Pressure releasing closure for an oil reservoir
An oil reservoir and oil cap technology, which is applied in wood processing appliances, packaging, capping and other directions, can solve problems such as oil leakage, and achieve the effect of reducing the possibility of oil leakage
Inactive Publication Date: 2015-07-22
HUSQVARNA AB
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Problems solved by technology
Then, the pressure increase in the oil reservoir may exacerbate the problem of oil leaking through the oil pump due to temperature changes
Method used
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[0021] Some example embodiments now will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all example embodiments are shown. Indeed, the examples described and illustrated herein should not be construed as limiting the scope, applicability or configuration of the invention. Rather, these example embodiments are provided so that this invention will satisfy applicable legal and regulatory requirements. Like reference numerals denote like elements throughout. Also, as used herein, the term "or" is to be interpreted as a logical operator whose result is true whenever one or more of its operands are true. As used herein, operably coupled shall be understood to refer to a direct or indirect connection which, in either case, enables functionally interconnected components that are operatively coupled to each other.
[0022] Some example embodiments described herein provide an oil reservoir for a power tool designed to reduce oil...
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A chainsaw (100) includes a power unit, a bar (120), a chain (122) operably coupled to the bar (120) to rotate around the bar (120) responsive to drive power from the power unit, an oil pump operably coupled to the power unit to deliver oil to the chain (122), an oil reservoir (150, 300, 400) and a cap (152, 200, 420). The oil reservoir (300) is configured to hold oil for delivery from the oil pump to the chain (122) and includes a fill opening (310) having a substantially circular shaped orifice in a portion of the oil reservoir (150, 300, 400). The oil cap (152, 200, 420) is configured to be securable into the fill opening (310) responsive to engagement between the oil cap (152, 200, 420) and the fill opening (310). The fill opening (310) defines an axial sealing surface (330, 460) and a radial sealing surface (340, 450). The axial sealing surface (330, 460) defines a continuous surface extending around a periphery of the fill opening (310). The radial sealing surface (340, 450) includes at least one cutout portion (350) forming a discontinuity in the radial sealing surface (340, 450 relative to a shape of the fill opening (310).
Description
technical field [0001] Example embodiments generally relate to power equipment that lubricates working parts with oil, and more particularly, to an oil reservoir housing that, when secured, reduces pressure build-up in the oil reservoir. Background technique [0002] Typically, a chainsaw has an oil reservoir and an oil pump that draws oil from the reservoir to lubricate the chain. In many cases, the oil reservoir can be filled with oil via a fill hole, which is covered by an externally visible and removable cover. At the same time, the oil pump draws oil from the oil reservoir through the oil reservoir outlet. In many cases a hose may be provided to draw oil from the oil reservoir to the oil pump. An oil pump in a fuel powered chainsaw is driven off the clutch drum, possibly via a worm gear, supplying oil through a conduit connected to a portion of the chain bar and into a groove extending around the perimeter of the chain bar. In the context of an electric chainsaw, the...
Claims
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IPC IPC(8): B27B17/12
CPCB27B17/12B65D41/0407B65D51/1622
Inventor 约翰·霍伦多夫乔基姆·佩尔松约纳斯·英厄马松乔纳坦·古内尔
Owner HUSQVARNA AB