Fan grill construction
AssigneeLasko Holdings, Inc.
InventorsJames B. Perella, Rodney Wilson, Jr., Michael Cichetti, Charles Litvin
Life of this patent
Estimating the term…
Abstract
Improved fan grill/guard construction for fans for supplying air, where the fan has a front grill with an outer ring which wraps around and is dimensionally structured to improve airflow and to diffuse the air over a wide area.
Claims37
In combination with an oscillating fan, which fan has a rear grill, a front grill attached to said rear grill, a fan motor external to said rear grill, to which the rear grill is mounted, a fan blade assembly attached to and driven by said fan motor, the improvement comprising,
- said front grill having a plurality of ribs,
- said ribs being connected to a circumferential ring,
- said circumferential ring having a panel to which said ribs are connected,
- said circumferential ring dimensions are determined by a fan blade assembly diameter D, which dimensions include a dimension A, which is a distance from the tips of the fan blades to an inside diameter of said circumferential ring, a dimension B which is a depth of the ring, and a dimension C which is a width of the ring,
- said dimensions being in the range of a is plus or minus 40% of D, B equals 0.60 to 4.5 inches and C equals 40 to 200% of B.
A front grill for use with a fan having a motor and a blade assembly, said grill comprising:
- a circumferential ring at an outer periphery of said grill, said circumferential ring having:
- i) an inner diameter edge spaced away from a tip of said fan blade assembly by a dimension A, where A is less than about 40% of a diameter D of said fan blade,
- ii) a depth having a dimension B, and
- iii) a width having a dimension C,
- wherein said dimension B is between about 0.60 and 4.50 inches, said dimension C is between about 40% to 200% of dimension B, and said inside edge of said circumferential ring establishes a clearance from said fan blade tip by said dimension A.
A grill for use with a fan having a motor and a blade, said grill comprising:
- a circumferential ring at an outer periphery of said grill, said circumferential ring having:
- i) an inner diameter edge spaced away from a tip of said fan blade by a dimension A, where A is less than about 40% of a diameter D of said fan blade,
- ii) a depth having a dimension B, and
- iii) a width having a dimension C,
- wherein said dimension B is between about 0.60 and 4.50 inches, said dimension C is between about 40% to 200% of dimension B, and said inside edge of said circumferential ring establishes a clearance from said fan blade tip by said dimension A and wherein said grill provides a diffuse airflow from said fan.
A grill for use with a fan having a motor and a blade, said grill comprising:
- a circumferential ring at an outer periphery of said grill, said circumferential ring having:
- i) an inner diameter edge spaced away from a tip of said fan blade by a dimension A, where A is less than about 40% of a diameter D of said fan blade,
- ii) a depth having a dimension B, and
- iii) a width having a dimension C,
- wherein said dimension B is between about 0.60 and 4.50 inches, said dimension C is between about 40% to 200% of dimension B, and said inside edge of said circumferential ring overlays a portion of said fan blade by said dimension A.
A grill for use with a fan having a fan blade, said grill comprising:
- a circumferential ring at an outer periphery of said grill, said circumferential ring having:
- i) an inside edge spaced away from a tip of said fan blade by a dimension A, where A is less than about 40% of a diameter D of said fan blade, establishing a clearance between said fan blade tip and said inside edge of said circumferential ring,
- ii) a depth having a dimension B, and
- iii) a width having a dimension C,
- wherein said dimension B is between about 0.60 and 4.50 inches, and said dimension C is between about 40% to 200% of dimension B.
An oscillating fan having a rear grill, a front grill attached to said rear grill, a fan motor external to the rear grill, to which the rear grill is mounted, a fan blade assembly attached to and driven by said fan motor, the front grill comprising:
- a circumferential ring at an outer periphery of said front grill, said circumferential ring having:
- i) an inside edge spaced away from a tip of said fan blade assembly by about 0.170 inches, establishing a clearance between said fan blade tip and said inside edge of said circumferential ring,
- ii) a depth of about 1.41 inches, and
- iii) a width of about 0.95 inches,
- wherein said front grill provides a diffuse airflow from said fan.
Dependencies are inferred from the claim text.