Apparatus for producing consecutive connections between the interiors of glass lamp bulbs and sources of pressurized gas and/or vacuum

Patent 4666416 Issued on May 19, 1987. Estimated Expiration Date:

November 20, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

1708756

2247513

2575756

2730280

2764799

3178241

3796475

Inventor

Vollmer, Lothar

Application

No. 06/799908 filed on 11/20/1985

US Classes:

445/73, Having evacuation or degasification means or means to introduce gas, vapor, liquid or solid treating agent445/71With turret means

Examiners

Primary: Rowan, Kurt

Attorney, Agent or Firm

Hamilton, Brook, Smith & Reynolds

International Class

H01J 9/38 (20060101)

Foreign Application Priority Data

1984-11-20 DE

Abstract

The invention resides in apparatus for producing consecutive connections between the interiors (10) of glass lamp bulbs (12) and sources (14) of pressurized gas and/or vacuum (16, 17). The sequence of connecting is governed by the requirements of lamp bulb manufacturing. The pressure sources and/or vacuum sources are connected with channels (50, 52) in a stationary lower slide (38) of a slide system containing an upper slide (36) rotatable in engagement with the lower slide. Disposed in the upper slide are passageways (30, 32, 42, 43) to which the interiors of glass lamp bulbs are connected. Dependent on the position of rotation, the orifices of passageways (30, 32, 42, 43, 50, 52) in the upper and lower slides are aligned at least one of the two slides is provided with a face (60) engaging the other slide. The face is formed from a disc of a ceramic material which is highly resistant to wear and has a low coefficient of friction.