Bathtub stopper

• US 4,007,500 A
• Filed: 05/27/1976
• Issued: 02/15/1977
• Est. Priority Date: 05/27/1976
• Status: Expired due to Term

• Current Assignee: Emco Groep
• Original Assignee: Emco Groep
• Inventors: Thompson, Arthur D., Kaibara, Imao
• Primary Examiner(s): Smith, Robert I.
• Application Number:
  US05/690,715
• Time in Patent Office: 264 Days
• Field of Search: 4/287, 4/295, 4/286, 137/315, 251/254, 251/227, 251/58, 251/251, 251/229
• US Class Current: 4/295
• CPC Class Codes: A47K 1/14 Stoppers for wash-basins, baths, sinks, or the like
• CPC Class Codes: F16K 31/52408 comprising a lift valve
• CPC Class Codes: F16K 31/58 comprising a movable discharge-nozzle
• CPC Class Codes: Y10T 137/6106 Screw type

Abstract

A bathtub stopper for closing the drain passage of a strainer cup of a bathtub according to the present invention consists of a main body portion which has first and second components adapted to telescope longitudinally with respect to one another between an extended position and a shortened position. The components are also rotatable with respect to one another about the longitudinal axis of the main body. The first component is manually engageable to be rotatably driven about the longitudinal axis and the second component is adapted to be secured to a strainer to locate the main body in an operative position with respect to the strainer. A closure means is carried by the first component for closing the drain passage when the main body is in the shortened position, the closure means being spaced from the strainer to open the drain passage when in the extended position. A continuous cam track means extends circumferentially of one of the components and includes crest and valley portions which are longitudinally and circumferentially spaced from one another. Cam follower means on the other of the components engages the cam track means whereby, upon rotation of one component with respect to the other, the cam follower means is guided along the cam track to locate the components in the shortened position when in engagement with the crest of the cam track and in an extended position when in engagement with a valley of the cam track.

Claims

1. A bathtub stopper for closing the drain passage of a strainer cup of a bathtub comprising:

a. a main body consisting of first and second components adapted to telescope longitudinally with respect to one another between an extended position and a shortened position, said components also being rotatable with respect to one another about a longitudinal axis of said main body, said first component being manually engageable to be rotatably driven about said longitudinal axis, said second component being adapted to be secured to a strainer to locate said main body in an operative position with respect to a strainer,

b. closure means carried by said first component for closing said drain passage when said main body is in said shortened position, said closure means being spaced from said strainer to open said drain passage when in said extended position,

c. continuous cam track means extending circumferentially of one of said components, said cam track means including crest and valley positions which are longitudinally and circumferentially spaced from one another,

d. cam follower means on the other of said components engaging said cam track whereby upon rotation of one component with respect to the other, the cam follower is guided along the cam track to locate said components in said shortened position when in engagement with a crest of said cam track and in said extended position when in engagement with a valley of said cam track.

2. A bathtub stopper as claimed in claim 1, including first recess means in said cam track for engagement with said cam follower means to releasably interlock said first and second components whereby said main body may be rotated as a unit to be mounted in said strainer cup.

3. A bathtub stopper as claimed in claim 1, including second recess means in said cam track to releasably lock said components in said shortened position.

4. A bathtub stopper as claimed in claim 2, including second recess means in said cam track to releasably lock said components in said shortened position.

5. A bathtub stopper as claimed in claim 1, wherein said cam track has two crests arranged diametrically opposite one another and two valleys arranged diametrically opposite one another, and said cam follower means includes two cam followers arranged diametrically opposite one another.

6. A bathtub stopper as claimed in claim 5, wherein said crests and valleys of said cam track are circumferentially spaced 90°

from one another.