Trash can

Patent No. US9434538 (titled "Trash can") on Mar 14, 2011. The application was issued on Sep 6, 2016.

What is this patent about?

’538 is related to the field of waste receptacles, specifically step-actuated trashcans designed for residential or commercial use. The background context involves the need for durable, stable, and space-efficient containers that can be easily shipped and stored. Traditional pedal-operated trashcans often suffer from stability issues when the lid is forcefully opened and present logistical challenges during transport due to protruding foot pedals and fixed base components that prevent efficient nesting.

The underlying idea behind ’538 is the integration of a pivotable pedal protector that serves a dual purpose: providing a stabilizing footprint during use and folding away to facilitate compact nesting. By allowing the base stabilizer to rotate from a deployed position beneath the pedal to a stowed position against the underside of the body, the invention ensures the trashcan remains steady when the user steps on the pedal while simultaneously reducing the overall footprint for shipping. This mechanical flexibility is paired with a body geometry where all lower components, including the stowed stabilizer and pedal, fit within the upper periphery of the can.

The claims of ’538 focus on a trashcan assembly featuring a body with a specific bottom-end geometry and a pivotable stabilizer bar or pedal protector. The independent claims describe a mechanism where the protector moves between a first position adjacent to the pedal and a second position where it is stowed against an inclined or recessed portion of the body. Furthermore, the claims specify that in the stowed position, the stabilizer and the lid-actuating linkage are contained within the footprint of the upper opening, allowing one unit to be nested inside another for high-density stacking.

In practice, the invention utilizes a U-shaped stabilizer that acts as a physical stop and support. When deployed, the bar extends forward to prevent the can from tipping forward or the pedal from scraping the floor. A key engineering detail is the interaction between the pedal and the protector; the underside of the pedal features a transverse recess that accommodates the protector bar when the pedal is fully depressed, ensuring the mechanical stroke is not obstructed. When prepared for transport, the bar flips back and locks into a groove or against a stop wall, effectively disappearing into the body's profile.

This approach differentiates itself from prior art by replacing fixed, bulky bases with a dynamic stabilization system that does not sacrifice portability. While standard trashcans are often shipped in large, individual boxes due to their rigid pedals and bases, this design allows for deep nesting of multiple units. Additionally, the inclusion of a damping mechanism mounted to a high-strength platform ensures that the slow-close lid functionality remains robust even when the main body is constructed from lighter, more flexible plastics, balancing structural integrity with manufacturing efficiency.

How does this patent fit in bigger picture?

Technical Landscape

In the early 2010s when ’538 was filed, waste receptacle design was characterized by a transition toward integrated mechanical dampening at a time when lid motion was typically implemented using simple gravity-fed closures or basic spring-loaded hinges. Systems commonly relied on rigid, fixed-base architectures rather than modular or collapsible structural components, which often made the efficient nesting and high-density stacking of fully assembled pedal-actuated units non-trivial for logistics and storage. Furthermore, internal volume management was generally restricted to single-liner configurations, as hardware constraints in standard molded bodies lacked the integrated structural features necessary to securely partition the interior or anchor multiple independent liners simultaneously.

Prosecution Position

The disclosed invention achieves a technical advancement in receptacle utility and logistics through the integration of a pivotable pedal protector and a modular internal partitioning system. By utilizing a protector that pivots between a stabilizing position near the pedal and a retracted position, the architecture overcomes the technical constraint of fixed-footprint designs, enabling both operational stability and improved stackability for transport. The advancement is further realized through a structural solution involving internal divider holding components and notched body features that allow for the secure, multi-point anchoring of separate liners. This configuration enables a multi-cavity functional shift within a single receptacle body, providing a mechanical interface for waste segregation that maintains structural integrity through I-beam divider geometries.

Claims

This patent contains 35 total claims, with claims 1, 2, 15, and 20 serving as the independent claims. The independent claims focus on a trashcan assembly featuring a lid actuating system and a pivotable pedal protector or stabilizer bar configured to move between a deployed position for stability and a stowed position that facilitates stacking or protects the pedal mechanism. The dependent claims further define the structural geometry of the body and pedal recess, the specific orientation and locking engagement of the stabilizer in its stowed state, and additional features such as internal dividers, damping mechanisms, and bag-securing notches.

Key Claim Terms New

Definitions of key terms used in the patent claims.

Term (Source)Support for SpecificationInterpretation
Damping mechanism
(Claim 20)
Trashcans with rotary-type motion dampers for slowing the motion of the lids have become commercially available. These rotary dampening mechanisms are connected to the lids of the trashcans so as to slow the closing movement of the lids. The damping mechanism is configured to dampen movement of the lid in at least one of an opening and closing motion.A device, such as a rotary-type motion damper, connected to the lid or linkage system to slow the closing movement of the lid and prevent slamming.
Inclined portion
(Claim 1)
The bottom end comprises a horizontal portion, a vertical portion comprising a groove, and an inclined portion positioned rearward of the horizontal portion. The inclined portion is inclined relative to the horizontal portion and to the vertical portion. In the second position, another portion of the pedal protector rests against the inclined portion.A section of the trashcan's bottom end located rearward of the horizontal portion that serves as a resting surface for the pedal protector when in a stowed position.
Pedal protector
(Claim 1, Claim 2)
An aspect of at least one of the embodiments disclosed herein includes the realization that including a pivotable pedal protector can in some embodiments not only provide a stabilizing force to prevent the trash can from tipping over, but can also facilitate stacking of trashcans for shipping and/or storage. The pedal protector is pivotably coupled to the body and configured to pivot from a first position near the pedal to a second position away from the pedal.A pivotable structural component attached to the trashcan body that can be positioned near the foot pedal to provide stability or moved away to facilitate stacking and storage.
Stabilizer
(Claim 15)
The stabilizer is attached to the body and configured to pivot from a deployed position to a stowed position in a first direction and from the stowed position to the deployed position in a second direction. In the stowed position, the stabilizer is engaged with the bottom end of the body and extends away from the generally planar horizontal wall of the body at a non-zero acute angle. The leg of the stabilizer is engaged with the stop wall of the bottom end, thereby inhibiting further pivoting.A pivotable member comprising a leg and a lateral member that moves between a deployed position for stability and a stowed position where it engages a stop wall at an acute angle.
Stabilizer bar
(Claim 20)
The stabilizer bar is attached to the body and configured to pivot about an axis of rotation from a deployed position to a stowed position. A cross-member of the stabilizer bar is adjacent the front portion of the pedal in the deployed position and is adjacent the rear portion of the pedal in the stowed position. The axis of rotation is substantially co-planar with the substantially horizontal planar portion of the bottom wall of the body.A bar-shaped stabilizing component that pivots about an axis co-planar with the bottom wall, moving between a position adjacent the front of the pedal to a position adjacent the rear of the pedal.

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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US9434538

Application Number
US13047662A
Filing Date
Mar 14, 2011
Publication Date
Sep 6, 2016
External Links
Slate, USPTO , Google Patents