Bolt fastener

Details Bolt fastener Bolt fastener

1998-06-24

1999-08-24

Wilson, Neill

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Internally threaded fastener element, e.g., nut, etc.

Multipart

411437, 411512, 411908, F16B 3708, F16B 3716

Patent

active

059416700

ABSTRACT:
A bolt fastener (1) is attachable to a bolt (23) by pressing the base (3) onto the bolt to receive the bolt in a receiving hole (2) of the base (3), while the fastener (1) has an increased pulling resistance force (pulling load) against a pulling force of the fastener from the bolt. An inner wall (9) of the bolt receiving hole (2) is provided with a pair of opposed engagement means (10) member into engagement with a threaded portion of the bolt as the received in the bolt receiving hole (2). Each of the engagement means (10) comprises a plurality of resilient arms (15,17) extending from the inner wall (9) of the bolt receiving hole (21) toward the center of the hole and a plate-like engagement portion (18) supported by the resilient arms to extend longitudinally with respect to the bolt receiving hole. Each of the opposed surfaces of the engagement portions (18) of the paired engagement means (10) is formed with a plurality of multi-stepped engagement pawls (19) arranged longitudinally with respect to the bolt receiving hole (2) for engagement with threaded portion of the bolt (23).

REFERENCES:
patent: 4828444 (1989-05-01), Oshida
patent: 4990044 (1991-02-01), Kimak
patent: 5302070 (1994-04-01), Kameyama et al.
patent: 5660513 (1997-08-01), Shibanushi

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