Angle-adjustable joint for electric fans

• US 5,429,481 A
• Filed: 08/24/1994
• Issued: 07/04/1995
• Est. Priority Date: 08/24/1994
• Status: Expired due to Fees

• Current Assignee: Su-Liang Liu
• Original Assignee: Su-Liang Liu
• Inventors: Liu, Su-Liang
• Primary Examiner(s): Look, Edward K.
• Assistant Examiner(s): VERDIER, CHRISTOPHER M
• Application Number:
  US08/294,031
• Time in Patent Office: 314 Days
• Field of Search: 416/246, 416/247 R, 416/244, 416/100, 415/126, 415/213.1, 415/214.1, 403/92, 403/93, 403/94, 403/97, 248/130, 248/284, 248/291
• US Class Current: 416/246
• CPC Class Codes: F04D 29/601 specially adapted for elastic fluid pumps
• CPC Class Codes: F16C 11/045 with at least a pair of arms pivoting relatively to at least one other arm, all arms being mounted on one pin crank-pins F16C11/02
• CPC Class Codes: F16C 11/10 Arrangements for locking
• CPC Class Codes: Y10T 403/32336 Engaging notch or recess in outer periphery of component
• CPC Class Codes: Y10T 403/32368 including radial interengaging tongue and slot or serrations

Abstract

An angle-adjustable joint including an upright stand having a substantially U-shaped mounting frame at the top, a fan support pivotally connected to the U-shaped mounting frame by a screw bolt and a nut, and a lock retained in a vertical groove on the U-shaped mounting frame and engaged with a tooth portion in an annular recess at one side of the fan support to lock the fan support in any of a series of angular positions, wherein the lock has a hooked portion on a projecting rod thereof inserted through a transeverse through hole on the fan support and hooked on a retaining flange at an opposite side of the fan support.

Claims

1. An angle-adjustable joint of the type comprising an upright stand having a substantially U-shaped mounting frame at the top, said U-shaped mounting comprising two opposite vertical walls, two through holes aligned on said vertical walls, and two vertical grooves respectively made on said vertical walls at an inner side through the length;

a fan support for supporting an electric fan on said upright stand, said fan support having an axle housing at the bottom pivotally connected between the through holes on said upright stand by a screw bolt and a nut, an annular recess at one side around said axle housing, a toothed portion within said annular recess;

a lock mounted around said axle housing and received within said annular recess for locking said fan support in position, said lock comprising a toothed portion releasably engaged with the toothed portion on said fan support, and a locking block extended out of said annular recess and retained in one vertical groove of said upright mounting frame of said upright stand to stop said lock and said fan support from rotary motion relative to said upright stand;

wherein said fan support comprises a transverse through hole spaced in parallel between the toothed portion and axle housing of said fan support, and a retaining flange at one end of said axle housing opposite to said lock;

said lock comprises a projecting rod having a hooked portion inserted through the transverse through hole on said fan support and hooked on the retaining flange of said axle housing.