US4047774A — Student work table

Claim 1

Independent Claim 339 words

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.

Claim 2

Dependent Claim 339 words

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.

Claim 3

Dependent Claim 49 words

A table as defined in claim 1 further comprising a cupboard part mounted on said table frame, locking means for said cupboard part and manually operable means attached to said slide and extending into said cupboard part to prevent actuation of said slide except from within said cupboard part.

Claim 4

Dependent Claim 26 words

A table as defined in claim 2 further comprising linkage means associated with said locking means for locking said slide when said cupboard part is locked.

Claim 5

Dependent Claim 33 words

A table as defined in claim 1, further comprising laterally resilient rests mounted on said work surface for selectively supporting said work surface in raised positions on rest edges provided on the table.

Claim 6

Dependent Claim 31 words

A table as defined in claim 4 wherein one of said rest edges comprises a top of a table plate into which said work surface is let to lie flush therewith.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1980-09-12	1981-03-14	1981-09-13	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1984-09-12	1985-03-14	1985-09-13	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1988-09-12	1989-03-14	1989-09-13	$7700.00	Window Closed / Lapsed

Student work table

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