ADJUSTABLE SCHOOL DESKTOP
A school desk is provided. The school desk has a frame and a desktop engaging the frame. The seat member engages the frame also to space the seat away from the desktop. Between the frame and the desktop, on the underside of the desktop, there are a plurality of brackets to allow for the adjustment of the desktop. That is to say, the desktop, when the adjusters are loosened, can be moved closer to the seated pupil or further away from the seated pupil, and the adjusters locked down to hold the desktop in a preselected position with respect to the seated pupil.
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This application claims priority from and the benefit of Provisional Patent application 61/313,475 filed Mar. 12, 2010, which application is incorporated by reference herein.
FIELD OF THE INVENTIONDesks, namely, school desks, with adjustable desktops.
BACKGROUND OF THE INVENTIONSchool desks need to accommodate various size pupils. Sometimes this involves students of different heights, in which case, vertical adjustment of the desk top with respect to the seat may be provided.
However, it has not been typical for school desks to have adjustability with respect to a horizontal or generally horizontal desktop and an attached seat.
Seat to desktop fore and aft positioning is typically a function of the girth of an individual, not simply their height. However, the girth of an individual may be accommodated in separate seat and desk sets by simply moving the chair back or forth with respect to the desk. However, with integral seat and desktops, the seat is usually at a fixed horizontal spaced-apart distance from the desktop.
Such a fixed distance will generally accommodate most students. However, for those students of exceptional girth, then there may be a need for moving the desktop writing surface spaced away from the seat. Moreover, an unusually tall student may require more room between the seat and the horizontal desktop writing surface to maintain a comfortable position as compared to a shorter student.
Heretofore this has not been provided in integral seat and desk combinations.
OBJECTS OF THE INVENTIONIt is an object of the present invention to provide for an integral desk and seat unit wherein the generally horizontal desktop may be adjustably set in a horizontal spaced apart position with respect to a fixed seat.
Frame 12 is seen to include a multiplicity of elongated members, typically square or round stock plated steel as is known in the art, which frame functions to support a desktop 14 and a seat member 16 in the manner set forth herein. Preferably, 1-inch square plated mild steel is used for most frame members. Moreover, it is seen that frame 12 provides vertical spacing of seat member 16 and desktop 12 above a horizontal support surface, such as a classroom floor, and further provides longitudinal spacing of the desktop in front of seat member 16. It is seen that seat member 16 may include a hook 19 engageable with the back surface of the back support member, generally near the top thereof. Seat back 16a may be supported by seat back sub-frame 23. A hook 19 may be provided on the back of seat 16, for hanging a backpack (not shown).
Turning now to the frame 12, it is seen to comprise a number of generally vertically or horizontally disposed members, including front vertical legs 18/20. From the position of a subject seated in the seat, front vertical leg 18 is seen to be on the right front side and front vertical leg 20 on the left front side. Likewise, a pair of rear vertical legs are provided, which rear vertical legs help space apart the seat member 16 from the floor and may include a right vertical leg 22 and left vertical leg 24. A basket 25 for books and the like may engage the underside of seat 16 or the frame 12 as seen in
The four vertical legs may be angled, but are generally predominantly in the vertical plane (with respect to the floor) as seen in the Figures. Moreover, front vertical legs and/or rear vertical legs may be provided with cross braces. Here, front vertical legs 18/20 are seen to provide vertical support to and spacing from the desktop 14 above a floor surface and to have a cross brace 26 therebetween to provide some lateral stability.
Support of seat member 16 may be provided by a seat base assembly 28 illustrated here in
Additional elements of the frame may include a rear vertical desktop support/right side 36 and longitudinal right side desktop support member 38, the two seen to locate vertically and laterally the desktop 14 with respect to the seat member 16. A second longitudinal front-to-rear side member may be provided to provide further support as seen with respect to element 40 in
Turning now to further elements of frame 12, it is seen that a desktop support sub-frame 42 may be provided for substantially engaging an underside 14a of desktop 14.
Desktop 14 may be rectangular or any other shape as known in the art. Here, a generally rectangular desktop 14 is provided having an underside 14a, a top side 14b, a front edge 14c, a rear edge 14d, and opposite right and left side edges 14e/14f.
Desktop support sub-frame 42 typically includes a pair of longitudinal members best seen with reference to
Adjustable attachment assembly 50 as best seen in
It is readily apparent by viewing the Figures that the end view profile of bracket 52/54 is defined by side walls 52d/52e and top wall 52f. Brackets 52/54 will snugly and slidably engage the square section stock of the longitudinal sub-frame members 44/48 when the brackets are affixed to the underside of the desktop as illustrated. With respect to
A thumb screw or knob with threaded stud may be used as illustrated. Such knob set screws 56 are dimensioned to be easily rotated with the hand and may include threaded shaft or studs 56a. Handle 56b may take on a number of shapes, but would be a shape large enough and dimensioned sufficiently to be rotated by hand. Knob 56 may preferably project outwards from bracket 52/54 on a diagonal as seen in
It is seen with respect to
A hex end (or other tool engaging) set screw 58 may be provided with a hex head and thread to match threaded insert 52h. A T-handled hex wrench (not shown) may be used by the teacher or other school personnel to set the screw tightly against longitudinal sub-frame member 44 or 48 as an override to the manual adjustment, which is provided with knob 56. That is to say, knob 56 requires only simple manipulation by the hand, which can be done by the student. However, if the teacher wants to make it more difficult to adjust the desktop, he/she may use the hex end set screw 58 or any other tool manipulated set screw 58 in conjunction with threaded insert 52h, so that even if a student was to manually manipulate knob 56, he/she could not reset the horizontal adjustment of the desktop 14 with respect to frame 12 unless he/she had a tool that could engage set screw 58.
Set screws 56/58 or any of them may be diagonally set (See 56 in
In
Although the invention has been described with reference to a specific embodiment, this description is not meant to be construed in a limiting sense. On the contrary, various modifications of the disclosed embodiments will become apparent to those skilled in the art upon reference to the description of the invention. It is therefore contemplated that the appended claims will cover such modifications, alternatives, and equivalents that fall within the true spirit and scope of the invention.
Claims
1. A desk, the desk comprising;
- a frame;
- a generally tabular desktop having a top and bottom surface, the desktop engaging the frame; and
- a seat member engaging the frame; wherein the frame includes a desktop support sub-frame having a plurality of sub-frame members; and wherein the desktop support sub-frame engages the desktop through the use of a horizontal adjustable attachment assembly which provides a fore and aft movement of the desktop with respect to the frame.
2. The invention in claim 1, wherein the horizontal adjustable attachment assembly includes at least a first channel member fixedly engaging the bottom surface of the desktop such that the first channel member and bottom surface slidably engage a first of the plurality of sub-frame members.
3. The invention of claim 2 wherein the seat member engages the frame so as to face the desktop; and
- wherein the horizontal adjustable attachment assembly is adapted to allow the desktop to move towards and away from the seat member.
4. The invention of claim 3 wherein the first channel member includes a first set screw, engaged therewith, for releaseably engaging the first of the plurality of sub-frame members.
5. The invention of claim 4 wherein the first channel member includes a second set screw, the second set screw for releasably engaging the first of the plurality of sub-frame members.
6. The invention of claim 5 wherein one of the first or the second set screw has a knob and the other of the first or second set screw has a tool engaging head.
7. The invention of claim 6 wherein at least one of the set screws engages the first channel member so as to be diagonal therewith.
8. The invention of claim 7 wherein the first channel member as engaged with the bottom surface of the desktop defines a generally rectangular channel and wherein the first channel member and the desktop slideably engage the first of the plurality of sub-frame members, which sub-frame member is rectangular, with the sub-frame member partially within the rectangular channel.
9. The invention of claim 8 further including a second channel member and wherein the plurality of sub-frame members includes a second sub-frame member, the second channel member fixedly engaged with the bottom surface of the desktop and wherein the desktop and second channel slideably engaged with the second sub-frame member.
10. The invention of claim 9 wherein the second channel member includes a first set screw, engaged therewith, for releaseably engaging the second sub-frame member.
11. The invention of claim 10 wherein the second channel member includes a second set screw, the second set screw for releasably engaging the second sub-frame member.
12. The invention of claim 11 wherein one of the first or the second set screw has a knob and the other of the first or second set screw has a tool engaging head.
13. The invention of claim 12 wherein at least one of the set screws engages the second channel member so as to be diagonal therewith.
14. The invention of claim 13 wherein the e second channel member as engaged with the bottom surface of the desktop defines a rectangular channel and wherein the second channel member and desktop slideably engage the second sub-frame member, which second sub-frame member is rectangular, with the second sub-frame member partially within the rectangular channel.
15. The invention of claim 14, wherein first and second sub-frame members are laterally spaced apart, in a longitudinally and parallel arrangement and wherein the first and second channel members have longitudinal axes coincident with the longitudinal sub-frame members.
16. The invention of claim 15 wherein the desktop is generally rectangular having sidewalls and wherein the first and second sub-frame members lay adjacent to and parallel with the sidewalls of the desktop.
17. The invention of claim 16 wherein the plurality of sub-frame members includes a crossmember, the crossmember for engaging the first and second sub-frame members generally perpendicular thereto.
18. The invention of claim 17 wherein the channels comprise molded plastic with steel inserts for threadably engaging the first and second set screws.
19. The invention of claim 18 wherein the tool engaging set screw includes a hex tool receiving head.
20. The invention of claim 19 further including stop pins for engaging the bottom surface of the desktop to limit the fore and aft movement thereof.
Type: Application
Filed: Mar 1, 2011
Publication Date: Sep 15, 2011
Applicant:
Inventor: Clarence Wenske (Shiner, TX)
Application Number: 13/037,536
International Classification: A47B 39/02 (20060101);