Door and window frame spreader

Details Door and window frame spreader Door and window frame spreader

2000-02-17

2000-11-28

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Screw

254133A, B66F 308

Patent

active

061524247

ABSTRACT:
A screw device for imposing spreading forces on opposing surfaces, having a pin adjustable length and employing a rod member having a groove in the end for engaging the pin.

REFERENCES:
patent: 1227105 (1917-05-01), Barnes
patent: 1723970 (1929-08-01), Jauch
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patent: 2777660 (1957-01-01), Albrecht
patent: 2814459 (1957-11-01), Hyre
patent: 3229940 (1966-01-01), Kagels
patent: 4890818 (1990-01-01), Williams
patent: 5092504 (1992-03-01), Hannes
patent: 5114127 (1992-05-01), Everhart
patent: 5971362 (1999-10-01), Clark

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