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US 4,047,774 AGranted
Student work table
AssigneeHanning-Kunststoffe Robert Hanning
InventorMichael Hanning
Life of this patent
Estimating the term…
Abstract
A table comprises a table frame with a work surface supported thereby, two opposite sides of the work surface being provided with hinge means which enable the work surface to be selectively raised relative to the table frame about one of the two hinge means.
Claims5
An adjustable table, comprising:
- a table frame having a recessed storage compartment;
- a work surface movably mounted on said table frame in overlying
- relation to said storage compartment;
- means for alternately raising either of two opposite edge portions of said work surface, including
- at least two vertically movable lifting members mounted on said table frame for urging said opposite edge portions of said work surface upward, and
- a slidable member movable in opposite directions for alternately engaging said lifting members to urge the so engaged lifting member upward to thereby raise the corresponding one of said opposite work surface edge portions;
- means for retaining the other of said work surface edge portions in a lowered position when said one work surface edge portion is raised, including
- a pair of substantially parallel, trough-like guides locatd in said table frame, said other work surface edge portion being guided in its corresponding trough-like guide when said one work surface edge portion is raised,
- a plurality of locking pins fixed to said table frame, and
- a plurality of pockets mounted on said work surface adjacent said opposite edge portions, the pockets adjacent said other edge portion engaging corresponding locking pins when said one work surface edge portion is raised to thereby retain said opposite edge portion in its trough-like guide;
- a plurality of hinge eyes mounted to said work surface adjacent said opposite edge portions;
- at least one pair of movable hinge pins mounted on said table frame adjacent said opposite work surface edge portions for engagement with said slidable member;
- and
- means normally biasing said movable hinge pins into engagement with said hinge eyes to prevent said opposite edge portions of said work surface from being rasied;
- wherein, when said slidable member is moved in one of its opposite directions to engage a lifting member, said slidable member concurrently engages one of said pins to urge said one hinge pin out of engagement with its associated hinge eye to thereby permit said lifting member to raise said one work surface edge portion.
12 more elements
Dependencies are inferred from the claim text.