Rotary shafts – gudgeons – housings – and flexible couplings for ro – Coupling facilitates relative axial motion between coupled... – Coupling between rotary drive table and axially movable...
Reexamination Certificate
2006-02-07
2006-02-07
Cottingham, John R. (Department: 2116)
Rotary shafts, gudgeons, housings, and flexible couplings for ro
Coupling facilitates relative axial motion between coupled...
Coupling between rotary drive table and axially movable...
C175S321000
Reexamination Certificate
active
06994628
ABSTRACT:
A locking swivel apparatus is provided. The locking swivel includes an upper body portion having a counter bore about a cylindrical axis and a mandrel receivable in the counter bore. The apparatus further includes a locking arrangement, including at least one replaceable gear member, disposed to engage with the upper body portion and the mandrel. The locking arrangement is further disposed to selectively couple and decouple the upper body portion and the mandrel, such selective coupling and decoupling disposed to correspondingly constrain and allow relative rotation of the upper body portion and the mandrel about the cylindrical axis. Embodiments of the locking swivel include two replaceable gears disposed to selectively engage and disengage one another.
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Bowen Power Swivels, date unknown, source unknown.
“Boyd's Mechanical Locking Swivel” brochure, Boyd's Rental Tools.
Boyd's Bit Service, Inc., d/b/a Boyd's Rental Tools, advertising material prepared for Baker/Atlas Canada, Jul. 1999.
Boyd's Bit Service, Inc., d/b/a Boyd's Rental Tools general purpose advertising material, Jul. 1999.
Boyd's Bit Service, Inc., d/b/a Boyd's Rental Tools general purpose advertising material (details), Jul. 1999.
Boyd's Bit Service Inc.
Cottingham John R.
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