초록 ▼

A paper towel holder includes a base with a central aperture and a hollow spindle extending up from the base. A flexible disc is secured to the underside of the base and has a substantially flat bottom surface. A central aperture extends through the disc and communicates with the hollow interior of

A paper towel holder includes a base with a central aperture and a hollow spindle extending up from the base. A flexible disc is secured to the underside of the base and has a substantially flat bottom surface. A central aperture extends through the disc and communicates with the hollow interior of the spindle. A valve stem is slidably mounted in the spindle. The value stem will fall gravitationally into sealing engagement with portions of the disc surrounding the central aperture so that the central aperture is sealed. In this condition, any attempt to tilt or lift the paper towel holder will create a partial vacuum beneath the disc that will resist such lifting or tilting. However, the valve stem can be lifted up relative to the remainder of the towel holder to open the aperture in the disc. No partial vacuum will exist below the disc and the paper towel holder can be moved easily.

대표청구항 ▼

1. A paper towel holder, comprising:a base with opposite top and bottom faces and a central aperture extending through the base;a substantially flat flexible disc secured to the bottom surface of the base and having a central aperture extending therethrough and communicating with the aperture in the

1. A paper towel holder, comprising:a base with opposite top and bottom faces and a central aperture extending through the base;a substantially flat flexible disc secured to the bottom surface of the base and having a central aperture extending therethrough and communicating with the aperture in the base, the disk having an outer periphery and a bottom surface, the bottom surface including a substantially planar section extending inwardly from the outer periphery a major portion of a distance between the outer periphery and the central aperture;a center support mounted to the base and extending upwardly therefrom; anda valve stem movably disposed relative to the base, the disc and the center support for movement from a first position where said valve stem seals said aperture through said disc and a second position where said valve stem opens said aperture in said disc. 2. The paper towel holder of claim 1, wherein the disc has a selected radius, and wherein the planar section of the bottom surface of the disc extends inwardly from the outer periphery of the disc for a distance at least approximately 60% of the radius. 3. The paper towel holder of claim 1, wherein the flat flexible disc has a top surface the base and an annular valve seat inwardly from the aperture in the base and surrounding the aperture in the disc, the valve stem having a lower end configured for engaging said valve seat of said disc. 4. The paper towel holder of claim 3, wherein the top of the disc includes an annular collar surrounding the valve seat, the valve stem being dimensioned for telescoped engagement in the collar of the disc. 5. The paper towel holder of claim 1, wherein said valve stem has a tip dimensioned for telescoping into the aperture in the disc when the valve stem is in the first position, the tip including a plurality of channels for permitting flow of air when the valve stem is in the second position. 6. A paper towel holder, comprising:a base with opposite top and bottom faces and a central aperture extending through the base;a substantially flat flexible disc secured to the bottom surface of the base and having a central aperture extending therethrough and communicating with the aperture in the base;a center support mounted to the base and extending upwardly therefrom; anda valve stem movably disposed relative to the base, the disc and the center support for movement from a first position where said valve stem seals said aperture through said disc and a second position where said valve stem opens said aperture in said disc, wherein the paper towel holder is for holding a roll of paper towels wound onto a core, the core having a selected length, the center support of the paper towel holder having a length substantially equal to the length of the core of the roll of paper towels, the valve stem having an end remote from said disc projecting beyond the end of the center support to enable manipulation of said valve stem. 7. A paper towel holder wherein, comprising:a base with opposite top and bottom faces and a central aperture extending through the base, the bottom surface of the base includes at least one downwardly extending circumferential wall;a substantially flat flexible disc secured to the bottom surface of the base and having a central aperture extending therethrough and communicating with the aperture in the base, the disc having a top surface and the circumferential wall of the base contacting the top surface of the disc;a center support mounted to the base and extending upwardly therefrom; anda valve stem movably disposed relative to the base, the disc and the center support for movement from a first position where said valve stem seals said aperture through said disc and a second position where said valve stem opens said aperture in said disc. 8. A paper towel holder, comprising:a base with opposite top and bottom faces and a central aperture extending through the base;a substantially flat flexible disc secured to the botto m surface of the base and having a central aperture extending therethrough and communicating with the aperture in the base;a center support mounted to the base and extending upwardly therefrom;a valve stem movably disposed relative to the base, the disc and the center support for movement from a first position where said valve stem seals said aperture through said disc and a second position where said valve stem opens said aperture in said disc; anda generally U-shaped spring-biased gate pivotally mounted to diametrically opposite positions on said base and biased toward the center support.