Spherical Piston Retention in Hydraulic Motors

The patent merges the retaining function and sealing function into a single integrated spherical contact surface between the piston and cover. This eliminates the need for separate constraining means with multiple parts, reducing device complexity while maintaining sealing stability through the unified spherical interface that provides both retention and sealing capabilities.

The patent employs a spherical contact surface between the piston and cover instead of flat or complex geometric surfaces. This spherical interface naturally provides sealing action through its curvature, allowing the piston to be retained against the cover while maintaining reliable sealing contact during operation without requiring additional constraining components.

By combining the retaining and sealing functions into a single spherical contact surface, the patent reduces the number of parts that need to be assembled. This integration eliminates multiple assembly steps and reduces assembly time while maintaining sealing stability, directly improving productivity without sacrificing reliability.

The spherical contact surface is designed as a single integrated feature rather than multiple separate components. This segmentation approach, where one continuous spherical interface performs multiple functions, simplifies the assembly process and reduces production time while ensuring reliable sealing performance.

The spherical contact surface provides a simple yet effective sealing mechanism that is easy to manufacture and assemble. The curvature of the spherical surface naturally creates sealing contact between the piston and cover, ensuring reliable sealing stability while maintaining ease of manufacture and assembly without requiring complex constraining means.

The design employs a simple spherical contact surface that can be easily manufactured and assembled, prioritizing ease of manufacture and assembly. This simplified approach maintains sealing stability through the inherent sealing capabilities of the spherical interface, avoiding the need for complex and costly multi-part constraining means.

The spherical contact surface provides a cost-effective solution that maintains reliable sealed contact. The curvature of the sphere ensures consistent sealing pressure and contact between the piston and cover throughout the operational cycle, achieving both low production cost and high reliability without requiring complex constraining means.

The simplified spherical contact surface design reduces production costs while maintaining sealed contact reliability. The inherent geometric properties of the spherical interface provide consistent sealing performance without the need for expensive multi-part constraining means, achieving cost reduction without sacrificing reliability.