# US 5,342,102 A · Latch assembly for sliding door

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- Number: US 5,342,102 A
- Document ID: US5342102A
- Status: Granted
- Kind: A
- Application number: 08/193,722
- Filed: 1994-02-09
- Granted: 1994-08-30
- Earliest claimed: 1992-05-29
- Assignees: Takigen Manufacturing Co. Ltd.
- Inventors: Kazuhide Takimoto
- Web page: https://patentgrep.com/patent/US5342102A

## CPC

- E05B 65/0835: {the bolts pivoting about an axis parallel to the wings}
- E05C 3/14: with operating handle or equivalent member rigid with the latch {(E05C3/122 takes precedence)}
- Y10S 292/46: Sliding door fasteners
- Y10T 292/0918: Rigid
- Y10T 292/0934: Rigid
- Y10T 292/1061: Rigid
- E05B: LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- 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 latch assembly for a sliding door, which comprises a casing having an L-shaped latch member including a finger application arm and a latch arm, the L-shaped latch member being pivoted by a transversal pivotal pin at the intersection of the finger application and latch arms, and a striker having a circular hole, the latch arm having a free end portion formed on the back surface thereof with a latch projection capable of being engaged in and disengaged from the circular hole of the striker, the L-shaped latch being rotationally biased in the latching direction by a torsion spring, the latch projection having a front edge face formed with an inclined cam face, the latch projection having a circular sectional profile having a smaller diameter than the diameter of the circular hole of the striker. The latch projection can be reliably engaged in and disengaged from the striker hole even if there is a slight deviation from the design position of securement between the striker and casing.

## Claims

### Claim 1

A latch assembly for a sliding door, comprising a casing secured to a sliding door, said casing including a pair of spaced-apart bearing walls connected together by a connecting wall and having an L-shaped latch member including a finger application arm and a latch arm pivoted by a transversal pivotal pin to said casing between said bearing walls at an intersection between the finger application arm and the latch arm; and a striker secured to a stationary frame and having a circular hole, said latch arm having a free end portion provided on the back side thereof with a latch projection capable of being engaged in and disengaged from said circular hole of said striker, said L-shaped latch member being rotationally biased in the latching direction by a torsion spring located between said bearing walls and around the pivotal pin, said latch projection being provided on a front edge face thereof with an inclined cam face for riding on said striker, said latch projection having a circular sectional profile having a smaller diameter than the diameter of said circular hole, whereby reliable engagement between said latch member and said striker can be achieved.

### Claim 2 (depends on 1)

The latch assembly according to claim 1, wherein said L-shaped latch member is arranged to approach said striker in the longitudinal direction relative to said L-shaped latch member and said striker.

### Claim 3 (depends on 1)

The latch assembly according to claim 1, wherein said striker is L-shaped and has a mounting wing, and said L-shaped latch member is arranged to approach said striker in a transversal direction relative to said striker.

### Claim 4 (depends on 1)

A latch assembly according to claim 1, wherein said casing includes dual mounting wings and is attached to said sliding door by utilizing a trim board located on the door back side.

### Claim 5 (depends on 1)

A latch assembly according to claim 1, wherein said casing connecting wall has a recess provided on the wall outer side, said recess containing a resilient cushioning means.