Using Jeff Moden's article http://www.sqlservercentral.com/articles/T-SQL/71550/ about Group Islands of Contiguous Dates as inspiration, you could do the following

;WITH cte AS (

SELECT name,

DATEADD(mm, - ROW_NUMBER() OVER (ORDER BY name, saledate), saledate) dategroup,

saledate

FROM #sales

WHERE quantity > 2

)

SELECT name, MIN(saledate) firstsaledate, COUNT(*) cnt

FROM cte

GROUP BY name, dategroup

ORDER BY name, dategroup