Garbage storage device

Patent No. US6883676 (titled "Garbage storage device") on Jul 26, 2002. The application was issued on Apr 26, 2005.

What is this patent about?

’676 is related to the field of waste management hardware, specifically the mechanical assemblies used to control the motion of a container lid. In traditional foot-pedal bins, the kinetic energy generated by the lid falling under its own weight often results in a loud, disruptive impact against the bin rim. The background context involves improving the user experience by integrating a deceleration mechanism into the existing lever-action framework that connects the foot pedal to the lid hinge.

The underlying idea behind ’676 is the integration of a telescoping spring-loaded damper directly into the pivot point where the horizontal foot-lever meets the vertical lifting rod. Rather than placing a buffer at the lid hinge or the pedal itself, the invention utilizes a dual-cylinder housing that encapsulates a spring, creating a modular resistance unit. This unit acts as a shock absorber that compresses and expands in sync with the linkage movement, utilizing mechanical resistance to counteract the gravitational pull on the lid during closure.

The claims of ’676 focus on a specific structural arrangement where a buffer is interposed between the bin base and the linkage assembly. The independent claims define a system comprising a first cylinder anchored to the base and a second cylinder connected to the junction of the two-part linkage. A compression spring is sandwiched between the closed ends of these two cylinders, which are designed to slide relative to one another, thereby providing a controlled resistance force that is applied directly to the lever system responsible for lid elevation.

In practice, the invention works by utilizing the displacement of the linkage to drive the telescoping action of the cylinders. When a user steps on the pedal, the linkage moves to lift the lid, and the buffer extends or compresses accordingly. When the pedal is released, the weight of the lid forces the linkage back down, but this motion is resisted by the internal spring and the sliding friction between the first and second cylinders. The design allows for the inclusion of a sealing ring and damping oil within the cylinder gap to further smooth the descent through fluid resistance.

This approach differs from prior solutions by moving the damping mechanism away from the lid hinge, where space is often limited and mechanical advantage is poor. By anchoring the buffer to the base and connecting it to the lever junction, the invention applies braking force at a high-torque point in the mechanical chain. This configuration not only reduces noise more effectively but also simplifies the construction by using the telescoping cylinders as both a housing for the spring and a structural guide for the linkage motion.

How does this patent fit in bigger picture?

Technical Landscape

In the early 2000s when ’676 was filed, waste management receptacles were typically implemented using mechanical foot-pedal assemblies that relied on direct-linkage systems to translate vertical force into lid rotation. At a time when these systems commonly relied on gravity-driven closure rather than controlled deceleration, hardware constraints made the management of kinetic energy during the closing cycle non-trivial. Engineering solutions for lid-closure noise were often absent or relied on simple contact pads, as the integration of dedicated damping components within the internal linkage architecture was not a standard design practice for consumer-grade refuse containers.

Prosecution Position

The disclosed invention represents a technical advancement through the integration of a dedicated damping buffer directly into the mechanical linkage between the foot pedal and the lid. By utilizing a nested cylinder architecture containing a spring-loaded mechanism, the system shifts from a simple rigid-linkage assembly to a controlled-motion architecture. This structural solution enables the absorption of mechanical energy during the transition from an open to a closed state, overcoming the technical constraint of impact noise and mechanical stress caused by uncontrolled lid descent. The specific arrangement of the buffer between the base and the linkage provides a stabilized deceleration effect that is mechanically decoupled from the external lid surface.

Claims

This patent contains 16 claims, with claims 1 and 9 serving as the independent claims. The independent claims focus on a garbage storage device featuring a pedal-operated lid controlled by a two-lever linkage system and a spring-loaded buffer mechanism consisting of telescoping cylinders positioned between the base and the linkage. The dependent claims serve to specify the mechanical configuration of the buffer, including the use of O-rings for sliding engagement, specific mounting structures such as ears and bosses on the base, and the structural connection points between the cylinders and the lever assembly.

Key Claim Terms New

Definitions of key terms used in the patent claims.

Term (Source)Support for SpecificationInterpretation
Buffer
(Claim 1, Claim 9)
The buffer is arranged between the base and the linkage to ensure the garbage storage device makes little noise when moved from an open position to a closed position. It may include a spring connected between the base and the linkage, a first cylinder connected to the base, and a second cylinder connected to the linkage. One of the first and second cylinders may be partially inserted in the other one of the first and second cylinders.A noise-reduction assembly positioned between the base and the linkage that utilizes a spring and telescoping cylinders to dampen the movement of the lid.
First cylinder
(Claim 1, Claim 9)
The buffer may further include a first cylinder including a closed end connected with the base and an open end through which the spring is inserted. The first cylinder may include an ear formed at the closed end and mounted on the ears of the base. The first cylinder may be partially inserted in the second cylinder.A housing component of the buffer having a closed end attached to the base and an open end for receiving a spring.
First lever
(Claim 1, Claim 9)
The linkage includes a first lever and a second lever, where the first lever is pivotally mounted on the base. The first lever includes a first end in contact with the pedal and a second end. The first end of the second lever is connected with the second end of the first lever.A component of the linkage pivotally mounted relative to the bin that translates force from the pedal to the second lever.
Second cylinder
(Claim 1, Claim 9)
The buffer includes a second cylinder including an open end through which the spring is inserted and a closed end connected with the linkage. The second cylinder may include a tube transversely extending from the closed end for receiving the first end of the second lever. One of the first and second cylinders may be partially inserted in the other.A housing component of the buffer having a closed end attached to the linkage and an open end for receiving a spring, configured to move relative to the first cylinder.
Second lever
(Claim 1, Claim 9)
The second lever includes a first end connected with the second end of the first lever and a second end connected with the lid. Specifically, the second end of the first lever defines an aperture for receiving the first end of the second lever. The pedal can be stepped on in order to lift the lid through the linkage.A component of the linkage that connects the first lever to the lid to facilitate opening and closing.

Litigation Cases New

US Latest litigation cases involving this patent.

Case NumberFiling DateTitle
4:25-cv-00503May 22, 2025Simplehuman Llc V. Hms Manufacturing Company Llc

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US6883676

Application Number
US10206703A
Filing Date
Jul 26, 2002
Publication Date
Apr 26, 2005
External Links
Slate, USPTO , Google Patents