US 6,018,841 AGranted

Finishing trowel including handle

AssigneeMarshalltownTrowel Company

InventorsCurtis Dwight Kelsay, Duane Walker Woltjen, Kent Douglas Williams

Life of this patent

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Abstract

A finishing trowel comprised of a blade, a mounting and a handle, wherein the handle is hollow and has a square mounting hole for receiving a square mounting surface. A plastic handle is comprised of a durable inner core material and a grippable outer member. The handle's inner core includes deformable ribs which axially line the mounting hole and provide a secure, lash-free fit onto the mounting surface over a broader range of manufacturing tolerances for the parts. The handle also includes an endcap which cuts into and seals the endcap against an outer grippable material upon tightening of a flanged nut onto the mounting. A lip extends from the handle and encompasses a portion of the mounting to facilitate increased torque transfer from the handle to the mounting and blade. The replaceable handle can also be formed of other grippable materials such as wood.

Claims12

Dependent claims

A trowel comprising:

a blade having a top surface and a bottom surface;
a mounting affixed to the top surface of said blade, said mounting comprising a post extending upwardly from said top surface, said post including a tang extending laterally for a predetermined extent from said post, said tang having a proximal section shaped so as to define four edges;
a handle secured to said tang, said handle having an outer surface, said handle including a core member formed of a plastic material and a grip member secured to said core member, said grip member forming a first portion of said outer surface of said handle and said core member forming a second portion of said outer surface of said handle, said second portion disposed adjacent said post, said core member being hollow along the longitudinal axis of said handle for receiving the majority of the extent of said tang within the hollow, said hollow of said handle defined by an inner surface formed in said core, said inner surface constricted in the area adjacent said proximal section of said tang and engaging said four edges for providing supporting contact to said proximal section of said tang, so as to counteract lateral torquing forces on said handle.

Dependencies are inferred from the claim text.

Facts

Application: 09/017,183Filed 2 Feb 1998 · continuation
Priority: 2 Mar 1993
Granted: 1 Feb 2000
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

B25G 1/10
Handle constructions: characterised by material or shape
B25G 1/102
Characterised by material or shape: the shape being specially adapted to facilitate handling or improve grip
B25G 3/08
Socket, tang, or like fixings: with dovetail or other groove
B25G 3/32
Locking and securing devices: in association with, or including, tang, bolt, or other member passing axially through whole length of handle

Family

Serial025,622Parent of this continuation-in-part · filed 2 Mar 1993
Serial352,321Parent of this continuation · filed 8 Dec 1994
Serial659,085Parent of this continuation · filed 3 Jun 1996
US 5,713,096 AParent of this continuation
US 5,522,111 AParent of this continuation
US 5,327,612 AParent of this continuation-in-part
US 6,018,841 AThis patent

From the US filing history. Foreign family members aren’t listed.