Safety belt webbing adjustor

• US 3,872,550 A
• Filed: 11/08/1973
• Issued: 03/25/1975
• Est. Priority Date: 11/08/1973
• Status: Expired due to Term

• Current Assignee: Elmer Chensheng Yang
• Original Assignee: Elmer Chensheng Yang
• Inventors: Yang, Elmer Chensheng
• Primary Examiner(s): Gelak, Bernard A.
• Application Number:
  US05/414,169
• Time in Patent Office: 502 Days
• Field of Search: 24/170,134EA,175E,191
• US Class Current: 24/170
• CPC Class Codes: A44B 11/14 with snap-action
• CPC Class Codes: Y10T 24/4016 Pivoted part or lever
• CPC Class Codes: Y10T 24/4072 Pivoted lever

Abstract

A device to adjust the length or tightness of webbing or belt material used for securing a person or an object in a designated space. The adjustor utilizes a stationary spool and a wedge member, which is in spring biased contact with the stationary spool. The wedge member is operated by a release tab. The webbing material is in contact with a substantial portion of the surface of the spool and is fed between the spool and the wedge member, which locks the webbing material securely on the spool.

Claims

1. A safety belt webbing adjustor comprising:

a frame member having two spaced, upwardly extending support flanges;

a cylindrical spool rigidly mounted between said support flanges for guiding the movement of said webbing through said frame member, the cylindrical surface of said spool being grooved to better grip the webbing;

a wedge member having a generally teardrop shaped cross section pivotally mounted between said flanges adjacent said spool;

an elongated coil spring concealed within said wedge member connected between the wedge member and the frame member for biasing said wedge membeR in contact with said spool to restrain the movement of said webbing in one direction, in a manner such that an increasing load on the webbing increases the wedging action;

a holding bar extending between said flanges adjacent said spool and positioned to insure that the webbing is held in contact with approximately 270* of the surface of the spool as it passes from the holding bar to the wedge member; and

a release tab attached to said wedge member centrally with respect to said frame flanges to pivot said wedge member away from said spool to allow movement of said webbing in said one direction.