US 5,088,199 A · Variable vacuum attachment for hair grooming clippers

Abstract

A suction attachment for a hair grooming clipper includes a suction head having a vacuum relief port and a flexible sealing lid for covering the port. The relief port communicates between an internal air flow passage in the suction head and the exterior of the suction head. The sealing lid is movable by a user's finger to regulate the degree of relief of the vacuum provided by the port. The suction head has a flow constriction defined in the air flow passage midway between a front inlet and a rear outlet and proximate the location of the relief port such that regulation of vacuum relief occurs at the region of the passage where the air pressure is highest and air velocity is lowest. Also, a hollow tubular extension at one end can be inserted in the relief port when the port is completely open to prevent clogging of the open port by hair entering the port from the exterior of the suction head.

Claims12

Dependent claims

A vacuum attachment for a hair grooming clipper, comprising:

(a) a suction head having a body defining an internal air flow passage and an inlet to and outlet from said passage;
(b) a vacuum relief port defined through said suction head body intermediate between said inlet and outlet of said air flow passage for providing communication between said passage and the exterior of said suction head;
and
(c) a closure in the form of a flexible sealing lid attached to the exterior and disposed on the exterior of said body so as to overlie said relief port and being movable for varying the amount of area of said port closed by said closure and thereby regulating the degree of relief through said port of a vacuum condition within said internal passage of said suction head.

1 more element

A suction attachment for a hair grooming clipper, comprising:

(a) a suction head having an internal air flow passage defined by a top wall, a pair of side walls extending downward from opposite lateral edges of said top wall to define an inlet to said flow passage, and a rear wall extending downward from a rear edge of said top wall and between and interconnecting said side walls at rearward ends thereof to define an open bottom to said flow passage which is closed by installation of said suction head upon the hair grooming clipper, said rear wall having defined therein an outlet from said flow passage;
(b) a vacuum relief port defined through said top wall of said suction head intermediate between said inlet and outlet of said air flow passage for providing communication between said passage and the exterior of said suction head;
and
(c) a flexible sealing lid attached on the exterior of said top wall adjacent said port and being movable for varying the amount of area of said port closed by said lid and thereby regulating the degree of relief provided at said port of the vacuum condition applied through the suction head.

1 more element

Dependencies are inferred from the claim text.

Variable vacuum attachment for hair grooming clippers

Life of this patent

Variable vacuum attachment for hair grooming clippers

Life of this patent

Abstract

Claims12