Door closer system

US11581830B2 · kind B2 · utility

Assignee

• Schlage Lock Company LLC · US

Inventors

• William P. Dye · Indianapolis, US
• Ian K. Heckman · Noblesville, US
• Yong Kwan Lacy · Carmel, US
• Brendon Allen · Gainesville, US
• Brian C. Eickhoff · Danville, US
• Ron Kielkowski · Noblesville, US
• Dale M. Collins · Colorado Springs, US
• David V. Toloday · Martinsville, US

Key dates

• Filing date: Mar 19, 2019
• Grant date: Feb 14, 2023
• Expiry date: Mar 19, 2039

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E05Y2900/132
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A door closer system is provided that includes a motor, a spring, a reduction gear set, and a rack and a pinion mechanism. The spring and pinion may be coupled to the rack, and the pinion may be selectively coupled to the gear set. The motor may be selectively mechanically coupled to the gear set. The pinion may rotate in a first direction via the rack as the spring is compressed in a second direction opposite the first direction as the spring is expanded. The motor is operable to rotate and act upon the pinion through the gear set, thereby rotating the pinion in the second direction and assist the spring in closing the door.