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User-operated amusement apparatus for kicking the user's buttocks

An apparatus including a user-operated and controlled apparatus for self-infliction of repetitive blows to the user's buttocks by a plurality of elongated arms bearing flexible extensions that rotate under the user's control.

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US Patent 6637521 - Earth borer

US Patent Issued on October 28, 2003
Estimated Patent Expiration Date: Icon_subject July 11, 2021Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
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Abstract

An earth borer includes a thin-walled tubular shaft (4), a shank (2) provided at one end of the tubular shaft (4), and a drilling head (5) provided at another, opposite end of the tubular shaft, projecting radially beyond the tubular shaft (4), and having at least one cutter for breaking the bore core and (6, 6a, 6b, 6c, 6d) extending, at least partially, radially inward and at least one internal groove (7, 7a, 7b) associated with the at least one cutter, and a releasable tubular connection member (8) for drivingly connecting the shank (2) with tubular shaft (4) for joint rotation with each other.

Inventor

Assignee

Application

No. 09/902677 filed on 07/11/2001

US Classes:

175/19, BORING WITHOUT EARTH REMOVAL (I.E., COMPACTING EARTH FORMATION)175/320, WITH TOOL SHAFT DETAIL175/404, With core-breaking means408/204, Having axial, core-receiving central portion408/227Having peripherally spaced cutting edges

Field of Search

175/19, BORING WITHOUT EARTH REMOVAL (I.E., COMPACTING EARTH FORMATION)175/20, Combined with earth removal (e.g., removing sample)175/320, WITH TOOL SHAFT DETAIL175/403, Core forming type175/417, With internal-fluid passage175/421Symmetrical forked rotary type (e.g., fishtail)

Examiners

Primary: Bagnell, David
Assistant: Halford, Brian

Attorney, Agent or Firm

US Patent References

1657368, 4207954, Core bit having axial conical core breaker
Issued on: 06/17/1980
Inventor: Jerome
4657445, Core drill and method of removing a core therefrom
Issued on: 04/14/1987
Inventor: Bossler
5098234, Hollow drill for fabric and the like
Issued on: 03/24/1992
Inventor: Judkins, et al.
6102135, Portable core sampler
Issued on: 08/15/2000
Inventor: Shaw
6412575Coring bit and method for obtaining a material core sample
Issued on: 07/02/2002
Inventor: Harrigan, et al.

International Classes

E21B 17/046 (20060101)
E21B 17/02 (20060101)
E21B 11/00 (20060101)
E21B 10/02 (20060101)
E21B 10/00 (20060101)

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