# US 4,391,461 A · Quarter-turn fastener

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- Number: US 4,391,461 A
- Document ID: US4391461A
- Status: Granted
- Kind: A
- Application number: 06/197,438
- Filed: 1980-10-16
- Granted: 1983-07-05
- Earliest claimed: 1980-10-16
- Assignees: Tektronix, Inc.
- Inventors: Florian C. Deibele
- Web page: https://patentgrep.com/patent/US4391461A

## CPC

- E05C 3/041: {rotating about an axis perpendicular to the surface on which the fastener is mounted}
- Y10S 292/38: Plastic latch parts
- Y10T 292/1085: Friction catch
- E05C: BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS (latching means for sideboard or tailgate structures for vehicles B62D, {B62D33/02}; fastening devices for constructional or engineering elements E04, F16B; locks, fastening devices structurally or operatively combined or having significant cooperation with locks E05B; means for operating or controlling wing fasteners in conjunction with mechanisms for moving the wing E05F)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A one-piece molded plastic quarter-turn fastener is provided for releasably latching a panel to a cabinet. A generally disc-like body has a flanged and slotted stem axially extending therefrom to be snapped into a hole in the panel. Projecting radially from the body is a latching lip for engaging and disengaging a cabinet. A positioning boss is provided to permit a quarter-turn rotation of the fastener with a detent provided at each rotational limit.

## Claims

### Claim 1

A fastener for releasably latching a panel to a cabinet, comprising:
a generally disc-like one-piece body;
means integrally formed with said body for rotatably mounting said body to said panel;
a lip integrally formed with said body and extending radially therefrom, said lip being rotatable into latching engagement with said cabinet; and
a positioning boss integrally formed with said body, said positioning boss comprising a projection engagable with a detent in said panel for establishing a stable position of said fastener.

### Claim 2 (depends on 1)

A fastener in accordance with claim 1 wherein said means for rotatably mounting said body to said panel comprises a stem extending axially from said body and having means thereon for retaining said fastener in said panel.

### Claim 3 (depends on 2)

A fastener in accordance with claim 2 wherein said stem has a longitudinal slot and said retaining means comprise radially extending flanges contraposed on opposite sides of said slot.

### Claim 4 (depends on 3)

A fastener in accordance with claim 3 wherein said stem extends from a cavity formed in said body.

### Claim 5 (depends on 1)

A fastener in accordance with claim 1 wherein said body, mounting means, and lip comprise a unitary structure molded of plastic.