Personal blender blade assembly with a raised guard collar
A removable blade module for personal blenders that includes a collar to screw into a cup and a taller annular guard that encircles the collar and the cup wall when assembled. It is intended for single-serve blending cups that attach to a motor base and aims to shield the exposed blade edges when the cup is in place or removed. Typical users are owners of personal blending systems or countertop blender manufacturers and accessory makers.
(57) What the patent covered
The main independent claim covered a blade assembly having a removable base portion with a rotatable drive shaft and fixed blades, a collar that couples the container to the blade assembly, and a guard member that extends higher than the collar and circumscribes the collar and a portion of the container around the blade’s rotation axis. The guard therefore surrounds the blades and the adjacent cup wall when the container is attached.
Distinguishing feature: A guard that is taller than the coupling collar and sized so it circumscribes both the blade and the container wall when the cup is mounted.
Novelty 3/5. Personal blending cups with screw-in blade modules and safety interlocks were already common; the patent’s novelty is a physical, annular guard geometry that surrounds the collar and cup wall rather than relying solely on electrical interlocks.
Manufacturing
Injection-molded plastic base and guard, turned or stamped steel or machined drive shaft and blades, ultrasonic or mechanical assembly with gasket sealing, fastened or crimped blade-to-shaft joint.
Materials: Stamped stainless or hardened steel blades, injection-molded thermoplastic base/guard (e.g. nylon, PBT), stainless steel drive shaft, elastomeric gasket (silicone).
Manufacturability 4/5. Several common parts (molded body, stamped or machined blades and shaft, gasket) and straightforward assembly; requires molding tooling and metal stamping or light machining but no specialty electronics.
Market demand
No demand check has been run for this patent. Likely search terms: personal blender blade assembly guard, travel blender replacement blade cup collar, portable blender blade guard. The links in the sidebar open these searches.
Buyers: Owners of personal or portable blenders, replacement-parts sellers, aftermarket accessory makers.
Before manufacturing
No related continuation or divisional patents in force were found. Design patents, trademarks and unrelated patents may still cover the product.
Compatibility with existing cup threads and motor drives; certification and sealing for food safety and motor coupling are the main commercial hurdles.
About 1.5% of lapsed patents are later revived by their owners. This page is a research lead, not legal advice. Obtain a freedom-to-operate opinion before manufacturing.