retainer stop having a smaller upper diameter and a larger lower diameter; and wherein said lower retainer fits over said first and second extra retainer stops to stabilize said lower retainer by trapping said lower retainer between said first and second extra retainer stops and said first and second lower retainer stops.