Table with Tippable Tabletop
A table with a “seamless” tippable tabletop and a method of its use are configured for ease of maneuvering between the deployed and stowed position and compact stacking. A latch assembly may have a first latch that releasably retains the tabletop in the deployed position and a second latch that releasably retains the tabletop in the stowed position. The first latch may utilize a pin selectively engaging a corresponding catch to latch the tabletop in position and a manually operated handle to unlatch the tabletop from position. The second latch may utilize a pin selectively engaging a corresponding catch to latch the tabletop in position and unlatch the tabletop from position under a tilting force tending to move the tabletop from the stowed position to the deployed position. Counterweights may be mounted on or in the bottom surface of the tabletop to control movement of the tippable tabletop.
This invention relates generally to foldable, nesting tables, and more particularly, to tables with a tippable tabletop that can be latched in the stowed and deployed positions and/or with a counterweight mounted beneath the tabletop to assist in the control of movement. The invention additionally relates to a method of using such an apparatus.
2. Discussion of the Related ArtFoldable nesting tables are a frequently used furniture option for commercial, institutional, and private use as they provide more compact storage when the table is not in use. These tables may be deployed for use and then folded and nested with other tables for storage when not in use, for example, for cleaning or maintenance of the deployed table area.
In many instances, these tables provide a single piece or “seamless” tabletop that is mounted on a mobile pedestal. The entire tabletop tips or pivots about a horizontal axis between a deployed position in which the tabletop extends generally horizontally during use and a stowed position in which the tabletop extends generally vertically during storage.
One of the drawbacks of these tippable tabletops is that the size and weight of the tabletop make it difficult to maneuver the table between the deployed and stowed position. For example, it may be difficult to control the movement and momentum of a large and heavy tabletop, causing the tabletop to slam down on the base. Some tables have shocks or springs that dampen this downward motion of the tabletop, but these dampeners add to the cost and complexity of the table.
Another drawback to tippable tabletops is that they must be retained in position to prevent unwanted tipping, requiring manipulation of cumbersome fasteners or latching assemblies whenever it is desired to maneuver the tabletop between the deployed and stowed positions.
In addition, tippable tabletops are difficult to store since the base and pivoting frame must be broad enough to support the large and heavy tabletop while also preventing the table from tipping over. As such, nesting of the tables front-to-back generally takes up a lot of storage space.
In light of the foregoing, a table with a tippable tabletop that counterbalances gravitational forces when the table tilts from the stowed position to the operative position without the need for air shocks or cushions, is easy to unlatch between the operative and stowed positions without complex fasteners or latches, and/or has a narrow form factor for space efficient front-to-back nesting is desired within the field.
SUMMARY OF THE INVENTIONOne or more of the above-identified needs is met by providing a table with a tippable tabletop, a base, and a latch assembly. The tabletop may be a seamless tabletop that is connected to the base by a hinge arrangement or other structure permitting tabletop movement about a horizontal axis between its deployed and stowed positions. A latch assembly may have a first latch that releasably retains the tabletop in the deployed position and a second latch that releasably retains the tabletop in the stowed position. The first latch may utilize a pin selectively engaging a corresponding catch to latch the tabletop in position and a manually operated handle to unlatch the tabletop from position. The second latch may utilize a pin selectively engaging a corresponding catch to latch the tabletop in position and automatically unlatch the tabletop from position under a tilting force tending to move the tabletop from the stowed position to the deployed position. Counterweights may be mounted on or in the bottom surface of the tabletop to counterbalance gravitational forces imposed on the tabletop when the tabletop tilts from the stowed position to the deployed position.
In accordance with a first aspect of the invention, a table with a tippable top is provided having a base, a tabletop, and a latch assembly. The tabletop is supported by the base and has a first surface and a second surface disposed opposite the first surface. The tabletop is movably coupled to the base so as to be selectively tiltable about a horizontal axis 1) from a first, operative position in which the first surface extends at least substantially horizontally and forms an upper surface of the table 2) to a second, stowed position in which the first surface extends at least substantially vertically. The latch assembly is supported by the second surface of the tabletop and the base, the latch assembly having a first latch that releasably retains the tabletop in the first position and a second latch that releasably retains the tabletop in the second position. Each of the first and second latches has a pin that selectively engages a corresponding catch to latch the tabletop in position and that selectively disengages from the corresponding catch to unlatch the tabletop from position.
In one embodiment, the pin of the second latch disengages from the associated catch to unlatch the tabletop from its stowed position by applying a tilting force tending to move the tabletop from the second position to the first second position.
In one embodiment, the pin of the first latch disengages the associated catch under actuation of a manually operated handle that is operatively coupled to the pin of the first latch.
In one embodiment, the pin of the first latch disengages from the associated catch under actuation of a manually operated handle that is operatively coupled to the pin of the first latch.
In one embodiment, the pins of the first position latch and second position latch are mounted no more than 0.020 inches, and even no more than 0.005 inches, from the second surface of the tabletop.
In one embodiment, the table is dimensioned and configured such that, when the table is latched in the second position thereof, the table can be positioned adjacent a second table of identical construction in a front-to-back relationship with a horizontal spacing between the first surface of the first table and the first surface of the second table of no-more than 7″ therebetween.
In accordance with yet another aspect of the invention, a table with a tippable top is provided having a base, a tabletop, and a counterweight. The tabletop is supported by the base and has a first surface and a second surface disposed opposite the first surface. The tabletop is movably coupled to the base so as to be selectively tiltable 1) from a first position, operative in which the first surface extends at least substantially horizontally 2) to a second, stowed position in which the first surface extends at least substantially vertical. The counterweight is positioned substantially within a bottom half of the tabletop when the tabletop is in the second position and is configured to counterbalance gravitational forces imposed on the tabletop when the tabletop tilts from the second position thereof to the first position thereof.
In one embodiment, the counterweight comprises a metal plate that is supported within a recess of the second surface of the tabletop. The counterweight may be mounted between side brackets of a frame supported on the second surface of the tabletop.
These and other objects, advantages, and features of the invention will become apparent to those skilled in the art from the detailed description and the accompanying drawings. It should be understood, however, that the detailed description and accompanying drawings, while indicating preferred embodiments of the present invention, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the present invention without departing from the spirit thereof, and the invention includes all such modifications.
Preferred exemplary embodiments of the invention are illustrated in the accompanying drawings in which like reference numerals represent like parts throughout, and in which:
A wide variety of tables could be constructed in accordance with the invention as defined by the claims. Hence, while the preferred embodiments of the invention will now be described with reference to a “seamless” foldable table, it should be understood that the invention is in no way so limited.
Referring now to
The tabletop 22 is movably mounted on the base 24 by the hinge assembly 26 so as to be movable between the first, operative position in which first 36 and second 38 major surfaces of the tabletop 22 extend substantially horizontally, or substantially parallel to a ground, as shown in
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The base 24 may be made of commercial-grade cast iron, steel (e.g., 12-gauge steel or 1.4-gauge steel), stainless steel, or aluminum. If the tabletop 22 is to be used while the user is standing, the base 24 height, as measured from the ground to the bottom surface 38 of the tabletop, may be approximately 30 to 50 inches, and more typically 40 inches. If the tabletop 22 is to be used while the user is sitting, the base 24 height may be approximately to 36 inches, and more typically 28 inches, to allow for chair(s) and a seated user's legs to fit underneath the tabletop 22.
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The tabletop 2.2 is coupled to the base 24 or base frame 70 by the hinge assembly 26. The hinge assembly of this embodiment has three spaced apart hinged joints with pivot pins 40. Referring to
The second 112 and third 114 lateral hinges of the hinge assembly 26 may be each formed by a pair of vertically extending parallel plates 42 having holes at a back end for receiving a pivot pin 40 extending horizontally through the parallel plates 42, as well as the left and right longitudinal tubes 82, 84 extending between the parallel plates 42 to define hinge joints and defining an axis of rotation 28. A top side of the base frame 70 may receive the left and right longitudinal tubes 82, 84 when the tabletop 22 is in the first, operative position, and a rear side of the parallel plates 42 may receive the left and right longitudinal tubes 82, 84 when the tabletop 22 is in the second, stowed position.
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It is understood that any number of latches 140 and pins 142 may be used to encompass the second latch assembly 32, including two or three,
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The counterweight 34 may be supported on or within the second surface 38 of the tabletop 22. The counterweight 34 may be generally equally distributed within the bottom half 160 of the tabletop 22. However, it is contemplated that the counterweight 34 is spread out evenly longitudinally between top and bottom ends and/or laterally between left and right ends, of the bottom half 160 of the tabletop 22.
In one embodiment, the counterweight 34 may be provided in the form of a steel plate mounted to the second surface 38 within a recess 162 in the second surface 38 formed between the side brackets 90 of the tabletop support frame 80. The counterweight 34 may take a V-shaped configuration corresponding to the recess 162 between the side brackets 90 of the tabletop support frame 80. It is understood that the counterweight 34 may be a single piece or multiple pieces establishing the necessary weight on the bottom end of the tabletop 22. The counterweight 34 may be retained by a cover 164 coupled to the side brackets 90 and concealing and securing the counterweight 34 within the recess 162.
To determine the amount of weight needed to counteract the gravitational forces on the tabletop 22 in use, the force on the top half 166 and distance from the center of gravity of the tabletop 22 from the pivot axis 29 are multiplied to determine the total applied torque. The applied torque is divided by the distance between the pivot axis of the tabletop 22 and the center of gravity of the counterweight 34 to determine the desired mass of the counterweight 34. The counterweight 34 may have an aggregate mass that varies depending on the table 20 size and shape and/or the location of the center of mass of the counterweight 36. In one embodiment, the aggregate weight of the counterweights 34 may be on the order of 10 to 15 pounds for a 40-inch circular tabletop 22 and may be positioned 0.5″ to 6″ beneath the pivot axis 29.
if its mass and location are properly selected, the counterweight 34 may balance the tabletop 22 sufficiently to allow the tabletop 22 to remain in an intermediate position, for example, as shown in
In operation, the user may use the table 20 with the tabletop 22 in the first, operative position, as seen in
When the user desires to use the table 20 in the operative position, the user may tilt the tabletop 22 downward from the second position to the first position. The pin 142 of the second latch assembly 32 will automatically disengage the centrally positioned latch 140 through the tilting force of the tabletop 22, as seen in
As discussed above, the counterweights 34 counterbalance or resist the gravitational force imposed on the tabletop 22 as it rotates in order to better control the tilting force, as seen in
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In the front-to-back relationship shown in
Many changes and modifications could be made to the invention without departing from the spirit thereof. The scope of these changes and modifications will become apparent from the appended claims:
Claims
1. A table with a tippable top comprising:
- a base;
- a tabletop supported by the base and having a first surface and a second surface disposed opposite the first surface, wherein the tabletop is movably coupled to the base so as to be selectively tiltable about a horizontal axis 1) from a first, operative position in which the first surface extends at least substantially horizontally and forms an upper surface of the table 2) to a second, stowed position in which the first surface extends at least substantially vertically; and
- a latch assembly supported by the second surface of the tabletop and the base, the latch assembly having a first latch that releasably retains the tabletop in the first position and a second latch that releasably retains the tabletop in the second position;
- wherein each of the first and second latches has a pin that selectively engages a corresponding catch to latch the tabletop in position and that selectively disengages from the corresponding catch to unlatch the tabletop from position.
2. The table of claim 1, wherein the pin of the second latch disengages the associated catch to unlatch the tabletop from its stowed position by applying a tilting force tending to move the tabletop from the second position to the first second position.
3. The table of claim 2, wherein the catch of the second catch comprises a plate having a detent positioned adjacent to an inclined surface of the plate, permitting the pin to roll along the inclined surface, between the pin's engaged and disengaged position.
4. The table of claim 2, wherein the pin of the second latch is moveable longitudinally within a vertically extending slot against a spring biasing the pin in the engaged position.
5. The table of claim 2, wherein the pin of the first latch disengages from the associated catch under actuation of a manually operated handle that is operatively coupled to the pin of the first latch.
6. The table of claim 5, wherein the catch of the first latch is a plate having a detent, and the pin of the first latch is coupled to the handle such that manually manipulation of the handle forces the pin to move from the engaged position to the disengaged position.
7. The table of claim 5, wherein the pin of the first latch is moveable laterally within a horizontally extending slot against a spring biasing the pin to the engaged position,
8. The table of claim 1, wherein the first and second pins are mounted on the tabletop and the first and second catches are mounted on the base.
9. The table of claim 8, wherein the pins of the first latch and second latch are mounted no more than 0.020 inches from the second surface of the tabletop.
10. The table of claim 9, wherein the pins of the first latch and second latch are mounted no more than 0.005 inches from the second surface of the tabletop,
11. The table of claim 1, wherein the table is dimensioned and configured such that, when the tabletop is latched in the second position thereof, the table can be positioned adjacent a second table of identical construction in a front-to-back relationship with a horizontal spacing of no-more than 7″ therebetween.
12. The table of claim 1, further comprising a counterweight positioned between a center of the tabletop and a bottom end of the tabletop when the tabletop is in the second position thereof and configured to counterbalance gravitational forces imposed on the tabletop when the tabletop tilts from the second position thereof to the first position thereof.
13. The table of claim 12, wherein the counterweight comprises at least one plate mounted on or in the second surface of the tabletop.
14. A table with a tippable top comprising:
- a base;
- a tabletop supported by the base and having a first surface and a second surface disposed opposite the first surface, wherein the tabletop is movably coupled to the base so as to be selectively tiltable about a horizontal axis 1) from a first, operative position in which the first surface extends at least substantially horizontally and forms an upper surface of the table 2) to a second, stowed position in which the first surface extends at least substantially vertically; and
- a latch assembly supported by the second surface of the tabletop and the base, the latch assembly having a first latch that releasably retains the tabletop in the first position and a second latch that releasably retains the tabletop in the second position;
- wherein each of the first and second latches has a pin that is provided on the tabletop that that selectively engages a corresponding catch that is provided on the base to latch the tabletop in position and that selectively disengages from the corresponding catch to unlatch the tabletop from position,
- wherein the pin of the second latch disengages from the associated catch to unlatch the tabletop from its stowed position by applying a tilting force tending to move the tabletop from the second position to the first second position,
- wherein the pin of the first latch is coupled to a manually operated handle, and
- wherein the handle is configured such that manually manipulation of the handle forces the pin to move from the engaged position to the disengaged position.
15. The table of claim 14, wherein the first latch includes a plate having a detente and wherein the pin of the first latch is coupled to the handle such that pulling the handle forces the pin to move from the engaged position to the disengaged position.
16. The table of claim 14, wherein the pins of the first position latch and second position latch are mounted no more than 0.020 inches from the second surface of the tabletop.
17. The table of claim 14, further comprising a counterweight positioned between a center of the tabletop and a bottom end of the tabletop when the tabletop is in the second position thereof and configured to counterbalance gravitational forces imposed on the tabletop when the tabletop tilts from the second position thereof to the first position thereof.
18. A table comprising:
- a base;
- a tabletop supported by the base and having a first surface and a second surface disposed opposite the first surface, wherein the tabletop is movably coupled to the base so as to be selectively tiltable 1) from a first position, operative in which the first surface extends at least substantially horizontally 2) to a second, stowed position in which the first surface extends at least substantially vertical; and
- a counterweight positioned substantially within a bottom half of the tabletop when the tabletop is in the second position and configured to counterbalance gravitational forces imposed on the tabletop when the tabletop tilts from the second position thereof to the first position thereof.
19. The table of claim 18, wherein the counterweight comprises a plate that is supported at least partially within a recess of the second surface of the tabletop.
20. The table of claim 18, wherein the counterweight is a plate mounted between side brackets of a frame supported on the second surface of the tabletop.
21. The table of claim 18, further comprising a latch assembly supported by the second surface of the tabletop and the base, the latch assembly having a first latch that releasably retains the tabletop in the first position and a second latch that releasably retains the tabletop in the second position;
- wherein each of the first and second latches has a pin that that selectively engages a corresponding catch to latch the tabletop in position and that selectively disengages from the corresponding catch to unlatch the tabletop from position.
Type: Application
Filed: Jun 26, 2018
Publication Date: Dec 26, 2019
Inventors: Adam Berg (Mukwonago, WI), Dennis Kapitan (Elkhorn, WI)
Application Number: 16/018,676