Low-Profile Throw Lever With Detent Positions for Magnification Rings

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Solution Overview

Problem

Conventional throw levers for magnification rings on optical sights are bulky due to hinges or springs, leading to snagging issues and incompatibility across different optical sights, necessitating the use of different levers for each sight.

Innovation Solution

A low-profile throw lever device with a base member and pivotally attached lever member, featuring a detent assembly that allows for fixed positions, enabling compatibility across various optical sights and minimizing bulk.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a traditional throw lever with hinge or spring is used, then the lever can be flipped up and down, but the lever becomes bulky and larger in size

Engineering Contradiction:
Improvelever flipabilityVSAvoidlever size
Core Design Contradiction:
Ease of operationVSVolume of moving object

Solution Approach 1:

The patent removes the hinge and spring mechanisms from the throw lever design, extracting the problematic components that caused bulkiness. The lever is simplified to a basic pivoting mechanism that achieves the desired functionality without the bulky components, directly resolving the contradiction between flipability and size.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of using a hinge to allow the lever to flip up and down, the patent inverts the approach by using a simple pivot point on the magnification ring that allows the lever to rotate between a stored position against the ring and an operational position extending outward. This inversion eliminates the need for bulky hinge mechanisms while maintaining the flipable characteristic.

Inventive Principle:
Principle #13The other way round (Inversion)

2Device complexity

If a traditional throw lever with fixed configuration is used, then the lever structure is simple, but the lever cannot be universally used across different optical sights

Engineering Contradiction:
Improvelever structureVSAvoidlever compatibility
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent designs the throw lever with a universal mounting interface that can accommodate different magnification ring diameters. The lever incorporates adjustable features such as a movable mounting position or adjustable arm length that allow it to be adapted to various optical sight configurations, enabling a single lever design to serve multiple functions across different devices.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent introduces dynamic adjustability to the lever design, allowing the mounting position or effective length to be changed based on the specific optical sight being used. This dynamic characteristic enables the lever to adapt to different configurations while maintaining a relatively simple overall structure, resolving the contradiction between simplicity and versatility.

Inventive Principle:
Principle #15Dynamics

3Force

If a throw lever extends out from the optical sight, then the lever provides good leverage for adjustment, but the lever snags on clothing and gear outdoors

Engineering Contradiction:
Improveleverage for adjustmentVSAvoidsnagging
Core Design Contradiction:
ForceVSObject-affected harmful factors

Solution Approach 1:

The patent makes the lever dynamically repositionable, allowing it to be rotated between an operational position where it extends outward to provide leverage and a stored position where it is pulled back against the magnification ring. This dynamic positioning allows the lever to offer good leverage during use while minimizing snagging when not in use, resolving the contradiction between leverage and snagging resistance.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS20250283695A1Throw lever for a magnification ring of an optical sight
Publication Date: 2025.09.11 PRIMARY ARMS LLC
  • US20250283695A1 patent drawing
  • US20250283695A1 patent drawing
  • US20250283695A1 patent drawing

AI summary

The disclosure is related to a throw lever device for use with at least one magnification ring of at least one optical sight. The throw lever device includes a base member and a lever member pivotally attached to the base member. The lever member includes a detent assembly whereby the lever member may be held in multiple fixed positions about the base member including at least one fixed operable position for turning a magnification ring and at least one fixed non-operable position.