A liquid discharge apparatus includes a carriage (1), a liquid discharge head (300, 300C, 300K, 300M, 300Y, 300S, 300W) having a discharge port (P1, P2), a first driver (92), and a second driver (93). The carriage is movable along at least one of a first axis (X) and a second axis (Y) intersecting the first axis. The liquid discharge head is held by the carriage and discharges a liquid from the discharge port toward an object (100) in a direction along a third axis (Z) intersecting the first axis and the second axis. The first driver moves the carriage along the third axis. The second driver moves the liquid discharge head along the third axis relative to the carriage.

A sprinkler head protector and a sprinkler head protector and sprinkler head combination are described. A flexible nonwoven geotextile sprinkler head protector has an opening therein sized to allow said protector to be pulled by hand over a slightly larger outer dimension of a sprinkler head. Once installed, the outer portion of the sprinkler head protector is trapped under the outer edge of the sprinkler head. Among its several purposes, the sprinkler head protector blocks vegetation from overgrowing or growing into the sprinkler head, prevents or reduces vegetation growth in the immediate vicinity of the sprinkler head, provides physical support to the sprinkler head, helping it maintain its proper vertical alignment, and provides a physical barrier to stop sand and dirt from entering the interior of the sprinkler head.

A fluid applicator configured to receive a pressurized fluid includes a pressure vessel configured to receive the pressurized fluid from a fluid delivery line. The pressure vessel includes a valve chamber configured to receive a valve assembly, a filter chamber configured to receive a filter assembly, and a fluid delivery line fitting configured to be coupled to the fluid delivery line. The fluid applicator further including a tip assembly coupled to the pressure vessel and configured to atomize the pressurized fluid.

A protective cover for a fire protection sprinkler includes a pair of sidewalls and an orthogonal wall structure connected to an upper edge of each of the pair of sidewalls. The orthogonal wall structure including a slot therein that opens along an edge of the orthogonal wall structure in alignment with an opening between the pair of sidewalls. The slot including a pair of side edges including a pair of opposing arcuate regions adapted to engage a deflector mounting boss of a fire protection sprinkler. An arcuate sidewall extends from the orthogonal wall structure and an upper wall extending inward from an upper edge of the arcuate sidewall and opposing the orthogonal wall structure to define a cavity that is adapted for receiving a deflector of a fire protection sprinkler.

The present disclosure relates to a soot blower including: a lance tube which includes one end that reciprocally moves in one direction on a surface of an inlet port of a flow path of the tubular heat exchanger; a drive unit which is connected to the lance tube and reciprocally moves and rotates the lance tube in the one direction; a first nozzle which is connected to the one end of the lance tube and discharges steam to the inlet port; and a second nozzle which is disposed adjacent to the first nozzle and connected to the one end of the lance tube and discharges solid particles to the inlet port, and the present disclosure relates to a method of cleaning a tubular heat exchanger by using the soot blower.

A sprinkler guard for protection of a fire protection sprinkler to define one or more dimensional relationships between the guard and the sprinkler. The sprinkler guard includes a cage that defines an internal volume for housing operational components of the sprinkler including a fluid deflector and thermally responsive trigger. The sprinkler guard locates the deflector within the internal volume with an upper boundary of the cage spaced at a clearance distance from the fluid deflector and a lower boundary of the cage located between the deflector member and a fluid outlet of the sprinkler frame body. Affixed to the cage is a clamp assembly defining a hinged relationship for securing the sprinkler guard to the fire protection sprinkler and housing components of the sprinkler guard cage.

A sprinkler guard for protection of a fire protection sprinkler to define one or more dimensional relationships between the guard and the sprinkler. The sprinkler guard includes a cage that defines an internal volume for housing operational components of the sprinkler including a fluid deflector and thermally responsive trigger. The sprinkler guard locates the deflector within the internal volume with an upper boundary of the cage spaced at a clearance distance from the fluid deflector and a lower boundary of the cage located between the deflector member and a fluid outlet of the sprinkler frame body. Affixed to the cage is a clamp assembly defining a hinged relationship for securing the sprinkler guard to the fire protection sprinkler and housing components of the sprinkler guard cage.

Described herein is a bounce-reducing cover assembly that is positioned on the top of the cover and riser of a sprinkler to achieve a similar golf ball bounce characteristic as typical golf course turf. The cover assembly has a top surface that is composed of a plurality of vertical fingers or posts, which help achieve the desired bounce characteristics with a golf ball. Specifically, these fingers are flexible and provide some “give” so as to absorb some of the force from an incoming golf ball. Depending on the durometer of the material, size of the fingers, and spacing of the fingers, different bounce characteristics can be achieved.

Described herein is a bounce-reducing cover assembly that is positioned on the top of the cover and riser of a sprinkler to achieve a similar golf ball bounce characteristic as typical golf course turf. The cover assembly has a top surface that is composed of a plurality of vertical fingers or posts, which help achieve the desired bounce characteristics with a golf ball. Specifically, these fingers are flexible and provide some “give” so as to absorb some of the force from an incoming golf ball. Depending on the durometer of the material, size of the fingers, and spacing of the fingers, different bounce characteristics can be achieved.

At least one aspect is directed to a removable sprinkler protection device. The removable sprinkler protection device can include a foldable unitary member. The foldable unitary member can include a first portion having a first extension, a second extension, a third extension, or a fourth extension. The foldable unitary member can include a second portion having a fifth extension, a sixth extension, or a seventh extension. The fourth extension can be disposed at least partially between the first portion and the second portion. The seventh extension can include a tab. The first portion or the second portion can include an opening. The foldable unitary member can be made from at least partially of a biodegradable material.