# US 11,307,032 B2 · Laser level

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- Number: US 11,307,032 B2
- Document ID: US11307032B2
- Status: Granted
- Kind: B2
- Application number: 16/710,417
- Filed: 2019-12-11
- Published: 2020-06-11
- Granted: 2022-04-19
- Earliest claimed: 2018-12-11
- Assignees: Zhejiang Rongsheng Tools Co., Ltd
- Applicants: Zhejiang Rongsheng Tools Co., Ltd
- Inventors: Zhiwei Zhuang; Jianrong Qian
- Web page: https://patentgrep.com/patent/US11307032B2

## CPC

- G01C 15/004: {Reference lines, planes or sectors}
- G01C 15/008: {combined with inclination sensor}
- G01C: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F; radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effects, propagation time, of radio waves, analogous arrangements using other waves G01S)

## Abstract

A laser level is provided. The laser level has a housing and a laser inside the housing. The laser level also has a laser fixing plate and a front cover plate. The laser is disposed in a mounting slot of the laser fixing plate. A sliding block is disposed in a space formed between the laser fixing plate and the front cover plate. A minus-shaped laser beam splitter and a cross-shaped laser beam splitter are disposed on the sliding block in a vertical direction. Both sides of the sliding block are further respectively provided with a sliding block pusher disposed in a way of passing through two sides of the housing. The sliding block pushers can move the sliding block in the vertical direction. The laser level can achieve positional exchange between the minus-shaped laser beam splitter and the cross-shaped laser beam splitter.

## Claims

### Claim 1

A laser level comprising:
a housing;
a laser disposed inside the housing and being configured to direct a light beam in a first direction;
a laser fixing plate;
a front cover plate comprising a light-through hole aligned with the laser in the first direction, the laser fixing plate and the front cover plate being disposed in sequence in the first direction; and
a sliding block disposed between the laser fixing plate, the front cover plate and the housing and comprising a minus-shaped laser beam splitter and a cross-shaped laser beam splitter, the sliding block being linearly slidable relative to the laser in a second direction transverse to the first direction between at least a first position and a second position, the minus-shaped laser beam splitter being aligned with the light-through hole when the sliding block is in the first position, the cross-shaped beam splitter being aligned with the light-through hole when the sliding block is in the second position, the sliding block comprising a sliding block pusher extending through a corresponding side wall opening of the housing in a third direction transverse to the first and second directions and translatable relative to the sidewall opening of the housing in the second direction between the at least the first position and the second position to linearly slide the sliding block between at least the first position and the second position.

### Claim 2 (depends on 1)

The laser level according to claim 1, wherein the laser fixing plate is further provided with a positioning steel ball and a compression spring for positioning the sliding block.

### Claim 3 (depends on 2)

The laser level according to claim 2, wherein:
the sliding block comprises a first positioning groove corresponding to the first position and a second positioning groove corresponding to the second position, the first and second positioning grooves being configured to accommodate the positioning steel ball; and
the positioning steel ball, when accommodated in one of the first and second positioning grooves, is configured to inhibit the linear sliding of the sliding block in the second direction.

### Claim 4 (depends on 1)

The laser level according to claim 1, wherein a laser switch is further disposed at the top of the housing.

### Claim 5 (depends on 1)

The laser level according to claim 1, wherein the top of the housing is further provided with a horizontal bubble seat and a turning bubble seat for positioning the laser level.

### Claim 6 (depends on 5)

The laser level according to claim 5, wherein the top of the housing is further provided with a bubble lamp switch.

### Claim 7 (depends on 1)

The laser level according to claim 1, wherein the bottom of the housing is further provided with a magnet for fixing the housing.