Needle type inflation valve

• US 3,905,387 A
• Filed: 10/03/1974
• Issued: 09/16/1975
• Est. Priority Date: 10/03/1974
• Status: Expired due to Term

• Current Assignee: Munro M. Grant
• Original Assignee: Munro M. Grant
• Inventors: Grant, Munro M.
• Primary Examiner(s): Weakley, Harold W.
• Application Number:
  US05/511,597
• Time in Patent Office: 348 Days
• Field of Search: 137/223 46/9D 273/65D 128/349BV 220/DIG.19 5/348-350,348WD
• US Class Current: 137/223
• CPC Class Codes: F16K 15/202 and with flexible valve member
• CPC Class Codes: Y10T 137/3584 Inflatable article [e.g., tire filling chuck and/or stem]

Abstract

There is disclosed herein a needle type inflation valve comprising a housing portion having a circumferential flange for securing the housing to a bladder and a frustoconical through opening which receives a valve core. The valve core is made of readily deformable material and has a relatively heavy flange on one end and a relatively thinner flange on the other. The end of the core having the thin flange is inserted into the housing at the larger end of the frustoconical through opening whereby the thin flange folds backwardly as the core is pushed through the opening and snaps outwardly beyond the smaller end of the opening.

Claims

1. A needle type inflation valve structure comprising a housing portion adapted to be secured to an inflatable article, said housing portion affording a through opening into the article;

a resilient valve core comprising a stem seated within said through opening, said stem being axially perforated to receive an inflation needle and having radially forward and rearward extending flanges at the ends, said flanges radially overlapping said housing portion;

said through opening having one end thereof substantially larger than the other end and at least a substantial portion of the axial dimension of said through opening having converging wall portions extending inwardly of said opening from said larger end;

said forward radiating flange on one end of said stem being substantially thin and foldable closely against the sides of said stem to allow said one end to be forcefully projected into said larger end of said through opening in one direction, said converging wall portions coacting with said forward flange and folding it back along said stem whereby the stem and forward flange can be projected outwardly of the other end of said through opening to seat said valve core in said through opening.

2. In an inflation valve as set forth in claim 1, at least a substantial portion of the axial dimension of said stem having wall portions converging in the same direction as and engaging said converging wall portions of said through opening.

3. In an inflation valve as set forth in claim 1, said stem having at least one integrally formed, radially projecting sealing ring compressed tightly against wall portions of said through opening.

4. In an inflation valve as set forth in claim 1, said one end of said stem and said forward flange having axially forwardly facing outer end surface portions which slope backwardly relative to said one direction of movement of said valve core whereby said thin flange tapers radially outwardly to a thin circumferential edge, said sloping end surface portions coacting with said converging wall portions of said through opening to fold said thin flange backwardly and facilitate the seating of said valve core in said through opening.

5. In an inflation valve as set forth in claim 1, said housing being made of a vinyl plastic of slight resilience;

said valve core being made of a relatively soft, readily deformable rubber.

6. A needle type inflation valve structure comprising a housing having a radially extending, circumferential flange adapted to be secured to an inflatable article, said housing affording a through opening into the article;

a resilient valve core comprising a stem seated within said through opening, said stem being axially perforated to receive an inflation needle and having radially extending forward and rearward flanges at forward and rearward ends thereof, respectively, said flanges radiaLly overlapping said housing adjacent to the ends of said through opening;

said through opening having one end thereof substantially larger than the other end and having a frustoconical tapering wall extending inwardly of said through opening from said larger end to said other end;

a substantial portion of the axial dimension of said stem being frustoconical and tapering forwardly from said rearward flange in the same direction as and engaging said tapering wall of said through opening;

said stem having integrally formed, radially projecting sealing rings disposed adjacent to the ends of said frustoconical portion of said stem and compressed tightly against said wall of said through opening;

said one end of said stem and said forward flange having axially forwardly facing outer end surface portions which are rounded and curve backwardly toward said rearward flange whereby when the valve core is inserted forward end first into said larger end of said through opening, said rounded surface portions coact with said converging wall portions of said through opening to fold said forward flange backwardly and facilitate the seating of said valve core in said through opening.