The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 24, 1984
Filed:
Jul. 06, 1981
Hugh K Schilling, St. Paul, MN (US);
Horton Industries, Inc., Minneapolis, MN (US);
Abstract
A fluid engaged and spring returned fan clutch for connection with a live rotative source of power including an annular mounting flange for connection with the source of power. The mounting flange terminates in a hub. Also included is an annular friction flange connected to the hub. A first outer shell section is rotatively mounted on the hub and connected to a second outer shell section with fan blades connected thereto. A circular face plate is connected to the second outer shell. A circular piston is axially and slideably mounted on and within the second outer shell section and axially of the face plate thereby forming a cylinder void between the piston and the face plate. A circular resilient bladder member is secured at its peripheral edge portion between the second outer shell section and the face plate with the bladder adjacent the piston and opposed to the face plate. The piston has a ring of friction material connected thereto. A series of spaced springs are mounted between the first outer shell section and the piston for urging the ring of friction material from the friction flange. Fluid pressure is introduced by means of a rotary air union into the cylinder void between the face plate and the bladder to cause the friction material ring to engage the friction flange to thereby rotate the first and second outer shell sections and the fan blades carried thereby against the action of the springs.