Joints and connections – Articulated members – Lockable at fixed position
Patent
1985-09-30
1990-05-29
Cherry, Johnny D.
Joints and connections
Articulated members
Lockable at fixed position
15144A, 294 191, 294 535, B25G 106, B25G 338
Patent
active
049291122
ABSTRACT:
A new tool handle is disclosed that permits a wiping blade, brush, or similar tool to be positioned in a variety of angular positions. The device utilizes a spline, set in a block to rotate the tool carrying wrist. The spline is locked into place by a pin which is slidably positioned within the block. The handle of the device is used to engage the pin. The handle is provided with threads which engage similar threads in the block. As the handle is screwed into the block, it engages the pin and pushes it upwards against the spline, thereby locking the tool carrying wrist in place. The angle can be changed by simply backing out the handle until the pin drops, thereby releasing the spline, which can then be rotated into a new position and again locked into place. The device also utilizes a blade mounting plate which attaches to the tool carrying wrist. The working tools are attached to this plate. The plate is fastened to the wrist by a bolt, nut and nylon washer. The washer allows the blade mounting plate to rotate without losing tension on the bolt. This arrangement prevents the plate from working loose when the blade is being turned.
REFERENCES:
patent: Re12769 (1908-03-01), Palmer
patent: 2794265 (1957-06-01), Kruger
patent: 3778860 (1973-12-01), Thielen
patent: 4127296 (1978-11-01), Thomson
patent: 4353142 (1982-10-01), Nishiyama et al.
Cherry Johnny D.
Tavella Michael J.
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