Patent ID: 7086643

Claim:
A work support apparatus ( 20 ) for positioning a work piece ( 22 , 222 ) against a stop ( 24 ), said apparatus comprising: a table ( 26 , 226 ) having a top surface ( 28 , 228 ) and a recess ( 30 , 230 ) therein; a spring pin assembly ( 32 , 232 , 332 ) disposed in said recess ( 30 , 230 ) and extending above said top surface ( 28 , 228 ) for biasing the work piece ( 22 ) against the stop ( 24 ); said spring pin assembly ( 32 , 232 , 332 ) including a housing ( 38 , 238 , 338 ) and a retaining pin ( 40 , 240 , 340 ) pivotably supported by said housing ( 38 , 238 , 338 ) for pivotable movement of said retaining pin ( 40 , 240 , 340 ) and a compression spring ( 42 , 242 , 342 ) disposed within said housing ( 38 , 238 , 338 ) for urging said retaining pin ( 40 , 240 , 340 ) into pivotable engagement with said housing ( 38 , 238 , 338 ): a holding mechanism ( 34 , 234 , 334 ) removably retaining said housing ( 38 , 238 , 338 ) in said recess ( 30 , 230 ) without interfering with movement of the work piece ( 22 , 222 ) over said top surface ( 28 , 228 ); and a tool receiving device ( 36 , 236 , 336 ) disposed below said top surface ( 28 , 238 ) for engaging said holding mechanism ( 34 , 234 , 334 ) with a tool below said top surface ( 28 , 228 ) of said table ( 26 , 226 ) for installing and removing said spring pin assembly ( 32 , 232 , 332 ) from said recess ( 30 , 230 ) in said table ( 26 , 226 ).