David P Mcdaniel

US Patent:

7179179, Feb 20, 2007

Filed:

Apr 29, 2005

Appl. No.:

11/119194

Inventors:

David McDaniel - Marietta GA, US

International Classification:

A63B 69/00

US Classification:

473456, 473454, 473422, 273371

Abstract:

An air mattress has a resilient front panel, an opposed rear panel and at least one interior panel extending therebetween dividing the mattress into ball and strike chambers. A ball air valve attached to the rear panel at the ball chamber activates in response to a predetermined pressure increase in the chamber occurring in response to deflection of the front panel at the ball chamber. A strike air valve attached to the rear panel at the strike chamber activates in response to a predetermined pressure increase in the chamber occurring in response to deflection of the front panel at the strike chamber. Signaling devices alert when a strike or ball air valve activates informing a user whether a pitch is a ball or a strike.

US Patent:

44835647, Nov 20, 1984

Filed:

Aug 2, 1982

Appl. No.:

6/404364

Inventors:

David L. McDaniel - Cleveland OK

Assignee:

McDanco, Inc. - Tulsa OK

International Classification:

B66C 100

US Classification:

294 91

Abstract:

A fail-safe knock-off block for use during the repair or servicing of oil well surface pumping equipment involving a longitudinally slotted pipe capped at each end by top and bottom pipe segments which are held in place concentric to the slotted pipe by a resilient handle. An inner handle on the slotted pipe allows the concentric caps to be rotated axially from an open position to a closed position, thus encircling the polish rod. The weight of the sucker rod string on the end caps during use compresses the end caps and resilient handle thus locking the safety block such that it can neither open nor come off the well head.