Vacuum pump

Patent metadata

Field	Value
Publication number	US-12385489-B2
Application number	US-202318131083-A
Country	US
Kind code	B2
Filing date	Apr 5, 2023
Priority date	Apr 5, 2022
Publication date	Aug 12, 2025
Grant date	Aug 12, 2025

Abstract

A vacuum pump, which is connectable to an external system and configured to evacuate material from the external system, includes a main housing defining a motor housing, a pump housing, and a partition wall that separates the motor housing and the pump housing. The pump housing is sealed relative to the motor housing to form a compression chamber that holds a lubrication fluid. The vacuum pump further includes a motor assembly that is positioned within the motor housing and a pump assembly that is positioned within the compression chamber. The pump assembly is driven by the motor assembly and is in fluid communication with the compression chamber. The pump assembly includes a pump chamber, a rotor having vanes that is driven within the pump chamber, and a seal that is in sliding contact with the rotor. The seal is moveable relative to the rotor.

First claim

What is claimed is:

1. A vacuum pump that is connectable to an external system and configured to evacuate material from the external system, the vacuum pump comprising:
a housing including a motor housing, a pump housing, and a trestle that separates the motor housing and the pump housing;
a base coupled to a lower portion of the housing;
a motor assembly that is positioned within the motor housing;
a control panel disposed on a first sidewall of the housing;
a battery that is coupled to the motor housing and configured to supply electrical current to the motor assembly;
a pump assembly that is positioned within the pump housing, the pump housing is sealed relative to the motor housing to form a compression chamber storing a lubrication fluid, wherein the pump assembly is driven by the motor assembly and is in fluid communication with the compression chamber;
an inlet manifold coupled to the trestle and configured to fluidly connect the pump assembly to the external system; and
a bumper composed of an elastomeric material and coupled to the trestle on a second sidewall of the housing that is opposite the first sidewall, the bumper is configured to protect the vacuum pump from damage when inadvertently dropped, and wherein the first sidewall and the second sidewall extend upward from the base.

2. The vacuum pump of claim 1 , further comprising an O-ring that is disposed on an outer periphery of the inlet manifold such that the inlet manifold is sealingly coupled to the trestle.

3. The vacuum pump of claim 1 , wherein the inlet manifold is fastened to the trestle using a plurality of threaded fasteners that are received within corresponding threaded bores of the trestle.

4. The vacuum pump of claim 1 , wherein the bumper includes a pair of T-ribs that are received within a pair of corresponding slots of the trestle, wherein the T-ribs retain the bumper to the trestle.

5. The vacuum pump of claim 4 , wherein the bumper includes a concave face from which the T-ribs project, wherein the concave face deforms and lays flat against the trestle as the T-ribs are received in the slots.

Assignees

• Milwaukee Electric Tool Corp

Inventors

• Miller Justin D
• Turakhiya Shrey M

Classifications

• F04C27/002

  of rigid material · CPC title

• F04C25/02

  for producing high vacuum (sealing arrangements F04C27/00; silencing F04C29/06) · CPC title

• F04C23/001

  of similar working principle · CPC title

• F04C18/3441 Primary

  the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation · CPC title

• F04C27/003 Primary

  of resilient material · CPC title