Machine element or mechanism – Gearing – With brake means for gearing
Patent
1982-09-27
1985-10-29
Staab, Lawrence
Machine element or mechanism
Gearing
With brake means for gearing
74423, 292153, F16H 5710, F16H 114, F16H 120
Patent
active
045494444
ABSTRACT:
A locking gear drive for a protective roll-type shutter or awning device. The gear drive comprises, for example, a housing, a driveshaft coupled to a driving gear, a driven gear meshing with the driving gear and a driven shaft coupled to the driven gear. A socket is mounted at one end of a longitudinally displaceable driveshaft and the socket is slidably disposed within an end cap affixed to the gear drive housing. A plurality of pin-like projections, acting as locking members, are provided around the exterior periphery of the socket. A plurality of interlocking members for engaging the pin-like projections are provided in the form of bores disposed in an end wall of the end cap. A compression spring disposed around the driveshaft and between the gear drive housing and socket urges the locking members and interlocking members into engagement. Inter-engagement of the pin-like projections and bores holds the driveshaft against rotation. The driveshaft is freed for rotation by longitudinal displacement of the driveshaft against the compression spring, thereby disengaging the pin-like projections from the bores. To prevent an unauthorized person from operating the gear drive, a pivotable bar is affixed within the gear drive housing proximate an end of the driveshaft, preventing longitudinal displacement of the driveshaft when the pivotable bar is in a locked position. The pivotable bar is pivotable to an unlocked position away from the driveshaft by a rotatable shaft of a conventional key-lock assembly mounted in a side wall of the gear drive housing.
REFERENCES:
patent: 1147188 (1915-07-01), Rojas
patent: 1266332 (1918-05-01), Scroggins
patent: 1557058 (1925-10-01), Johansen
patent: 1858624 (1932-05-01), Hess et al.
patent: 2324571 (1943-07-01), Fitz
patent: 2503192 (1950-04-01), Cerf, Jr.
patent: 2621678 (1952-12-01), Snyder et al.
patent: 3141320 (1964-07-01), McConnell
patent: 4195867 (1980-04-01), Baillie
patent: 4294302 (1981-10-01), Ricke, Sr.
Bednarek Michael D.
Security Shutter Corp.
Staab Lawrence
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