US 11,905,945 B2
Piston of air compressor
Wen-San Chou, Tainan (TW); and Cheng-Hsien Chou, Tainan (TW)
Filed by Wen-San Chou, Tainan (TW); and Cheng-Hsien Chou, Tainan (TW)
Filed on Mar. 30, 2022, as Appl. No. 17/709,033.
Claims priority of application No. 110113460 (TW), filed on Apr. 14, 2021.
Prior Publication US 2022/0333591 A1, Oct. 20, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. F04B 53/12 (2006.01); F04B 39/14 (2006.01); F04B 39/00 (2006.01); F04B 39/10 (2006.01); F04B 53/10 (2006.01); F04B 35/04 (2006.01)
CPC F04B 53/123 (2013.01) [F04B 39/0016 (2013.01); F04B 39/1073 (2013.01); F04B 39/14 (2013.01); F04B 53/1037 (2013.01); F04B 53/1085 (2013.01); F04B 35/04 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A piston of an air compressor, the piston being actuated by a motor to move upward and downward in a cylinder;
wherein the piston of the air compressor includes a head accommodating an air stop sheet, the air stop sheet includes a first bending section which is a boundary line of an acting zone and a positioning zone of the air stop sheet so that an obtuse angle less than 180 degrees is formed between the acting zone and the positioning zone of the air stop sheet on a top surface of the air stop sheet, and an open angle θ1 is formed between a bottom surface of the acting zone of the air stop sheet and a top surface of the head of the piston, thus producing an air flowing space;
wherein the acting zone has a noncircular spacing groove configured to separate an external portion and a circular portion, a neck formed on a connection of the external portion and the circular portion, and a second bending section formed on the neck in a mechanical working manner, wherein the circular portion is configured to bend upward, such that an obtuse angle less than 180 degrees is formed between the circular portion and the external portion with respect to the second bending section, and wherein an acute angle θ2 is formed between the first bending section and the circular portion,
wherein when an entirety of the air compressor is completely not in operation, the open angle θ1 formed between the acting zone of the air stop sheet and the head of the piston and the acute angle θ2 formed between the first bending section and the circular portion allow an airflow to flow through the air flowing space.