US4735471A — Adjustable height bookcase

Claim 1

Independent Claim 296 words

A bookcase, comprising: a base having a pair of spaced apart and opposing sides, a top panel attached to the top end of said sides, a back panel attached to the rear end of said sides and a front panel attached to the rear end of said sides and a front panel attached to the front end of said sides, said top panel having a slot therethrough of a predetermined width and length extending vertically downwardly a predetermined distance adjacent to the interior length of each side and back panel to form a generally U-shaped, vertical support slot in said base; a vertical shelving section for storing books, curios and the like having a pair of generally rectangular and spaced apart, opposing sides, a back panel attached to the rear ends of said sides to form a generally U-shaped housing having a thickness and length on its edge generally coninciding with the dimensions of said support slot on the base so that the housing is slideably received and supported within said slot in order to raise or lower said housing to adjust the overall height of the bookcase; and means connected in an interferingly relationship between the base and vertical shelving section for positioning the shelving section at a predetermined height above the top panel of said base, wherein said positioning means includes at least one shelf support pin, a pair of vertical rows of holes spaced apart from one another located on each interior surface of the sides for removably receiving said pin, said pin extending outwardly form the hole at one end to overlap the surface of the top panel preventing the shelving section from sliding further down into the slot in the base when the pin is inserted in one of said holes.

Claim 2

Dependent Claim 296 words

A bookcase, comprising: a base having a pair of spaced apart and opposing sides, a top panel attached to the top end of said sides, a back panel attached to the rear end of said sides and a front panel attached to the rear end of said sides and a front panel attached to the front end of said sides, said top panel having a slot therethrough of a predetermined width and length extending vertically downwardly a predetermined distance adjacent to the interior length of each side and back panel to form a generally U-shaped, vertical support slot in said base; a vertical shelving section for storing books, curios and the like having a pair of generally rectangular and spaced apart, opposing sides, a back panel attached to the rear ends of said sides to form a generally U-shaped housing having a thickness and length on its edge generally coninciding with the dimensions of said support slot on the base so that the housing is slideably received and supported within said slot in order to raise or lower said housing to adjust the overall height of the bookcase; and means connected in an interferingly relationship between the base and vertical shelving section for positioning the shelving section at a predetermined height above the top panel of said base, wherein said positioning means includes at least one shelf support pin, a pair of vertical rows of holes spaced apart from one another located on each interior surface of the sides for removably receiving said pin, said pin extending outwardly form the hole at one end to overlap the surface of the top panel preventing the shelving section from sliding further down into the slot in the base when the pin is inserted in one of said holes.

Claim 3

Dependent Claim 52 words

A bookcase of claim 1, wherein a pair of holes on each interior side are on the same horizontal plane so that four pins, two on each side of the shelving section provide a stable four point support to maintain the shelving section in a predetermined height with respect to said base.

Claim 4

Dependent Claim 83 words

A bookcase of claim 2, wherein the base further includes a second pair of spaced apart sides defining the interior space of said base, a base shelf mounted between the first pair of opposing sides at the bottom thereof with the second pair of opposing sides mounted on top thereof and spaced from the first to form said the legs of the U-shaped slot and to form a cabinet enclosure with the base, front and second pair of sides of said base section.

Claim 5

Dependent Claim 33 words

A bookcase of claim 3, wherein the rear of said second sides of the base are spaced a predetermined distance from the back panel to form the bottom leg of the U-shaped slot.

Claim 6

Dependent Claim 34 words

A bookcase of claim 4, wherein the base includes a support rail connecting the rear uppermost section of the second sides to provide support for the top panel which overlaps said rear support rail.

Claim 7

Dependent Claim 33 words

A bookcase of claim 5, wherein the base includes a pair of doors hingedly affixed to the front of said cabinet so that the user can access the interior space of said cabinet.

Claim 8

Dependent Claim 250 words

A bookcase, comprising: a lower cabinet including a pair of spaced apart opposing sides, a generally rectangular top panel mounted on the top end of said sides, a back panel attached to the rear of said sides and spaced a predetermined distance from the rear edge of said top panel to form a rear slot, a front, a front panel attached to the front ends of said sides, a base shelf mounted between said sides at the bottom portion thereof, and a second pair of sides mounted on top of the base shelf between the first sides and closely adjacent and parallel to each first side to form slots therebetween that join the back slot, said back and side slots forming a single, generally U-shaped slot extending from the top panel to the base shelf; an upper housing for the book shelves including a pair of spaced apart, opposing vertical sides, a back panel onnected to the rear end of each side forming a generally U-shaped configuration coinciding with the dimensions of the U-shaped slot on the base so that the upper housing is slideably received within said base slot and supported therein, said sliding relationship between the upper housing and base provides for adjusting the overall height of the bookcase; means removably received within the opposing sides of said housing and engaging the surface of the top panel on said base for fixedly positioning the housing with respect to said base to adjust the overall height of the bookcase.

Claim 9

Dependent Claim 250 words

A bookcase, comprising: a lower cabinet including a pair of spaced apart opposing sides, a generally rectangular top panel mounted on the top end of said sides, a back panel attached to the rear of said sides and spaced a predetermined distance from the rear edge of said top panel to form a rear slot, a front, a front panel attached to the front ends of said sides, a base shelf mounted between said sides at the bottom portion thereof, and a second pair of sides mounted on top of the base shelf between the first sides and closely adjacent and parallel to each first side to form slots therebetween that join the back slot, said back and side slots forming a single, generally U-shaped slot extending from the top panel to the base shelf; an upper housing for the book shelves including a pair of spaced apart, opposing vertical sides, a back panel onnected to the rear end of each side forming a generally U-shaped configuration coinciding with the dimensions of the U-shaped slot on the base so that the upper housing is slideably received within said base slot and supported therein, said sliding relationship between the upper housing and base provides for adjusting the overall height of the bookcase; means removably received within the opposing sides of said housing and engaging the surface of the top panel on said base for fixedly positioning the housing with respect to said base to adjust the overall height of the bookcase.

Claim 10

Dependent Claim 53 words

A bookcase of claim 7, wherein said housing sides each have two spaced apart parallel rows of holes extending vertically thereon and said positioning means includes pins which are inserted within said holes on the same horizontal plane on each side to support a shelf or to position the housing above said base.

Claim 11

Dependent Claim 41 words

A bookcase of claim 8, wherein said base further includes a rear support rail connected between the uppermost rear end of said second sides to provide support for the top panel and further define the bottom leg of said U-shaped slot.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1991-04-05	1991-10-05	1992-04-05	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1995-04-05	1995-10-05	1996-04-05	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1999-04-05	1999-10-05	2000-04-05	$7700.00	Window Closed / Lapsed

Adjustable height bookcase

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