Patent No. US9434538 (titled "Trash can") on Mar 14, 2011. The application was issued on Sep 6, 2016.
’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.
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.
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.
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.
Definitions of key terms used in the patent claims.
US Latest litigation cases involving this patent.

The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
Get instant alerts for new documents