# US 8,739,843 B2 · Multi-functional and modular tree removal and maintenance apparatus and related methods > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,739,843 B2 - Document ID: US8739843B2 - Status: Granted - Kind: B2 - Application number: 13/608,837 - Filed: 2012-09-10 - Published: 2013-03-14 - Granted: 2014-06-03 - Earliest claimed: 2010-03-11 - Assignees: Partners In Innovation Limited, LLC - Applicants: John Helmsderfer; Stuart McDowell; Florin Ababei; Alex Androski - Inventors: John Helmsderfer; Stuart McDowell; Florin Ababei; Alex Androski - Web page: https://patentgrep.com/patent/US8739843B2 ## CPC - A01G 23/06: Uprooting or pulling up trees; Extracting or eliminating stumps - A01G 23/067: {by comminuting the tree stumps} - A01G: HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING (picking of fruits, vegetables, hops or the like A01D46/00; propagating unicellular algae C12N1/12) ## Abstract A lifting apparatus is provided. The apparatus includes a primary body that has a support for supporting a person, and a secondary body. A releasable coupling provides selective coupling between the primary and secondary bodies. The lifting apparatus has (a) a first condition in which the primary body is coupled to the secondary body, and (b) a second condition in which the primary body is not coupled to the secondary body, and is configured to be releasably coupled to a vehicle. ## Claims ### Claim 1 An apparatus for handling wood products, comprising: a frame configured to be supported at least in part by a ground surface; an anvil surface supported by the frame above a ground surface; and a rotatable drum carried by the frame and configured for (1) operating with the anvil surface in a first mode for chipping or grinding loose tree parts, and for (2) operating in a second mode for grinding a stump in the ground, the rotatable drum being selectively movable with respect to at least one of the ground surface or the frame between a first position wherein the drum is positioned away from the ground so the ground does not obstruct rotation of the drum and proximate to the anvil surface to cooperate with the anvil surface to chip or grind the loose tree parts in the first mode, and a second position wherein the drum is positioned adjacent the ground to engage a stump and grind the stump in the second mode; a feed roller assembly positioned upstream of the rotatable drum and proximate the anvil surface and including a feed roller housing and a feed roller in the housing, the feed roller configured to rotatably engage loose tree parts received by the housing and move the loose tree parts through the housing and toward the drum and anvil surface in the first mode for chipping the loose tree parts; and a shroud configured to encase at least a portion of the drum the shroud including a first shroud section selectively moveable to expose a first portion of the drum in the first mode and expose a second portion of the drum different from the first portion in the second mode. ### Claim 2 (depends on 1) The apparatus of claim 1, further comprising: an engine operatively coupled to the drum and configured to rotate the drum in at least a first direction. ### Claim 3 (depends on 2) The apparatus of claim 2, further comprising: an engagement mechanism operatively coupled with the drum and configured to selectively rotate the drum using the engine. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the drum is movable with respect to the frame, the apparatus further comprising: at least one pivot arm having one end pivotally coupled with the frame and a second end coupled with the drum, wherein rotation of the pivot arm moves the drum between the first and second positions. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein the drum includes at least one blade adapted to cooperate with the anvil surface to chip the loose tree parts when the drum is in the first position. ### Claim 6 (depends on 5) The apparatus of claim 5, further comprising: an attachment member adapted to be removably coupled to the drum and including a plurality of teeth different from the at least one blade and configured for grinding the stump when the drum is in the second position. ### Claim 7 (depends on 6) The apparatus of claim 6, wherein at least a portion of the teeth is positioned radially outward of the at least one blade when the attachment member is coupled to the drum. ### Claim 8 (depends on 1) The apparatus of claim 1, wherein the drum includes a plurality of teeth adapted to grind one of the loose tree parts or the stump. ### Claim 9 (depends on 8) The apparatus of claim 8, further comprising: an attachment member adapted to be removably coupled to the drum and including at least one blade different from the plurality of teeth and configured to cooperate with the anvil surface to chip the loose tree parts when the drum is in the first position. ### Claim 10 (depends on 9) The apparatus of claim 9, wherein the at least one blade is positioned radially outward of the teeth when the attachment member is coupled to the drum. ### Claim 11 (depends on 1) The apparatus of claim 1, further comprising: a feed roller control arm coupled to the feed roller and configured to guide the movement of the feed roller. ### Claim 12 (depends on 1) The apparatus of claim 1, wherein the feed roller housing includes a first feed chute, and a second feed housing adjacent the first feed chute and adjacent the drum. ### Claim 13 (depends on 12) The apparatus of claim 12, wherein the first feed chute and the second feed housing are coupled to the frame so as not to move with movement of the drum. ### Claim 14 (depends on 12) The apparatus of claim 12, wherein the second feed housing is movable relative to the first feed chute such that the first feed chute does not interfere with the movement of the second feed housing. ### Claim 15 (depends on 12) The apparatus of claim 12, wherein the first feed chute is coupled to the frame and the second feed housing moves with movement of the drum. ### Claim 16 (depends on 12) The apparatus of claim 12, wherein a gap is formed between the first feed chute and the second feed housing. ### Claim 17 (depends on 12) The apparatus of claim 12, wherein the first feed chute has a first confronting end with a first shape and the second feed housing has a second confronting end with a second shape, wherein the first and second shapes correspond to each other. ### Claim 18 (depends on 12) The apparatus of claim 12, wherein the first feed chute and the second feed housing move with movement of the drum. ### Claim 19 (depends on 1) The apparatus of claim 1, wherein the first shroud section is further selectively moveable to cover the first portion and the second portion in a non-operative mode.