# US 10,306,832 B2 · Blade pin and associated cutting element

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,306,832 B2
- Document ID: US10306832B2
- Status: Granted
- Kind: B2
- Application number: 15/660,795
- Filed: 2017-07-26
- Published: 2019-01-31
- Granted: 2019-06-04
- Earliest claimed: 2017-07-26
- Assignees: Blount, Inc.
- Applicants: Blount, Inc.
- Inventors: Jason Carlson; Kurt Summers; Robert A. Dewey
- Web page: https://patentgrep.com/patent/US10306832B2

## CPC

- A01D 34/733: {Cutting-blade mounting means}
- A01D 34/736: {Flail type}
- B23Q 11/121: {with lubricating effect for reducing friction (F16C33/66 and F16H57/04 take precedence)}
- B26D 1/29: with cutting member mounted in the plane of a rotating disc, e.g. for slicing beans
- B26D 7/2614: {Means for mounting the cutting member}
- F16B 19/00: Bolts without screw-thread; Pins, including deformable elements (in screwed connections F16B29/00); Rivets (means for preventing withdrawal F16B21/00)
- F16N 21/00: Conduits; Junctions (in general F16L); Fittings for lubrication apertures
- A01D 34/64: mounted on a vehicle, e.g. a tractor, or drawn by an animal or a vehicle (A01D34/695 takes precedence)
- A01D 2101/00: Lawn-mowers
- A01D: HARVESTING; MOWING
- B23Q: DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING (tools of the kind used in lathes or boring machines B23B27/00); MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B26D: CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING (for growing crops or plants A01D, A01G; for fodder or straw A01F; for bulk butter A01J; for dough A21C; slaughtering A22B; for tobacco, cigars or cigarettes A24; marking-out, perforating or making buttonholes A41H25/00; manufacturing footwear A43D; brushmaking A46D; surgery A61B; disintegrating, mincing or shredding in general B02C; cutting wire, making pins or nails B21F, B21G; of the kind used formetal B23; cutting by abrasive fluid jets B24C5/02; hand-held cutting tools B26B; perforating, cutting-out, stamping-out or punching, or severing by means other than cutting B26F; for wood B27; for stone B28D; working of plastics or substances in a plastic state B29; making boxes, cartons, envelopes or bags, of paper or similarly worked materials, e.g. metal foil, B31B; article or web delivery apparatus incorporating cutting or line-perforating devices B65H35/00; for leather or upholstery B68, C14B; for glass C03B; making matches C06F; for peat C10F; for sugar C13B45/00; for textile materials D06H; civil engineering, building, mining, see Section E; for light guides G02B6/25; cutting processed photographic material G03D15/04)
- F16B: DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING (couplings for transmitting rotation F16D)
- F16N: LUBRICATING

## Abstract

Apparatuses associated with cutting elements are disclosed herein. In embodiments, a blade pin may include a head and a main body. The main body may extend from the head of the blade pin, and may include a cavity. The main body may further include a first aperture, wherein the first aperture is connected to the cavity. The main body may further include a second aperture formed in a sidewall, wherein the sidewall extends from the first end to the second end of the main body, and wherein the second aperture is connected to the cavity. The blade pin may include a valve, wherein the valve allows passage of a lubricant into the cavity through the first aperture and prevents passage of the lubricant out of the cavity through the first aperture. Other embodiments may be described and/or claimed.

## Claims

### Claim 1

A cutting element, comprising:
a crossbar that includes:
an aperture that extends from a first side of the crossbar to a second side of the crossbar; and
an inner wall that abuts the aperture and extends from the first side of the crossbar to the second side of the crossbar along the aperture, wherein a groove is formed in the inner wall between the first side of the crossbar and the second side of the crossbar, and wherein the groove is configured to disperse a lubricant within the aperture;
a blade coupled to the crossbar; and
a blade pin that couples the blade to the crossbar and extends through the aperture of the crossbar, wherein the blade pin includes:
a cavity formed within the blade pin;
a first aperture formed in an end of the blade pin, wherein the first aperture is connected to the cavity;
a second aperture formed in a sidewall of the blade pin, wherein the second aperture is connected to the cavity, wherein the sidewall abuts the inner wall, and wherein the second aperture is aligned with the groove of the crossbar; and
a valve located at the first aperture, wherein the valve allows passage of the lubricant into the cavity through the first aperture and prevents passage of the lubricant out of the cavity through the first aperture.

### Claim 2 (depends on 1)

The cutting element of claim 1, wherein the blade includes an aperture formed through the blade, wherein the aperture of the blade is aligned with the aperture of the crossbar, and wherein the blade pin extends through the aperture of the blade.

### Claim 3 (depends on 1)

The cutting element of claim 1, wherein the first aperture is located at a first end of the cavity and the second aperture is located at a second end of the cavity opposite to the first end of the cavity.

### Claim 4 (depends on 1)

The cutting element of claim 1, wherein the blade pin further includes a groove formed in the sidewall of the blade pin, wherein the second aperture is formed in the groove of the blade pin, and wherein the groove of the blade pin is aligned with the groove of the crossbar.

### Claim 5 (depends on 1)

The cutting element of claim 1, wherein the blade pin further includes a third aperture formed in the sidewall, wherein the third aperture is located opposite to the second aperture, wherein the third aperture is connected to the cavity, and wherein the third aperture is aligned with the groove of the crossbar.

### Claim 6 (depends on 1)

The cutting element of claim 1, wherein the valve is a first valve, wherein the blade pin further includes a second valve located at the second aperture, and wherein the second valve allows passage of the lubricant out of the cavity through the second aperture and prevents passage of the lubricant into the cavity through the second aperture.

### Claim 7 (depends on 1)

The cutting element of claim 1, wherein the groove of the crossbar extends around an entirety of a circumference of the inner wall.

### Claim 8

A mowing apparatus, comprising:
a cutting element that includes:
a crossbar that includes:
an aperture that extends from a first side of the crossbar to a second side of the crossbar; and
an inner wall that abuts the aperture and extends from the first side of the crossbar to the second side of the crossbar along the aperture, wherein a groove is formed in the inner wall between the first side of the crossbar and the second side of the crossbar, and wherein the groove is configured to disperse a lubricant within the aperture; and
a blade pin that couples a blade to the crossbar within the cutting element and extends through the aperture of the crossbar, wherein the blade pin includes:
a cavity formed within the blade pin;
a first aperture formed in an end of the blade pin, and wherein the first aperture is connected to the cavity;
a second aperture formed in a sidewall of the blade pin and configured to allow the lubricant to pass through the second aperture into the groove of the crossbar, wherein the sidewall abuts the inner wall, wherein the second aperture is connected to the cavity, and wherein the second aperture is aligned with the groove of the crossbar; and
a valve located at the first aperture, wherein the valve allows passage of the lubricant into the cavity through the first aperture and prevents passage of the lubricant out of the cavity through the first aperture.

### Claim 9 (depends on 8)

The mowing apparatus of claim 8, wherein the cutting element further includes a frame coupled to the crossbar, the frame configured to rotate about a center of the frame, and wherein the blade extends outside of a circumference of the frame when the frame rotates about the center of the frame.

### Claim 10 (depends on 8)

The mowing apparatus of claim 8, wherein the blade pin includes a groove formed in the sidewall of the blade pin, wherein the second aperture is formed in the groove of the blade pin, and wherein the groove of the blade pin is aligned with the groove of the crossbar.

### Claim 11 (depends on 8)

The mowing apparatus of claim 8, wherein the blade pin further includes a third aperture formed in the sidewall, wherein the third aperture is located opposite to the second aperture, wherein the third aperture is connected to the cavity, and wherein the third aperture is aligned with the groove of the crossbar.