Patent ID: 6488248
Filing Date: 2002-12-03
Classification: A47B,Y10S

Abstract:
In a mechanism for supporting a keyboard for movement relative to a work station having a front marginal edge and a downwardly facing mounting surface, and including an elongated guide track adapted to be fixed to said mounting surface to extend essentially normal to said marginal edge with a front end of said guide track disposed adjacent said marginal edge; said guide track having a mounting plate portion adapted to be fixed to said mounting surface and a pair of lengthwise extending edge portions including parallel connecting flange portions depending from said mounting plate portion and coplanar support flange portions carried by said connecting flange portions and arranged in a parallel facing relationship to said mounting plate portion and to cooperate therewith to define facing mounting channels, a trolley supported by said guide track to move lengthwise thereof, and means for mounting said keyboard on said trolley, the improvement comprising in combination:said trolley having a first pair of support rollers mounted for rotation about a horizontally extending first axis with one of said support rollers of said first pair disposed in each of said mounting channels, a second pair of support rollers mounted for rotation about a horizontally extending second axis disposed parallel to said first axis with one of said support rollers of said second pair disposed in each of said mounting channels, said first and second pairs of support rollers having oppositely facing surfaces thereof spaced from facing surfaces of said connecting flange portions sufficiently to loosely receive said support rollers therebetween and permit said support rollers to freely move lengthwise of said guide track within said mounting channels for supporting said trolley for movement lengthwise of said guide track from adjacent said front end in which said keyboard is adapted to be disposed in a forward use position towards an opposite end thereof in which said keyboard is adapted to be disposed in a rearward recessed position, and follower means upstanding from said trolley in a direction towards said mounting plate portion and intermediate said oppositely facing surfaces of said support rollers; and a guide member fixed to said mounting plate portion and defining a guide channel disposed essentially parallel to said facing surfaces of said connecting flange portions and having a front end disposed immediately adjacent said front end of said guide track and a rear end, said guide channel slidably engaging with said follower means for constraining said trolley against movement transversely of said guide track when said trolley is disposed adjacent said from end of said guide track, and said guide channel having a length substantially less than the length of said guide track.